QOJ.ac

QOJ

ID	题目	提交者	结果	用时	内存	语言	文件大小	提交时间	测评时间
#240565	#7686. The Phantom Menace	ucup-team159^#	AC ✓	1066ms	418684kb	C++23	10.9kb	2023-11-05 16:26:31	2023-11-09 16:03:42

Due to the privacy settings of the submitter, you are not allowed to view this code.

詳細信息

Test #1:

score: 100

Accepted

time: 0ms

memory: 3872kb

input:

2
3 3
abc
ghi
def
bcd
efg
hia
1 3
abc
def

output:

3 2 1 
2 3 1 
-1

result:

ok 2 cases (2 test cases)

Test #2:

score: 0

Accepted

time: 420ms

memory: 3712kb

input:

1000000
1 1
b
b
1 1
a
b
1 1
b
a
1 1
a
a
1 1
b
b
1 1
a
b
1 1
b
a
1 1
a
a
1 1
b
b
1 1
a
b
1 1
b
a
1 1
a
a
1 1
b
b
1 1
a
b
1 1
b
a
1 1
a
a
1 1
b
b
1 1
a
b
1 1
b
a
1 1
a
a
1 1
b
b
1 1
a
b
1 1
b
a
1 1
a
a
1 1
b
b
1 1
a
b
1 1
b
a
1 1
a
a
1 1
b
b
1 1
a
b
1 1
b
a
1 1
a
a
1 1
b
b
1 1
a
b
1 1
b
a
1 1
a
a
1 1
...

output:

result:

ok 1000000 cases (1000000 test cases)

Test #3:

score: 0

Accepted

time: 413ms

memory: 3668kb

input:

500000
1 2
dd
ba
1 2
cd
ba
1 2
bd
ba
1 2
ad
ba
1 2
dc
ba
1 2
cc
ba
1 2
bc
ba
1 2
ac
ba
1 2
db
ba
1 2
cb
ba
1 2
bb
ba
1 2
ab
ba
1 2
da
ba
1 2
ca
ba
1 2
ba
ba
1 2
aa
ba
1 2
dd
aa
1 2
cd
aa
1 2
bd
aa
1 2
ad
aa
1 2
dc
aa
1 2
cc
aa
1 2
bc
aa
1 2
ac
aa
1 2
db
aa
1 2
cb
aa
1 2
bb
aa
1 2
ab
aa
1 2
da
aa
1 2...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1 
1 
-1
-1
1 
1 
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1 
1 
1 
1 
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1 
1 
-1
-1
1 
1 
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1 
1 
-1
-1
-1
-1
-1
1 
1 
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1 
1 
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 500000 cases (500000 test cases)

Test #4:

score: 0

Accepted

time: 388ms

memory: 3708kb

input:

500000
2 1
d
d
b
a
2 1
c
d
b
a
2 1
b
d
b
a
2 1
a
d
b
a
2 1
d
c
b
a
2 1
c
c
b
a
2 1
b
c
b
a
2 1
a
c
b
a
2 1
d
b
b
a
2 1
c
b
b
a
2 1
b
b
b
a
2 1
a
b
b
a
2 1
d
a
b
a
2 1
c
a
b
a
2 1
b
a
b
a
2 1
a
a
b
a
2 1
d
d
a
a
2 1
c
d
a
a
2 1
b
d
a
a
2 1
a
d
a
a
2 1
d
c
a
a
2 1
c
c
a
a
2 1
b
c
a
a
2 1
a
c
a
a
2 1
d...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1 2 
2 1 
-1
-1
2 1 
2 1 
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1 2 
1 2 
1 2 
1 2 
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1 2 
1 2 
-1
-1
2 1 
1 2 
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1 2 
1 2 
-1
-1
-1
-1
-1
2 1 
1 2 
-1
-1
-1
-1
-1
-1
-1
-1
-...

result:

ok 500000 cases (500000 test cases)

Test #5:

score: 0

Accepted

time: 333ms

memory: 3728kb

input:

333333
1 3
cbb
bfa
1 3
bbb
bfa
1 3
abb
bfa
1 3
fab
bfa
1 3
eab
bfa
1 3
dab
bfa
1 3
cab
bfa
1 3
bab
bfa
1 3
aab
bfa
1 3
ffa
bfa
1 3
efa
bfa
1 3
dfa
bfa
1 3
cfa
bfa
1 3
bfa
bfa
1 3
afa
bfa
1 3
fea
bfa
1 3
eea
bfa
1 3
dea
bfa
1 3
cea
bfa
1 3
bea
bfa
1 3
aea
bfa
1 3
fda
bfa
1 3
eda
bfa
1 3
dda
bfa
1 3
c...

output:

-1
-1
-1
1 
1 
-1
-1
-1
-1
-1
-1
-1
-1
-1
1 
1 
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1 
1 
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 333333 cases (333333 test cases)

Test #6:

score: 0

Accepted

time: 350ms

memory: 3872kb

input:

333333
3 1
c
b
b
b
f
a
3 1
b
b
b
b
f
a
3 1
a
b
b
b
f
a
3 1
f
a
b
b
f
a
3 1
e
a
b
b
f
a
3 1
d
a
b
b
f
a
3 1
c
a
b
b
f
a
3 1
b
a
b
b
f
a
3 1
a
a
b
b
f
a
3 1
f
f
a
b
f
a
3 1
e
f
a
b
f
a
3 1
d
f
a
b
f
a
3 1
c
f
a
b
f
a
3 1
b
f
a
b
f
a
3 1
a
f
a
b
f
a
3 1
f
e
a
b
f
a
3 1
e
e
a
b
f
a
3 1
d
e
a
b
f
a
3 1
c...

output:

-1
-1
-1
2 3 1 
3 1 2 
-1
-1
-1
-1
-1
-1
-1
-1
-1
3 1 2 
3 1 2 
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
3 2 1 
3 1 2 
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1 2 3 
1 3 2 
-1
-1
-1
-1
-...

result:

ok 333333 cases (333333 test cases)

Test #7:

score: 0

Accepted

time: 303ms

memory: 3708kb

input:

250000
1 4
hbca
fhaa
1 4
gbca
fhaa
1 4
fbca
fhaa
1 4
ebca
fhaa
1 4
dbca
fhaa
1 4
cbca
fhaa
1 4
bbca
fhaa
1 4
abca
fhaa
1 4
haca
fhaa
1 4
gaca
fhaa
1 4
faca
fhaa
1 4
eaca
fhaa
1 4
daca
fhaa
1 4
caca
fhaa
1 4
baca
fhaa
1 4
aaca
fhaa
1 4
hhba
fhaa
1 4
ghba
fhaa
1 4
fhba
fhaa
1 4
ehba
fhaa
1 4
dhba
fhaa...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1 
1 
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 250000 cases (250000 test cases)

Test #8:

score: 0

Accepted

time: 344ms

memory: 3644kb

input:

250000
4 1
h
b
c
a
f
h
a
a
4 1
g
b
c
a
f
h
a
a
4 1
f
b
c
a
f
h
a
a
4 1
e
b
c
a
f
h
a
a
4 1
d
b
c
a
f
h
a
a
4 1
c
b
c
a
f
h
a
a
4 1
b
b
c
a
f
h
a
a
4 1
a
b
c
a
f
h
a
a
4 1
h
a
c
a
f
h
a
a
4 1
g
a
c
a
f
h
a
a
4 1
f
a
c
a
f
h
a
a
4 1
e
a
c
a
f
h
a
a
4 1
d
a
c
a
f
h
a
a
4 1
c
a
c
a
f
h
a
a
4 1
b
a
c
a
f...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
3 4 1 2 
3 4 1 2 
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 250000 cases (250000 test cases)

Test #9:

score: 0

Accepted

time: 274ms

memory: 3596kb

input:

200000
1 5
jjjjj
baaaa
1 5
ijjjj
baaaa
1 5
hjjjj
baaaa
1 5
gjjjj
baaaa
1 5
fjjjj
baaaa
1 5
ejjjj
baaaa
1 5
djjjj
baaaa
1 5
cjjjj
baaaa
1 5
bjjjj
baaaa
1 5
ajjjj
baaaa
1 5
jijjj
baaaa
1 5
iijjj
baaaa
1 5
hijjj
baaaa
1 5
gijjj
baaaa
1 5
fijjj
baaaa
1 5
eijjj
baaaa
1 5
dijjj
baaaa
1 5
cijjj
baaaa
1 5
b...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 200000 cases (200000 test cases)

Test #10:

score: 0

Accepted

time: 320ms

memory: 3732kb

input:

200000
5 1
j
j
j
j
j
b
a
a
a
a
5 1
i
j
j
j
j
b
a
a
a
a
5 1
h
j
j
j
j
b
a
a
a
a
5 1
g
j
j
j
j
b
a
a
a
a
5 1
f
j
j
j
j
b
a
a
a
a
5 1
e
j
j
j
j
b
a
a
a
a
5 1
d
j
j
j
j
b
a
a
a
a
5 1
c
j
j
j
j
b
a
a
a
a
5 1
b
j
j
j
j
b
a
a
a
a
5 1
a
j
j
j
j
b
a
a
a
a
5 1
j
i
j
j
j
b
a
a
a
a
5 1
i
i
j
j
j
b
a
a
a
a
5 1
h...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 200000 cases (200000 test cases)

Test #11:

score: 0

Accepted

time: 333ms

memory: 3872kb

input:

250000
2 2
hb
ca
fh
aa
2 2
gb
ca
fh
aa
2 2
fb
ca
fh
aa
2 2
eb
ca
fh
aa
2 2
db
ca
fh
aa
2 2
cb
ca
fh
aa
2 2
bb
ca
fh
aa
2 2
ab
ca
fh
aa
2 2
ha
ca
fh
aa
2 2
ga
ca
fh
aa
2 2
fa
ca
fh
aa
2 2
ea
ca
fh
aa
2 2
da
ca
fh
aa
2 2
ca
ca
fh
aa
2 2
ba
ca
fh
aa
2 2
aa
ca
fh
aa
2 2
hh
ba
fh
aa
2 2
gh
ba
fh
aa
2 2
f...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
2 1 
2 1 
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1...

result:

ok 250000 cases (250000 test cases)

Test #12:

score: 0

Accepted

time: 272ms

memory: 3668kb

input:

166666
2 3
jef
aia
aaa
aaa
2 3
ief
aia
aaa
aaa
2 3
hef
aia
aaa
aaa
2 3
gef
aia
aaa
aaa
2 3
fef
aia
aaa
aaa
2 3
eef
aia
aaa
aaa
2 3
def
aia
aaa
aaa
2 3
cef
aia
aaa
aaa
2 3
bef
aia
aaa
aaa
2 3
aef
aia
aaa
aaa
2 3
ldf
aia
aaa
aaa
2 3
kdf
aia
aaa
aaa
2 3
jdf
aia
aaa
aaa
2 3
idf
aia
aaa
aaa
2 3
hdf
aia
a...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 166666 cases (166666 test cases)

Test #13:

score: 0

Accepted

time: 302ms

memory: 3656kb

input:

166666
3 2
je
fa
ia
aa
aa
aa
3 2
ie
fa
ia
aa
aa
aa
3 2
he
fa
ia
aa
aa
aa
3 2
ge
fa
ia
aa
aa
aa
3 2
fe
fa
ia
aa
aa
aa
3 2
ee
fa
ia
aa
aa
aa
3 2
de
fa
ia
aa
aa
aa
3 2
ce
fa
ia
aa
aa
aa
3 2
be
fa
ia
aa
aa
aa
3 2
ae
fa
ia
aa
aa
aa
3 2
ld
fa
ia
aa
aa
aa
3 2
kd
fa
ia
aa
aa
aa
3 2
jd
fa
ia
aa
aa
aa
3 2
id
...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 166666 cases (166666 test cases)

Test #14:

score: 0

Accepted

time: 233ms

memory: 3732kb

input:

125000
2 4
heio
baaa
aaaa
aaaa
2 4
geio
baaa
aaaa
aaaa
2 4
feio
baaa
aaaa
aaaa
2 4
eeio
baaa
aaaa
aaaa
2 4
deio
baaa
aaaa
aaaa
2 4
ceio
baaa
aaaa
aaaa
2 4
beio
baaa
aaaa
aaaa
2 4
aeio
baaa
aaaa
aaaa
2 4
pdio
baaa
aaaa
aaaa
2 4
odio
baaa
aaaa
aaaa
2 4
ndio
baaa
aaaa
aaaa
2 4
mdio
baaa
aaaa
aaaa
2 4
l...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 125000 cases (125000 test cases)

Test #15:

score: 0

Accepted

time: 268ms

memory: 3652kb

input:

125000
4 2
he
io
ba
aa
aa
aa
aa
aa
4 2
ge
io
ba
aa
aa
aa
aa
aa
4 2
fe
io
ba
aa
aa
aa
aa
aa
4 2
ee
io
ba
aa
aa
aa
aa
aa
4 2
de
io
ba
aa
aa
aa
aa
aa
4 2
ce
io
ba
aa
aa
aa
aa
aa
4 2
be
io
ba
aa
aa
aa
aa
aa
4 2
ae
io
ba
aa
aa
aa
aa
aa
4 2
pd
io
ba
aa
aa
aa
aa
aa
4 2
od
io
ba
aa
aa
aa
aa
aa
4 2
nd
io
ba
...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 125000 cases (125000 test cases)

Test #16:

score: 0

Accepted

time: 218ms

memory: 3600kb

input:

100000
2 5
ttjma
aaaaa
aaaaa
aaaaa
2 5
stjma
aaaaa
aaaaa
aaaaa
2 5
rtjma
aaaaa
aaaaa
aaaaa
2 5
qtjma
aaaaa
aaaaa
aaaaa
2 5
ptjma
aaaaa
aaaaa
aaaaa
2 5
otjma
aaaaa
aaaaa
aaaaa
2 5
ntjma
aaaaa
aaaaa
aaaaa
2 5
mtjma
aaaaa
aaaaa
aaaaa
2 5
ltjma
aaaaa
aaaaa
aaaaa
2 5
ktjma
aaaaa
aaaaa
aaaaa
2 5
jtjma
aaa...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 100000 cases (100000 test cases)

