QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#163249#7123. Robot ContestJasonwei#25 200ms4104kbC++201.4kb2023-09-03 22:58:112024-04-28 06:58:08

Details

Tip: Click on the bar to expand more detailed information

Subtask #1:

score: 6
Accepted

Test #1:

score: 6
Accepted
time: 193ms
memory: 3992kb

input:

4 8
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #2:

score: 6
Accepted
time: 185ms
memory: 3744kb

input:

12 7
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #3:

score: 6
Accepted
time: 196ms
memory: 3860kb

input:

15 15
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 ...

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #4:

score: 6
Accepted
time: 189ms
memory: 3860kb

input:

2 2
0 0
0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #5:

score: 6
Accepted
time: 198ms
memory: 3792kb

input:

2 3
0 0 0
0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #6:

score: 6
Accepted
time: 192ms
memory: 4104kb

input:

2 4
0 0 0 0
0 0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #7:

score: 6
Accepted
time: 185ms
memory: 3808kb

input:

2 10
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #8:

score: 6
Accepted
time: 189ms
memory: 3848kb

input:

2 15
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Subtask #2:

score: 10
Accepted

Test #9:

score: 10
Accepted
time: 197ms
memory: 3740kb

input:

2 15
0 1 0 0 0 1 0 0 0 1 0 1 0 0 0
0 0 0 1 0 0 0 1 0 0 0 0 0 1 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #10:

score: 10
Accepted
time: 200ms
memory: 3736kb

input:

2 10
0 1 1 1 1 0 0 0 0 0
0 0 0 0 0 0 1 1 1 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #11:

score: 10
Accepted
time: 188ms
memory: 3796kb

input:

2 15
0 0 1 0 0 0 0 0 0 0 0 0 0 0 0
1 0 0 0 1 1 1 1 0 1 0 0 1 1 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #12:

score: 10
Accepted
time: 177ms
memory: 4100kb

input:

2 15
0 0 0 0 0 0 1 0 0 0 0 0 0 0 0
1 1 1 0 1 0 0 0 0 1 1 1 1 1 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #13:

score: 10
Accepted
time: 193ms
memory: 3796kb

input:

2 15
0 1 0 1 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 1 0 0 1 0 0 0 1 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #14:

score: 10
Accepted
time: 193ms
memory: 3788kb

input:

2 15
0 0 0 1 1 0 0 0 0 0 0 1 1 1 1
1 0 0 0 0 0 1 1 1 0 0 0 0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #15:

score: 10
Accepted
time: 189ms
memory: 4100kb

input:

2 15
0 1 0 0 0 0 0 0 0 0 1 0 0 0 0
0 0 0 0 0 0 1 1 0 0 0 0 0 1 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #16:

score: 10
Accepted
time: 185ms
memory: 4100kb

input:

2 15
0 0 0 1 1 1 0 0 1 0 0 0 1 1 1
1 0 0 0 0 0 0 0 0 0 1 0 0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #17:

score: 10
Accepted
time: 194ms
memory: 3792kb

input:

2 15
0 0 0 0 1 1 1 1 0 0 0 1 0 1 0
1 0 0 0 0 0 0 0 0 1 0 0 0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #18:

score: 10
Accepted
time: 192ms
memory: 3852kb

input:

2 15
0 0 0 1 1 0 1 0 0 0 0 1 1 1 0
0 0 0 0 0 0 0 0 0 1 0 0 0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #19:

score: 10
Accepted
time: 195ms
memory: 3736kb

input:

2 2
0 0
1 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #20:

score: 10
Accepted
time: 184ms
memory: 3856kb

input:

2 10
0 0 0 0 0 1 0 1 1 0
1 0 0 0 0 0 0 0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #21:

score: 10
Accepted
time: 198ms
memory: 3848kb

input:

2 10
0 0 0 0 0 0 0 0 0 0
1 1 0 0 0 0 1 1 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #22:

score: 10
Accepted
time: 183ms
memory: 3852kb

input:

2 10
0 0 0 0 0 1 0 0 0 0
1 0 0 0 0 0 0 0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #23:

score: 10
Accepted
time: 193ms
memory: 3856kb

input:

2 15
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 1 0 0 0 0 0 0 0 0 0 1 0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #24:

score: 10
Accepted
time: 181ms
memory: 3788kb

input:

2 15
0 0 0 0 0 0 0 0 0 0 0 0 1 0 1
0 0 0 0 0 0 0 1 0 0 1 0 0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #25:

score: 10
Accepted
time: 188ms
memory: 4024kb

input:

2 15
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 1 1 1 0 0 1 1 0 1 0 1 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #26:

score: 10
Accepted
time: 191ms
memory: 3736kb

input:

2 15
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 1 0 1 0 0 1 0 1 1 1 0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #27:

score: 10
Accepted
time: 192ms
memory: 3804kb

input:

2 15
0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
1 1 1 1 0 0 1 1 1 0 1 0 0 0 0
t

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Subtask #3:

score: 9
Acceptable Answer

Test #28:

score: 9
Acceptable Answer
time: 194ms
memory: 3792kb

input:

15 15
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 1 1 0 1 1 1 1 1 1 1 0 1 1 0
1 0 1 1 0 0 0 0 0 0 0 1 0 1 0
0 0 0 0 1 1 0 1 1 0 1 1 0 1 0
1 0 1 0 1 0 0 1 0 0 0 0 0 0 0
0 0 1 0 0 0 1 0 1 1 0 1 0 1 0
1 0 1 0 1 0 1 0 0 0 1 0 1 0 1
0 0 0 1 0 1 0 0 1 0 0 0 0 0 0
0 1 1 1 0 0 0 1 0 0 1 1 1 1 0
0 1 0 0 0 1 1 0 1 0 1 0 ...

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

points 0.50

Test #29:

score: 18
Accepted
time: 194ms
memory: 3856kb

input:

15 15
0 0 0 0 0 0 0 0 0 1 1 1 1 1 1
1 1 1 1 1 1 1 1 0 0 0 0 0 1 1
1 1 1 1 1 1 1 1 1 1 1 1 0 1 1
1 1 1 1 1 1 1 1 1 1 1 1 0 1 1
1 1 1 1 1 1 1 1 1 1 1 1 0 1 1
1 1 1 1 1 1 1 1 1 1 1 0 0 1 1
1 1 1 1 1 1 1 1 1 1 1 0 1 1 1
1 1 1 1 1 1 1 1 1 1 1 0 1 1 1
1 1 1 1 1 1 1 1 1 1 0 0 1 1 1
1 1 1 1 1 1 1 1 1 1 0 1 ...

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #30:

score: 18
Accepted
time: 190ms
memory: 3996kb

input:

15 15
0 0 0 0 1 1 1 1 1 1 1 1 1 1 1
1 1 1 0 1 1 1 1 1 1 1 1 1 1 1
1 1 1 0 1 1 1 1 1 1 1 1 1 1 1
1 0 0 0 1 1 1 1 1 1 1 1 1 1 1
1 0 1 1 1 1 1 1 1 1 1 1 1 1 1
1 0 1 1 1 1 1 1 1 1 1 1 1 1 1
1 0 1 1 1 1 1 1 1 1 1 1 1 1 1
1 0 1 1 1 1 1 1 1 1 1 1 1 1 1
1 0 0 0 0 1 1 1 1 1 1 1 1 1 1
1 1 1 1 0 1 1 1 1 1 1 1 ...

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 

Test #31:

score: 9
Acceptable Answer
time: 185ms
memory: 3740kb

input:

15 15
0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
1 0 1 0 1 1 0 1 1 0 1 1 0 0 1
0 1 0 0 0 1 0 0 1 0 1 0 1 0 0
0 0 1 0 1 0 1 1 0 1 0 0 1 0 1
1 0 0 1 0 0 1 0 0 0 0 1 0 0 0
0 1 0 0 0 1 0 1 1 0 1 0 0 1 1
0 0 0 1 0 0 0 0 0 0 0 1 0 0 0
1 0 1 0 1 0 1 1 0 1 0 0 0 1 0
1 0 1 0 0 0 1 0 0 1 0 1 0 0 1
0 0 0 1 1 1 0 1 0 0 1 0 ...