Test #17:

score: 0

Accepted

time: 254ms

memory: 3716kb

input:

100000
5 2
tt
jm
aa
aa
aa
aa
aa
aa
aa
aa
5 2
st
jm
aa
aa
aa
aa
aa
aa
aa
aa
5 2
rt
jm
aa
aa
aa
aa
aa
aa
aa
aa
5 2
qt
jm
aa
aa
aa
aa
aa
aa
aa
aa
5 2
pt
jm
aa
aa
aa
aa
aa
aa
aa
aa
5 2
ot
jm
aa
aa
aa
aa
aa
aa
aa
aa
5 2
nt
jm
aa
aa
aa
aa
aa
aa
aa
aa
5 2
mt
jm
aa
aa
aa
aa
aa
aa
aa
aa
5 2
lt
jm
aa
aa
aa
aa...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 100000 cases (100000 test cases)

Test #18:

score: 0

Accepted

time: 231ms

memory: 3644kb

input:

111111
3 3
oqa
bba
aaa
aaa
aaa
aaa
3 3
nqa
bba
aaa
aaa
aaa
aaa
3 3
mqa
bba
aaa
aaa
aaa
aaa
3 3
lqa
bba
aaa
aaa
aaa
aaa
3 3
kqa
bba
aaa
aaa
aaa
aaa
3 3
jqa
bba
aaa
aaa
aaa
aaa
3 3
iqa
bba
aaa
aaa
aaa
aaa
3 3
hqa
bba
aaa
aaa
aaa
aaa
3 3
gqa
bba
aaa
aaa
aaa
aaa
3 3
fqa
bba
aaa
aaa
aaa
aaa
3 3
eqa
bba
a...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 111111 cases (111111 test cases)

Test #19:

score: 0

Accepted

time: 215ms

memory: 3612kb

input:

83333
3 4
eqag
aaaa
aaaa
aaaa
aaaa
aaaa
3 4
dqag
aaaa
aaaa
aaaa
aaaa
aaaa
3 4
cqag
aaaa
aaaa
aaaa
aaaa
aaaa
3 4
bqag
aaaa
aaaa
aaaa
aaaa
aaaa
3 4
aqag
aaaa
aaaa
aaaa
aaaa
aaaa
3 4
xpag
aaaa
aaaa
aaaa
aaaa
aaaa
3 4
wpag
aaaa
aaaa
aaaa
aaaa
aaaa
3 4
vpag
aaaa
aaaa
aaaa
aaaa
aaaa
3 4
upag
aaaa
aaaa
aaa...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 83333 cases (83333 test cases)

Test #20:

score: 0

Accepted

time: 223ms

memory: 3812kb

input:

83333
4 3
eqa
gaa
aaa
aaa
aaa
aaa
aaa
aaa
4 3
dqa
gaa
aaa
aaa
aaa
aaa
aaa
aaa
4 3
cqa
gaa
aaa
aaa
aaa
aaa
aaa
aaa
4 3
bqa
gaa
aaa
aaa
aaa
aaa
aaa
aaa
4 3
aqa
gaa
aaa
aaa
aaa
aaa
aaa
aaa
4 3
xpa
gaa
aaa
aaa
aaa
aaa
aaa
aaa
4 3
wpa
gaa
aaa
aaa
aaa
aaa
aaa
aaa
4 3
vpa
gaa
aaa
aaa
aaa
aaa
aaa
aaa
4 3
up...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 83333 cases (83333 test cases)

Test #21:

score: 0

Accepted

time: 197ms

memory: 3648kb

input:

66666
3 5
bquda
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
3 5
aquda
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
3 5
zpuda
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
3 5
ypuda
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
3 5
xpuda
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
3 5
wpuda
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
3 5
vpuda
aaaaa
aaaaa
aaaaa
aaaaa
aaaaa
3 5
upuda
aaaa...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 66666 cases (66666 test cases)

Test #22:

score: 0

Accepted

time: 210ms

memory: 3864kb

input:

66666
5 3
bqu
daa
aaa
aaa
aaa
aaa
aaa
aaa
aaa
aaa
5 3
aqu
daa
aaa
aaa
aaa
aaa
aaa
aaa
aaa
aaa
5 3
zpu
daa
aaa
aaa
aaa
aaa
aaa
aaa
aaa
aaa
5 3
ypu
daa
aaa
aaa
aaa
aaa
aaa
aaa
aaa
aaa
5 3
xpu
daa
aaa
aaa
aaa
aaa
aaa
aaa
aaa
aaa
5 3
wpu
daa
aaa
aaa
aaa
aaa
aaa
aaa
aaa
aaa
5 3
vpu
daa
aaa
aaa
aaa
aaa
aa...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 66666 cases (66666 test cases)

Test #23:

score: 0

Accepted

time: 147ms

memory: 3648kb

input:

20833
6 8
gvebaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
6 8
fvebaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
6 8
evebaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaa...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 20833 cases (20833 test cases)

Test #24:

score: 0

Accepted

time: 148ms

memory: 3652kb

input:

15873
9 7
mmxaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
9 7
lmxaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaaa
aaaaaa...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 15873 cases (15873 test cases)

Test #25:

score: 0

Accepted

time: 129ms

memory: 3620kb

input:

10000
10 10
puoaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
10 10
ouoaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaa...

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
...

result:

ok 10000 cases (10000 test cases)

Test #26:

score: 0

Accepted

time: 279ms

memory: 3828kb

input:

250000
2 2
od
ah
ha
do
2 2
il
ng
il
ng
2 2
cf
pf
pf
cf
2 2
wx
ll
wx
ll
2 2
fg
ge
ge
fg
2 2
dg
mj
dg
mj
2 2
rj
vw
wr
jv
2 2
er
pv
pv
er
2 2
kc
lb
cl
bk
2 2
dh
zc
hz
cd
2 2
qv
ce
eq
vc
2 2
lz
um
zu
ml
2 2
hw
xx
hw
xx
2 2
uk
un
ku
nu
2 2
sg
kx
gs
xk
2 2
ib
xw
ib
xw
2 2
ar
pd
pd
ar
2 2
ij
si
ii
js
2 2
p...

output:

result:

ok 250000 cases (250000 test cases)

Test #27:

score: 0

Accepted

time: 242ms

memory: 3820kb

input:

166666
2 3
aib
avi
aib
avi
2 3
btw
xjw
xjw
btw
2 3
dng
ouv
uvd
ngo
2 3
ctq
sve
sve
ctq
2 3
ott
obm
ott
obm
2 3
aly
tmx
aly
tmx
2 3
nhm
zar
arn
hmz
2 3
knr
qpa
nrq
pak
2 3
gsw
fyn
sng
ywf
2 3
qcy
rov
qcy
rov
2 3
nmj
tyx
tyx
nmj
2 3
dbu
pim
pim
dbu
2 3
afj
zwf
ffa
wjz
2 3
vgo
sky
gyv
kos
2 3
zru
bog
u...

output:

result:

ok 166666 cases (166666 test cases)

Test #28:

score: 0

Accepted

time: 271ms

memory: 3832kb

input:

166666
3 2
yx
pd
tl
dt
xy
lp
3 2
xb
pc
cr
xb
pc
cr
3 2
bw
bl
so
bw
bl
so
3 2
oq
eu
tx
eu
oq
tx
3 2
tk
ul
ep
le
kt
pu
3 2
ze
en
iq
qe
ei
nz
3 2
zn
vd
nz
nv
zn
dz
3 2
sn
aa
sl
aa
sn
sl
3 2
cn
lx
jn
cn
lx
jn
3 2
il
td
rf
rf
td
il
3 2
up
mr
ex
ru
xe
pm
3 2
pk
vn
pk
pk
vn
pk
3 2
ke
vj
cp
ke
cp
vj
3 2
aq
...

output:

result:

ok 166666 cases (166666 test cases)

Test #29:

score: 0

Accepted

time: 188ms

memory: 3712kb

input:

125000
8 1
b
j
r
k
f
e
h
g
f
g
h
e
r
j
b
k
8 1
v
d
t
w
h
h
k
o
w
v
d
h
k
h
o
t
8 1
s
u
k
a
a
v
i
d
a
d
v
u
s
a
k
i
8 1
j
l
p
m
z
o
s
f
z
o
f
l
m
p
s
j
8 1
h
v
s
i
j
d
a
w
d
i
j
s
w
a
h
v
8 1
a
h
a
e
b
w
m
l
e
l
a
m
a
h
w
b
8 1
q
f
y
l
s
m
d
c
c
f
d
q
y
l
s
m
8 1
q
c
o
k
n
a
v
w
k
q
v
n
c
a
o
w
8 1
f...

output:

1 6 5 8 7 2 4 3 
7 4 1 2 3 6 8 5 
2 5 6 7 8 3 1 4 
3 4 6 5 7 8 2 1 
4 5 8 7 3 1 2 6 
1 6 2 8 7 5 4 3 
8 1 2 4 6 3 7 5 
3 8 4 5 2 6 7 1 
7 6 1 4 5 3 2 8 
6 1 7 2 3 4 8 5 
1 3 5 4 2 8 7 6 
3 5 8 1 6 2 4 7 
8 7 2 4 6 1 5 3 
1 3 2 6 8 4 7 5 
6 2 4 5 3 1 7 8 
6 5 1 4 7 2 3 8 
1 4 6 2 5 7 3 8 
2 4 5 8 1 3...

result:

ok 125000 cases (125000 test cases)

Test #30:

score: 0

Accepted

time: 207ms

memory: 3704kb

input:

100000
1 10
klhmhvkswy
wykjhmhvks
1 10
uqieigoabd
qieigoabdu
1 10
bunljqpvov
vbunljqivo
1 10
ytkmhxtntc
xtntcytkmh
1 10
lufmlhxbvz
ufmlcxbvzl
1 10
cuemsefukn
sefukncueq
1 10
oomyzzliuk
zzliukoomy
1 10
piekrxtsag
rxtsagpiek
1 10
pwhbveolnf
nfpwhbveol
1 10
wsyjzqnbtj
jzqnbojwsy
1 10
iqayiqecea
aiqaytq...

output:

result:

ok 100000 cases (100000 test cases)

Test #31:

score: 0

Accepted

time: 250ms

memory: 3664kb

input:

28571
7 5
rpdbr
kijbw
qotha
wvxmn
frbey
tdjed
vqpoy
havot
bwfrb
edrpd
mnkij
eyqqp
oytdj
brwvx
7 5
pecul
iozuk
kxkfg
ivcha
erold
abatw
otvoe
otvoe
kxkfg
abatw
ivcha
pecul
erold
iozuk
7 5
qmwhz
odnhu
dkzle
roeec
xftep
axzal
kgusp
ecdgu
huxft
epqmw
lekkz
alroe
hzaxz
spodn
7 5
aefno
popfk
shavv
cvhdy
na...

output:

-1
6 5 2 4 3 7 1 
3 6 7 4 2 1 5 
-1
6 3 5 2 1 7 4 
1 7 2 3 5 4 6 
-1
1 3 2 6 4 5 7 
2 4 6 1 3 5 7 
4 5 7 1 6 3 2 
5 2 1 4 3 7 6 
-1
3 7 5 6 2 1 4 
4 5 3 1 2 7 6 
-1
-1
5 1 3 6 7 2 4 
6 3 2 7 1 5 4 
4 2 1 7 3 5 6 
2 4 7 1 5 3 6 
-1
6 1 3 7 5 2 4 
1 2 5 7 3 4 6 
6 7 4 1 5 3 2 
4 7 6 1 2 5 3 
4 1 2 6 5...

result:

ok 28571 cases (28571 test cases)

Test #32:

score: 0

Accepted

time: 690ms

memory: 70920kb

input:

1
1000 1000
plxpgukngtaywjrcxufvdwswaozxzeeduaeqslxuzcevplzosuqsedbplkmzbpyogbndbzmyfeyqamtetcjmaosbaxcrmjanjeglavxlwksvvenehzgrovffaebdtpynzajedywisavqgjjtjnqktzltyfzbvrtsfmdkzsyougzyqcckjcjjtkewysagddaizqnnptunmfyqagnxrzjqpsoqzqptzvjnfilpbgmjbetcgnewclwqxmftpepudwufcmbqtpyxajfmabqyvlgqxzhgumauzxms...

output:

-1

result:

ok 1 cases (1 test case)

Test #33:

score: 0

Accepted

time: 986ms

memory: 418684kb

input:

1
500000 2
bh
nk
zd
bw
cc
la
zr
if
ts
tq
nz
td
rv
th
nw
az
pa
qy
cq
uu
rk
sl
du
ll
jn
fw
qm
rw
va
ii
as
hw
wo
vt
zi
yt
wx
xd
en
ws
we
rw
gk
lp
hh
qp
fj
cu
uu
bp
uq
ge
lb
sa
hg
yx
gm
cu
tr
wj
ws
ei
cv
ct
wn
at
ju
mo
bm
ht
ep
ul
jt
yw
wu
ml
sh
vt
kp
ha
ws
qy
pn
nz
aq
wa
my
mf
bq
ff
xo
br
uc
pt
ne
ya
i...

output:

1 3 2 4 39 29 33 37 5 9 10 32 16 45 23 17 38 91 79 7 22 8 31 68 55 36 101 12 66 62 130 54 77 76 134 163 25 26 116 56 40 71 83 118 147 11 87 105 70 80 85 67 41 74 60 30 14 173 6 178 43 88 15 102 73 120 154 61 18 172 199 140 59 119 19 94 34 96 121 84 128 35 180 110 137 95 97 206 48 162 65 149 230 13 2...

result:

ok 1 cases (1 test case)

Test #34:

score: 0

Accepted

time: 400ms

memory: 73756kb

input:

1
1000000 1
f
l
m
t
y
i
g
k
v
k
g
z
f
h
n
e
v
m
b
g
a
n
i
u
v
a
k
b
e
j
x
n
m
u
a
x
a
g
t
g
a
g
v
p
q
f
g
q
i
f
t
l
t
t
w
z
l
z
n
m
v
r
v
v
t
x
w
q
h
x
h
k
n
t
m
i
y
k
e
j
b
m
u
q
x
n
u
t
v
f
n
h
z
w
g
v
r
m
x
c
a
g
x
p
p
n
w
y
x
j
t
b
d
z
n
h
f
u
u
i
y
p
c
w
b
m
d
k
p
p
m
q
j
k
o
g
g
b
r
w
c
y
d
h
...