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

points 0.50

Test #32:

score: 9
Acceptable Answer
time: 187ms
memory: 3860kb

input:

15 15
0 0 0 0 1 0 0 0 0 1 0 0 0 0 0
0 1 0 1 0 1 0 1 0 0 0 1 1 0 1
0 0 1 0 0 1 1 0 1 0 1 1 0 1 0
0 1 1 0 1 0 0 0 0 0 1 0 0 0 0
0 0 0 0 0 0 1 0 1 0 0 0 1 1 1
0 1 0 1 1 0 0 1 0 0 1 0 0 0 0
1 0 0 0 1 0 1 0 1 0 1 1 0 1 0
1 1 0 1 1 1 0 0 0 0 0 0 1 0 1
1 1 0 0 1 0 1 1 1 0 1 1 0 0 0
1 0 0 1 0 0 0 0 1 0 0 0 ...

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

points 0.50

Test #33:

score: 9
Acceptable Answer
time: 189ms
memory: 3804kb

input:

15 15
0 0 0 0 0 1 1 0 1 0 1 0 1 0 1
0 1 1 0 1 0 0 0 0 0 0 0 0 0 0
0 0 1 0 0 0 1 1 1 1 1 1 1 1 1
0 1 1 0 1 0 0 0 0 0 0 0 0 0 0
0 1 0 0 1 0 1 0 1 0 1 0 1 0 1
1 0 0 1 0 0 0 1 0 1 0 0 1 1 0
0 1 1 0 0 1 0 0 0 0 1 1 0 0 0
0 1 0 0 1 0 0 1 0 1 0 1 1 0 1
0 0 0 1 0 1 1 1 0 0 0 0 0 0 0
0 1 0 0 0 0 0 0 1 1 0 1 ...

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

points 0.50

Test #34:

score: 9
Acceptable Answer
time: 184ms
memory: 4096kb

input:

15 15
0 1 0 0 1 0 0 1 0 1 0 0 0 1 0
0 1 0 1 1 0 1 0 0 0 0 1 0 0 0
0 0 0 0 0 0 0 0 1 1 0 0 1 0 1
0 1 1 0 1 1 1 0 0 0 1 1 0 0 0
1 0 0 0 0 0 0 1 1 1 0 0 1 0 1
0 1 0 1 1 0 1 0 0 1 0 1 0 1 1
0 0 0 0 0 1 0 0 1 0 0 1 0 0 1
0 1 1 0 1 0 1 0 0 0 1 0 0 1 0
1 0 1 0 1 0 0 0 1 1 0 1 0 0 0
1 0 0 0 0 0 1 0 0 1 0 1 ...

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

points 0.50

Test #35:

score: 9
Acceptable Answer
time: 191ms
memory: 3860kb

input:

15 15
0 1 0 0 0 1 0 1 0 0 1 1 0 0 1
0 0 0 1 1 0 0 0 0 1 0 0 1 0 0
1 0 1 0 0 1 0 1 0 0 0 1 1 0 1
0 0 1 1 0 0 0 1 0 1 0 0 0 0 0
1 0 0 0 0 1 0 1 0 0 1 0 1 0 1
1 0 1 0 1 0 0 1 0 1 0 0 1 1 0
0 0 1 0 0 1 0 0 1 0 1 0 0 0 0
1 0 1 0 1 0 0 1 0 0 0 0 1 0 1
0 1 0 0 0 1 1 0 0 1 0 1 0 1 0
0 0 0 1 0 1 0 0 1 0 0 0 ...

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

points 0.50

Test #36:

score: 9
Acceptable Answer
time: 188ms
memory: 3792kb

input:

15 15
0 0 0 1 0 0 0 1 0 0 1 0 0 1 0
0 1 1 0 0 1 0 1 0 1 0 1 0 1 0
0 1 0 1 1 0 0 0 0 0 0 0 0 0 0
0 0 0 1 0 0 1 1 1 0 1 0 1 1 0
0 1 0 1 0 1 0 0 0 0 1 1 0 1 1
0 1 0 1 0 0 1 1 1 0 0 0 0 0 0
0 0 1 0 0 1 1 0 1 0 1 1 1 0 1
0 1 0 0 1 1 0 0 0 0 0 0 0 1 0
0 1 1 0 0 0 1 0 1 0 1 0 1 0 0
0 0 0 0 1 0 0 1 0 0 0 1 ...