output:

285614 933994 285576 146699 146698 644264 343998 817299 644234 285609 413047 817270 343972 29693 146657 644222 146654 146653 343971 817339 644189 644311 344030 146755 963578 485243 817218 817222 285527 817230 571177 387094 571237 485271 571185 413064 644304 285554 817255 817262 344007 644295 485371 ...

result:

ok 1 cases (1 test case)

Test #35:

score: 0

Accepted

time: 92ms

memory: 69988kb

input:

1
2 500000
yoskytdthibiosryionvxhjbnvwyrumjrmogzlngtxwkyxpketeperfdqboobxcccofgoxsjjffgdymvbhrnmcfiresutjbeadpbwuyxbirokynuisiezakhyivnbelkoexbfertmmmpjyerxyrnxvseyyipjqexidomwdzwqgqopwvnguawlvdyqgpsoxuliobzndxyfondeygqyxujboqcmqmwlptkpxflccjwfbzvwjkmddqxuenqirajuqplwjfyumjycekqzgavjrpanuxixmwlmnnvv...

output:

2 1 
1 2

result:

ok 1 cases (1 test case)

Test #36:

score: 0

Accepted

time: 80ms

memory: 69680kb

input:

1
1 1000000
vvzoohphaekmooymvzpvxqaxbgyabgrgrdetsieivthqtvackeaapshmaybrwivlzjtjymeqmjqjoioeknzlajdqeptnywzscjthxqahapfnktonvxbyridjhokyielyfuzzgciiulnuetgfmdppmpywhoouwbbwyhlufupqwkhjubvkplfbzxiegngnewwfpupzypskuhtopvqzczthyaxpepvbkhvitkxgopxprykcrbjnuiideigftkhgzpykkoijuiquebxaaiwaabuxssgqgsofmiid...

output:

1 
1

result:

ok 1 cases (1 test case)

Test #37:

score: 0

Accepted

time: 338ms

memory: 70992kb

input:

1
1000 1000
nnnaamfktzgakyenqodpbujtlowzoloijjqorpyvgfbujjivqhgrvcsuajhkfnxfrtrrhfanoutnxetnhowuknugksqgbtpyixedmyepfgyluqjvgadnsosbevsprmupvmymsmohjpimcbgkrybnnlrgqewddkotengibpfdpfqbehofyslubivwusaxzjnbbuczjponsogapfzqnshokuerpwuewcedjmtykebmibjanhyfhvuieexfxijacmpkqatvctadngmkuefrfqthukhywwqllwwy...

output:

515 368 647 822 652 323 924 783 753 540 942 895 302 480 298 285 960 228 784 253 530 683 956 308 381 522 148 625 299 563 612 891 847 729 99 447 725 575 881 863 439 506 251 8 112 666 605 680 512 378 855 819 96 704 409 326 18 537 214 546 852 392 534 280 560 473 316 346 330 84 357 992 437 885 610 599 24...

result:

ok 1 cases (1 test case)

Test #38:

score: 0

Accepted

time: 230ms

memory: 38356kb

input:

1
500000 2
lm
hm
wf
rl
ze
qc
ku
dz
is
dg
lc
kw
ys
ho
re
gu
pb
on
oe
wc
ya
kx
zh
fg
lb
fn
ys
ci
da
ta
mg
nc
qj
tx
tn
zw
gu
na
ee
oa
qm
zz
hx
rs
fl
bz
ik
fm
sq
xr
tf
id
lh
bk
sw
qx
lw
aa
bx
cg
ns
vl
bg
im
qp
pc
rh
pa
ns
kf
la
pl
am
sz
xs
xq
uc
wf
lz
iq
ok
mh
wi
kj
ui
xl
na
fs
vg
wf
qg
rn
th
ju
rp
fs
w...

output:

160679 128946 59840 114414 488661 167241 300782 10828 215815 362807 377392 417992 129006 260818 474764 314423 392651 392443 207632 224583 200245 53489 451484 194541 73567 220025 145207 59925 117489 175307 80753 362779 80775 407039 452942 313960 216456 247528 350113 4814 130152 452876 332719 265988 1...

result:

ok 1 cases (1 test case)

Test #39:

score: 0

Accepted

time: 389ms

memory: 73428kb

input:

1
1000000 1
h
v
a
h
z
d
c
r
l
b
t
l
d
s
z
h
c
n
p
d
v
t
x
a
z
k
i
q
g
d
p
s
i
a
z
l
e
f
q
t
v
r
b
a
f
v
v
c
z
c
w
u
s
e
d
p
w
c
n
y
f
d
f
j
i
x
b
a
h
m
w
g
b
z
h
d
m
y
q
y
u
d
s
g
l
m
t
p
u
x
w
m
h
c
t
y
p
u
e
l
h
s
x
m
f
t
p
d
f
z
z
k
w
h
s
y
i
h
v
j
w
w
s
v
h
y
a
r
f
y
d
j
w
e
a
h
k
p
x
l
x
a
k
f
...

output:

73949 388221 229700 689402 388234 388246 919114 388252 823097 388254 689397 945670 33621 154154 503949 73944 33641 779940 627198 988046 627201 503931 503930 33606 388171 945682 33596 689457 388172 229727 823077 504005 73965 823090 779937 229718 503984 33609 988053 503978 689429 388212 863425 388218 ...

result:

ok 1 cases (1 test case)

Test #40:

score: 0

Accepted

time: 181ms

memory: 69980kb

input:

1
2 500000
csbazestpjffzjvrjztjidouhfewitwyhczwalacmlfmfpjozlnojeeltcyjkgbwpnzhzdeeublvjcgepkupvlqxhzkjfudcojhtxsrndyipgsuexhdjxodymiofmaxdkhsyallmorhqdrosgvzwvsgobotbwlwnqvohekjougktqmjaknocgtumjjvmtphfnoqrsrfgztpufvtnafmhmmcpxkrjyokgrlvaswhkkxfxguuakezavqkbkvnhjpycgvrsefranfttvrfnoaeempqhlsdzwtrvf...

output:

-1

result:

ok 1 cases (1 test case)

Test #41:

score: 0

Accepted

time: 76ms

memory: 70072kb

input:

1
1 1000000
zcgzehvspliuqlawrvemmxvlapmqsnpdieaqubpadgbsduckarfgikvmcphtdjtgczbfuivcjhpmwgaxoqvbmwldxvqwtcqizfyvxoahqcuyyvdgxzsohnkjblrwuyietchhqusxamzculyvhaqzoftboauhkdxnpxuxbljmftjtyrczfxxsbwkvzhehmwkhvbkjmnuypbjgibszsdtocihfzwuvdpvszccyroufgktzfytdkcrneuvelrcoufxvmxajvhlnikzfemppharjuwicizqodvrj...

output:

1 
1

result:

ok 1 cases (1 test case)

Test #42:

score: 0

Accepted

time: 683ms

memory: 70940kb

input:

1
1000 1000
vkrkwbibcsuczrgypnuclsmvexjomqttgzmpebzbtmtltqyekywmlpmluwwmjjybbnztlxthcphhfayjjegghgyuippcrweyyzgjfnzemamafgtexvhxofarelxdoptwfohqrnjepcpxzkoepuluocahihxhqipydaiermnrbxjpkeundrirpdcalvbjyhhdazarjuwepzaiafcmbaxqlfqcnbzvlamfwgpqoutqvwhilaqswbqzvohiayenlifowexxzvuxrldswlfpjugwozxwzpxeqtkb...

output:

-1

result:

ok 1 cases (1 test case)

Test #43:

score: 0

Accepted

time: 919ms

memory: 418488kb

input:

1
500000 2
pa
fn
bi
ka
az
wj
sf
db
xb
ad
di
ur
he
dq
bv
zf
cw
yw
ha
to
hl
al
wi
pq
pq
ao
eh
ua
xo
oi
dw
nz
do
dn
oq
sd
bn
nj
fa
mx
vx
ss
pp
dz
jk
us
mv
ko
gk
wa
ju
em
bc
tp
qx
cr
rh
ro
qx
vk
bm
ju
ir
kd
ny
gw
sg
js
qt
zi
uf
pg
md
du
he
qy
ur
ge
dp
ho
hb
ig
zi
dr
wq
ix
my
gz
tf
kb
ab
ye
zf
rx
cy
mq
o...

output:

17 104 18 4 5 40 57 92 12 49 55 127 13 1 155 8 20 30 63 28 116 46 2 177 160 180 47 32 48 175 3 71 10 58 24 45 35 73 66 97 11 64 51 59 16 27 77 15 208 226 186 6 19 7 87 56 41 22 21 26 52 90 242 95 82 38 9 25 62 14 201 31 37 39 65 102 133 86 54 75 43 91 33 23 96 117 69 78 110 76 89 60 114 80 68 183 10...

result:

ok 1 cases (1 test case)

Test #44:

score: 0

Accepted

time: 385ms

memory: 73424kb

input:

1
1000000 1
i
b
s
i
b
r
y
g
d
n
a
s
e
b
k
h
d
f
m
c
t
a
e
u
q
d
e
s
f
p
g
t
f
u
l
v
k
z
y
s
d
d
v
m
u
e
l
c
l
v
e
q
i
o
w
f
c
k
f
f
o
y
h
b
o
r
n
h
n
j
w
d
l
z
n
p
u
n
z
t
r
w
d
e
l
g
r
u
a
v
h
t
s
k
i
y
m
q
g
a
x
z
i
p
b
w
e
m
n
i
z
g
u
g
q
c
f
c
e
h
j
e
i
t
d
r
m
g
d
h
z
w
v
y
i
l
o
u
r
m
j
l
d
p
...

output:

955905 733493 40575 733499 247533 733517 733530 247497 733556 247486 247484 955907 733581 733483 733593 247444 247435 247434 733624 733630 733631 733638 40606 733653 733670 247756 733083 733109 733124 40526 247845 733150 733151 733179 733187 247774 733209 247767 247365 733230 247750 733319 733356 73...

result:

ok 1 cases (1 test case)

Test #45:

score: 0

Accepted

time: 947ms

memory: 144420kb

input:

1
100000 10
ehlimdmwkt
jlrfzdjvam
jwtsqoiebv
mlksfsakmd
zamugzmeha
nxepoofxsh
idoigdreky
ugarhoilzd
oalhajmyfd
vfnxfsoasz
fymboaopqw
rgyhcdtcxm
nvgtvzxgqs
uhwapwajcq
udicenzrkr
jgeaupojpv
efrdqjgayp
yvqwqkaipk
jlsbzxdzeh
btdjgvxcqd
uqcoyaaohl
szcxibrkvc
yzyntbtiuo
lbwkorixzq
lfffvwuktb
euhjmdnptr
tb...

output:

30988 72106 76809 44500 84133 75416 28473 45707 91103 42562 94822 68515 75984 50789 79745 69236 31099 21310 30810 96857 20650 95843 28190 68025 21936 26545 81360 31168 16247 97040 96949 78436 11983 73306 82970 97209 36301 7912 59162 12332 39650 81959 67116 15530 22195 97489 64979 21829 59276 15718 1...

result:

ok 1 cases (1 test case)

Test #46:

score: 0

Accepted

time: 303ms

memory: 143232kb

input:

1
100000 10
mqpzaypqsg
rybikrqyzx
gxcfzgdglt
sszegicsli
oxzpnucwde
ezkskhdmiu
lqsgzsxckw
jlglibuvpi
ctqjnskviw
yqhiaisjxf
mpmgtaupwp
swrhvwtxpg
wcgchdtjyk
hynexzwpxj
veaomhaxnn
bluwuxnmyj
zeefjdwksv
lgegdqxuyt
ezkpautemn
ykbpibnfsp
ddbtafikzb
cetuawmhwo
epwldttkrv
lytomstlzm
wugxtmlmzf
atathrowwp
sv...

output:

17 60 29 69 14 2 28 4 21 102 9 5 36 3 31 26 6 16 116 19 34 22 38 23 45 46 64 50 68 10 66 61 47 77 71 13 93 82 105 113 67 40 32 147 97 42 43 86 15 197 20 7 134 172 91 76 193 88 57 18 25 183 30 58 117 149 74 121 70 170 44 24 201 131 229 78 62 119 33 37 85 75 1 90 199 184 114 39 96 59 98 169 8 112 107 ...

result:

ok 1 cases (1 test case)

Test #47:

score: 0

Accepted

time: 700ms

memory: 182560kb

input:

1
200000 5
untrg
qewwk
zdlct
ltaki
tegsd
pllgg
jvwkk
pkcru
donwe
elvdq
crquy
yqlbl
yalff
rwhfy
xlsqg
vzjww
vjdni
vevwr
njecm
onvvj
ldfjq
ypgae
vuuvu
jxgce
weone
hnklb
hkkyw
tuwyp
kgcad
octvg
gfkei
ovmql
kxzta
npvrv
pxenv
hklvf
sfzso
blanl
jigxz
uqcrk
lbehm
cxwbq
ymdzw
hmvpk
wjdqq
kpfls
rktrp
ogdhs
f...

output:

-1

result:

ok 1 cases (1 test case)

Test #48:

score: 0

Accepted

time: 57ms

memory: 10172kb

input:

1
100000 10
fxhzgdmpvu
rbapkxuwdz
rcbtjgzlqz
vuwjdihqwk
brwenfhpot
cazbgafcaa
ylyhnyrgwt
sixsqzjakz
qdxsdrthuu
zdrwkcqqdk
xluoyqriep
wpcqewlpfo
ebcmamyzmt
fanzqaxbew
ikmsqafyun
xczrzagmdn
bbsvmsrtph
sjtudpeyqj
kdvxgfnozj
pnbefumkkh
xjahjflidu
begdvasklf
xcragpudlh
pkugzyrpgn
dtlznmvred
supuawndia
xa...

output:

95476 13713 27723 49989 86742 36665 38089 32084 98966 87221 70778 79915 96796 22962 55610 92946 20843 28257 68359 21314 67802 2435 54044 30659 50335 41496 13509 59596 42302 50697 26990 17595 94704 82029 8003 40541 36792 66790 28502 58918 91078 37209 85520 31870 44548 29600 30071 41853 16390 19108 90...

result:

ok 1 cases (1 test case)

Test #49:

score: 0

Accepted

time: 710ms

memory: 179724kb

input:

1
200000 5
rdaxv
rqwti
srbck
qdtal
ltoxk
ughkh
sywke
cigmu
fioqb
gnycn
cexck
tcekr
byyqn
cgokp
ausjo
ubsgq
sxouf
xxvnu
drjqw
nvaul
ashzf
scexc
ueyta
ryyny
xotaf
prjgo
hjfrk
alqrp
zggry
xrivg
wislr
lzygn
lleum
utbzq
dzbpn
kmkvp
bacqh
kdfik
xaqru
aeeem
otmht
exrjh
poyfh
rgggk
mhbof
kqyzm
czill
oygax
c...

output:

-1

result:

ok 1 cases (1 test case)

Test #50:

score: 0

Accepted

time: 181ms

memory: 69824kb

input:

1
2 500000
tossrwlzkdzzrphwvvnkmdevslssgacszrojwkxgorcupejhwfybmoyegfhulclkqadmdjpfccnbxhsumeffzhfowyhxqqpdrjguansbqlyuglodfwxjphusmwlevcmpjfcbrjbmdbsqovuljaxqfeorcmgjsbwxappqwsuacmjtyhjubdjyevglxpkektgumdrvtwkuzdiyznzactijqouerxfqatzcwjqserfliiqihufyinagdbqglcnqttlhkebmezdjcfvdcmcjgqhygbxmvzndqnywm...

output:

-1

result:

ok 1 cases (1 test case)

Test #51:

score: 0

Accepted

time: 176ms

memory: 69824kb

input:

1
1 1000000
aqfomtfebdjjikpwsgohpqhvbrasmasgmocifvxczotxorlguxtriaftafotynozikgxytfzuztzapeayssibygltogshsbfwlfcqzbfkleizodgzztxzaysqtsvokwictzyehplvlkpucyizyrcimlczpucivarsihznzqmkjyuhajkgasakdeechddnrezbboozngkyxrjkzfgdlzjewmzhfwmfzguwukeeaambyszysderzrbbbdraxbdpqrurmztoepgptyjtbnrwpyntoagemsfeari...

output:

-1

result:

ok 1 cases (1 test case)

Test #52:

score: 0

Accepted

time: 727ms

memory: 148436kb

input:

1
100000 10
kxlhbmfknl
mldtlbegjo
roglqswqdz
fkcfeioyrf
varxnuxhyk
yputtwlqnj
qjfqxkpbug
thnarwcjpt
oqfpxygtat
hagzhuqeem
bwnnbeweqg
semgcubiaz
zoomamfsyb
lhocxkgyvp
nzqeqkhpes
hhhqaraqjq
mdcgqoqgbp
gvsxjqnvjv
sfkoamvaor
sngtozdbrc
yrhpdcfhhf
eptkmcorhi
hwszrfyvqr
xemzcudvkz
rjklevonsv
vnpmsgqdcb
sy...

output:

6115 88257 71426 30319 52920 44123 85871 78340 23291 31719 34704 69317 13876 36336 72635 34141 49268 3555 52660 54753 63133 89569 23973 18325 96693 22630 28318 9696 29196 11782 10842 46611 38520 16791 36952 10199 34955 82334 74279 37956 58989 3747 34249 27212 48018 70819 31569 80653 98277 94069 4329...

result:

ok 1 cases (1 test case)

Test #53:

score: 0

Accepted

time: 934ms

memory: 132820kb

input:

1
100000 10
dplijbwkgs
yigahsojnn
ftafmnroiu
gklxajdgis
lkkiioljfz
mkckxjukta
rwxjqmbddd
opvmalbpzl
ngobvwffjt
ziszyyrvkb
hxjvrmnlnm
pcytdvmvcb
jyzqhxxzpd
ykfcpnynxt
tqfqojtyoc
cyphatoadm
nsibkreiqr
sjujphkbwv
wdccnduvvj
gefgntmint
qodiytabxc
vpeltdzowm
fppmxjflkq
vhohdpiocs
vuudozaxuh
uoonxsqeko
iq...

output:

-1

result:

ok 1 cases (1 test case)

Test #54:

score: 0

Accepted

time: 840ms

memory: 147108kb

input:

1
100000 10
qyjclrjhcv
hrexdepsrh
drbmgtcoed
twbslhlapq
tocwgicnrn
ndudcbqcoz
eunlkqeugj
ictesjwnlv
ukatawfiji
dktfpbehwi
yggzqhuccl
oznogatwir
efcduoftki
ojyrolvatq
fkpbtdwpmj
lliymvqkws
taqnrqowtg
uzfiimgmkz
lmavtcmajn
hagghgkdro
eprquadsxn
ztmzpejqea
vzitenazyw
nhcbbtdnuu
frafncvjoy
javzrcwaus
ap...

output:

67989 93413 97352 74172 32598 51281 82010 37521 25695 72951 85842 56583 64135 99692 494 72992 8163 90247 31979 51518 56769 49426 25895 50046 72241 54341 29765 51230 86490 18817 77055 41853 83193 79140 37207 66870 42955 13282 36142 77845 77670 17661 17343 17688 62856 15337 31523 69812 38737 14680 990...

result:

ok 1 cases (1 test case)

Test #55:

score: 0

Accepted

time: 919ms

memory: 132964kb

input:

1
100000 10
sypalllczm
fyvwvgicyp
jqomdiqcfp
aeaaztogli
imxeiuthuk
ydkrfpfmft
udmkztmwfe
ohyczkizug
fzjyyniywg
itrowixklc
tussdfceqf
evpuvluxpg
iluimcnpco
olstppvixo
dvdpowweue
hxiodpcvjl
xhflfalebb
vpfsjldkqf
dfjslcblpv
dzfptmeyqv
rvgrnefzaj
illzbltjxb
xbbdvyufbw
frovlztkno
gsylowileo
zasbhsaiku
rw...

output:

-1

result:

ok 1 cases (1 test case)

Test #56:

score: 0

Accepted

time: 735ms

memory: 148052kb

input:

1
100000 10
jghpqhzbwn
khmnmmjces
evcbszdsee
cpedxvljuc
bijisgizio
lwybtheziw
azeowrjbes
bvcakdyowl
hqrgrmdxkv
latrynwkve
zbwrfmlfzl
bwsrqcxufw
mlxgssthvv
tbnlrnnagy
fumhlmrrsc
klisexvqbh
fuhiznqnbs
gydnvmatzs
kddgnpybzt
lqtposlfrf
teyereqlki
phffqzyxsk
zivoiupzye
fhyewkrofw
vmhqdpsznj
kkfzikuoop
fd...

output:

63434 22153 7161 26127 46129 44015 65503 46887 63460 68872 59833 52515 77047 58736 33873 12616 89780 22358 63307 27704 58161 9719 11083 80122 24240 87346 9612 75532 60961 16462 20132 80894 83998 33784 62689 91475 86496 17145 53014 53724 26816 10127 48654 12860 60123 49597 16329 39500 86775 44097 735...

result:

ok 1 cases (1 test case)

Test #57:

score: 0

Accepted

time: 826ms

memory: 147716kb

input:

1
100000 10
ajdomreiyg
awhziinfwu
gtqxnxstjq
acgalthnvc
rlnbmtemxi
ouqfgtxjel
zrpqnultuj
ajpfxgstzw
ugccienqit
cgyjlqfkma
fvvzhsruhh
xzvtqxdzfx
bzklilivkt
vracwjjijn
pijsxthpiv
sloandhcmh
uezrrpwwrp
qizguxpvwx
fgfwudmpmw
zmddapzqly
fvxavrqcax
pstjlrahls
zaewasovpv
wxbnphincw
bcauhtuzyg
svvtswoswv
sy...

output:

7140 17362 92567 63366 53842 35567 33880 27584 57967 57880 71785 61899 43886 70810 64035 75800 82088 92653 57222 39828 94727 14643 80178 41110 15282 86547 34281 35475 79759 66034 4635 33519 3685 21184 30758 98205 70899 82443 95213 95810 82239 70624 41881 70519 91384 47729 15705 17547 7048 69263 7435...

result:

ok 1 cases (1 test case)

Test #58:

score: 0

Accepted

time: 1066ms

memory: 142440kb

input:

1
100000 10
otqeflvutp
ktjpzyjlbe
utqhsjbhxi
jmmcfrwiml
vfxvqrdzdk
aenkvqbzpo
bfdzgohawd
vdsqzihcsw
jicioserdw
eberxkmhko
vsmxkcsymw
aunqxqooio
fuserissyp
powkmizyqg
pklrsxredz
kvwierqibi
wrzusyeiou
odjaxqedqv
xxntmrkafl
wkgkolzgdv
jxwmcpjiya
pxyhhfzjsh
ewcjkdaymm
taklqmzazs
mwvlhirbzn
lfzultiztz
sn...

output:

3377 83874 78492 4181 21762 56756 31614 81430 27510 12997 69279 19706 92899 32051 16108 12615 1879 72447 9813 56417 20390 75673 70618 26126 7360 35906 318 46805 80019 89834 26112 81576 17287 46675 3778 12080 49218 80725 39440 68765 59667 88079 64766 21185 32866 75456 6053 98140 44498 62262 6167 6584...

result:

ok 1 cases (1 test case)

Test #59:

score: 0

Accepted

time: 948ms

memory: 134316kb

input:

1
100000 10
uxfboqjiml
urguovogte
hlfrgfwgkz
lnaljmgocb
cbkdynsxzg
jfggokuktr
fgeeeayprq
glgeqdexax
ccwqbwaake
pexvcckyid
rjvzlorehp
jwrolcaeqq
pwftjauyxv
dtblxopysv
pmvikikgse
pldtousdqo
tgenvzvdnr
payixpmmjr
urkthfeotj
pqomqonmqf
wsnfwcbqce
ynjhtrkmcg
nqjuozngbr
ombhjkloow
fxbwspocpf
ovcbrjolwn
yn...

output:

-1

result:

ok 1 cases (1 test case)

Test #60:

score: 0

Accepted

time: 1022ms

memory: 147084kb

input:

1
100000 10
ipzgqbnfvd
sgfrlagntk
gwwweijzea
fxpgdtxgti
waobttsufl
nrdslhdkxf
ssrwruilxq
pdglmfvowa
azjbrlhzff
pchtakzdkl
ajsqpedcoy
pjsukcypln
fiognbhmxj
agpmnzvnms
ikdnsabypt
zaotlspbvj
nummgjsshd
mtteglneuy
eopvrvdxtb
nuwnziuqyv
pmqxpafghb
krwuxxunvh
dnumirddbi
oyiyooimqd
zmlwgndkny
ybxqktsjpq
kv...

output:

-1

result:

ok 1 cases (1 test case)

Test #61:

score: 0

Accepted

time: 1043ms

memory: 142556kb

input:

1
100000 10
vhntzmzfjq
lpkanhwnma
hnshcjeytm
rroumhwnmt
jeweevjgqp
bsegdybxio
rwtjvtvlko
fmpcrdsdes
edijyqpurg
zghldxztvl
xbcsrduzmx
tguxmkqcfz
bajotxtuii
zsfgpkokbg
xrgnvbpctc
clxyepehzt
veudydfurf
mavbkeurwo
nfmwtnwspx
uahthuvvxc
vdaadmfinf
kyhxwovgtv
jnqppwnuvt
hiepfckmpa
oxrklvvyof
iintishepc
eq...

output:

19554 60879 23860 36720 45968 98970 32266 62350 82534 35470 52277 27419 76488 63036 63191 8359 88779 73138 87243 50701 60515 94009 4090 9557 31696 95235 16202 16689 81749 97371 50185 82806 75366 89893 44503 60695 2749 99688 99114 10499 99710 42507 30081 26746 76508 74083 28905 29253 62252 76511 9576...

result:

ok 1 cases (1 test case)

Test #62:

score: 0

Accepted

time: 830ms

memory: 147672kb

input:

1
100000 10
uudwzdlejj
ivabpznlij
uqnmtxmmgg
ntzanognix
qdgoodcnun
pekrqklkez
eejprmjekr
pwblriymwp
rievkuhrez
npbdnosxjq
eoeicddyic
hotgqnlmge
iygqxwlogm
pnsgildmtr
rqkpassked
qpsqosjzsm
phxkunmotd
oohtwpcpli
ejeiosheqn
rzrjlvpkfa
ynajbomlnb
awxowbwzxx
hfajxtyefh
ulxeladiwo
mroseowqdn
fszffsdlmi
lm...

output:

63456 67575 5871 91826 27749 33057 49453 36639 5588 97315 2806 28487 40993 41658 7353 52559 52801 29137 84990 58280 46237 12512 13106 50627 9772 70289 53671 41537 11794 54278 74693 9149 55624 76487 76665 68893 44550 50357 40842 98687 57231 91733 3745 15730 59644 66477 28287 15317 34561 61307 49413 3...

result:

ok 1 cases (1 test case)

Test #63:

score: 0

Accepted

time: 925ms

memory: 134060kb

input:

1
100000 10
akvvptzhlm
ukqiqwgjxr
raftyctsec
tljopwxqgm
odkoyjszvv
vuuxpzuwty
vugkbhgrbq
mghdhtbdmh
cmlrrcpkrj
fropiipnog
fippflholr
hxvyifxfhi
dstwpsdbxl
zekzumxmnr
qywqzyxvln
jacdvjvczu
dpmjugphun
hhrhfdjzkx
jfwnfjfokw
ygziaihrgd
ybrhjiwfaj
nketysvhiu
sydarvrsdv
zlhwpjkvmc
ynaolmsimg
tgjfocrgba
kh...

output:

-1

result:

ok 1 cases (1 test case)

Extra Test:

score: 0

Extra Test Passed