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

points 0.50

Test #37:

score: 9
Acceptable Answer
time: 187ms
memory: 4100kb

input:

15 15
0 1 0 0 1 0 1 0 0 0 1 0 0 0 1
0 0 1 0 1 0 0 0 1 1 0 1 0 1 0
1 0 0 0 0 1 1 0 0 0 0 0 0 0 0
1 0 1 1 0 0 0 0 1 1 0 1 0 1 0
0 0 0 1 1 0 1 0 1 1 1 0 1 0 0
1 0 1 0 0 0 1 0 0 1 0 0 0 0 1
0 0 1 1 1 0 1 0 1 0 1 1 1 0 1
1 0 0 0 1 0 1 0 1 0 0 0 0 0 0
0 0 1 1 1 0 1 1 1 1 0 1 0 1 0
1 0 0 0 0 1 0 0 1 0 1 0 ...

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

points 0.50

Test #38:

score: 9
Acceptable Answer
time: 185ms
memory: 3896kb

input:

15 15
0 0 0 1 0 0 0 0 0 0 1 0 0 1 0
0 1 1 0 1 1 0 1 0 1 0 0 1 0 0
0 0 0 0 0 1 0 1 0 0 1 0 0 1 0
1 0 1 1 0 0 1 0 1 0 0 1 0 1 0
0 0 0 0 1 0 0 0 1 0 1 0 0 0 0
0 1 0 1 0 0 1 0 0 0 0 0 1 0 1
1 0 0 0 1 1 0 0 1 0 1 0 1 0 0
1 1 0 1 0 0 1 1 0 0 1 0 0 1 0
1 0 0 1 0 1 0 0 1 0 1 0 1 0 1
0 0 1 0 0 0 1 0 0 1 0 0 ...

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

points 0.50

Test #39:

score: 9
Acceptable Answer
time: 187ms
memory: 3792kb

input:

15 15
0 0 1 0 0 0 0 0 0 0 1 0 1 0 0
1 0 0 0 1 1 0 1 1 0 1 0 1 0 1
1 0 1 1 0 0 1 0 0 1 0 0 1 0 0
0 0 0 0 0 1 0 1 0 1 0 1 1 0 1
0 1 0 1 1 0 0 0 0 1 0 1 0 0 0
0 0 1 1 1 0 1 0 1 0 0 1 0 1 0
0 1 0 1 0 0 0 1 1 1 0 0 0 0 1
0 0 0 0 0 1 0 0 1 0 0 1 1 0 0
0 1 1 0 1 1 1 0 0 1 0 0 0 1 0
0 1 0 0 0 1 1 1 0 1 0 1 ...

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

points 0.50

Subtask #4:

score: 0
Wrong Answer

Test #40:

score: 0
Wrong Answer
time: 194ms
memory: 3796kb

input:

15 15
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 1 0 1 1 0 0 0 0 0 0 0 0 0 0
0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 1 0 1 1 0 0 0 0 0 0 0 0
0 0 0 1 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 1 0 1 1 0 0 0 0 0 0
0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 1 0 1 1 0 0 0 0
0 0 0 0 0 0 0 1 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 1 0 1 ...

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

wrong answer Not a path

Subtask #5:

score: 0
Wrong Answer

Test #64:

score: 0
Wrong Answer
time: 185ms
memory: 3740kb

input:

15 15
0 0 0 0 1 0 0 1 0 0 0 0 0 0 0
1 1 0 0 0 0 0 0 0 1 1 0 1 1 0
0 0 1 1 1 1 1 1 1 0 0 1 0 0 0
0 0 0 0 0 0 0 0 0 0 0 1 0 0 1
0 1 1 1 1 1 1 1 1 0 0 1 0 0 0
0 1 0 0 0 0 0 0 1 1 0 0 1 0 0
0 0 1 0 0 1 0 0 0 0 0 0 0 1 0
0 0 1 0 0 1 1 0 0 1 0 0 0 1 0
0 1 0 0 1 0 0 1 1 0 1 1 1 0 0
0 1 0 0 0 0 0 0 1 0 0 0 ...

output:

p71c1rw3EvfjFcMVWG0EOedGbWDX5uUp
OK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

wrong answer Not a path