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ID	Problem	Submitter	Result	Time	Memory	Language	File size	Submit time	Judge time
#121656	#855. A Very Different Word	karuna^#	AC ✓	2ms	3504kb	C++14	1.3kb	2023-07-08 16:35:11	2023-07-08 16:35:46

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你现在查看的是最新测评结果

[2023-08-10 23:21:45]
System Update: QOJ starts to keep a history of the judgings of all the submissions.

[2023-07-08 16:35:46]
评测

测评结果：AC
用时：2ms
内存：3504kb

查看

[2023-07-08 16:35:11]
提交

answer

#include <bits/stdc++.h>
#define ff first
#define ss second
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 25000;

int TC, N;
char C;
string A, B;

int main() {
    cin.tie(0); ios_base::sync_with_stdio(0);

    cin>>TC;
    while(TC--)
    {
        cin>>N>>C;
        cin>>A>>B;
        A="?"+A; B="?"+B;

        A[N]+=1;
        for(int i=N; i>=1; i--)
        {
            if(A[i]>'z') A[i]='a', A[i-1]++;
        }

        bool flag=true;
        for(int i=1; i<N; i++)
        {
            if(A[i]!='z') flag=false;
        }
        if(flag && A[N]>C)
        {
            cout<<"NO\n";
            continue;
        }

        flag=false;
        for(int i=1; i<=N; i++) if(A[i]==C) flag=true;
        if(!flag)
        {
            if(A[N]<=C)
            {
                A[N]=C;
            }
            else
            {
                int pos=-1;
                for(int i=N-1; i>=1; i--)
                {
                    if(A[i]!='z') { pos=i; break; }
                }
                A[pos]++;
                for(int i=pos+1; i<=N; i++) A[i]='a';
                A[N]=C;
            }
        }
        if(A<B) cout<<string(A.begin()+1, A.end())<<"\n";
        else cout<<"NO\n";
    }
}

Source code, Language: C++14

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100

Accepted

time: 0ms

memory: 3384kb

input:

4
10 m
christmasa
christmasx
6 m
spring
winter
21 a
ithinkthereforeisleep
ithinkthereforeithink
3 z
tcs
tcz

output:

christmasb
sprinm
ithinkthereforeislefa
NO

result:

ok OK!

Test #2:

score: 0

Accepted

time: 1ms

memory: 3476kb

input:

149
10 m
christmasa
christmasx
21 a
ithinkthereforeisleep
ithinkthereforeithink
3 z
tcs
tcz
6 m
spring
winter
8 b
aaaaaaaa
aaaaaaac
9 l
aaabbbccc
xxxyyyzzz
14 c
abcaxzzzzzzzzz
abcayyyyyyyyyy
10 a
christmasa
christmasx
16 x
abcabcxyyyyzlmnt
abcabcxyyyyzlmob
11 q
qwertyaaaau
qwertyaaaba
12 z
nomnomnom...

output:

christmasb
ithinkthereforeislefa
NO
sprinm
aaaaaaab
aaabbbccl
abcayaaaaaaaaa
christmasb
abcabcxyyyyzlmnu
qwertyaaaav
NO
NO
NO
NO
y
NO
x
r
v
t
u
x
p
y
k
k
p
w
o
r
f
s
y
f
y
p
NO
p
g
o
k
y
m
NO
t
v
r
w
n
o
e
i
o
l
x
q
i
q
o
u
c
NO
h
n
f
f
j
w
y
s
v
y
h
i
n
NO
t
s
l
v
m
v
u
r
m
j
t
v
t
h
k
q
x
h
t
x
f
...

result:

ok OK!

Test #3:

score: 0

Accepted

time: 1ms

memory: 3400kb

input:

308
16 r
pppppppppppppppp
pppppppppppppppq
183 h
yadswtbucvyybqqbzelblcqjxodpsicgtjzagazrnqxycqhadpljbzlneduawfsfxxvoipdafjdpamgeydrjercplbvdbhieiofdgegkgxezghtwwhqzigfjgouvputfkmawngwgvgsknfkgupbwujaielpryeifgfukygdjxmvlkziruxbuxqz
yadswtbucvyybqqbzelblcqjxodpsicgtjzagazrnqxycqhadpljbzlneduawfsfxxv...

output:

NO
yadswtbucvyybqqbzelblcqjxodpsicgtjzagazrnqxycqhadpljbzlneduawfsfxxvoipdafjdpamgeydrjercplbvdbhieiofdgegkgxezghtwwhqzigfjgouvputfkmawngwgvgsknfkgupbwujaielpryeifgfukygdjxmvlkziruxbuxra
rumfusabgtvavyqvmw
lxnfntyxjpmtqnqubthagytoddtpqcxlexdtflwzyokizyrcqkpctbjewodyusiiepdvkmjouoajxwvapvtmatbnwbpsqq...

result:

ok OK!

Test #4:

score: 0

Accepted

time: 2ms

memory: 3412kb

input:

2534
49 v
sttadpsqbqbrttbnnaudjbicnhslcmpgbfphuafaunknstbna
sttadpsqbqbrttbnnaudjbicnhslcmpgbfphuafaunknstbnf
31 y
jhbujlddqaseoestrlgmcaehcmakfdc
jhbujlddqaseoestrlgmcaehcmakfdt
19 w
dobmjbrdafhdglecfdf
dobmjbrdafhdglecfdi
45 v
dufgpssgnuhfehflqrmqpeijaskfsfrfpileifqmbsqia
dufgpssgnuhfehflqrmqpeija...

output:

NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
...

result:

ok OK!

Test #5:

score: 0

Accepted

time: 2ms

memory: 3504kb

input:

4
25000 h
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff...

output:

NO
zxyyadswtbucvyybqqbzelblcqjxodpsicgtjzagazrnqxycqhadpljbzlneduawfsfxxvoipdafjdpamgeydrjercplbvdbhieiofdgegkgxezghtwwhqzigfjgouvputfkmawngwgvgsknfkgupbwujaielpryeiffukygdjxmvlkziruxbuxqzguhcevzputscajbughtgvtaevoywqbvkmgvtmitzclxnfntyxjpmtqnqubthagyoldfdqtcpsqwchxvlmenxfdstdfvlkwqzsygokkgimzsyprkc...

result:

ok OK!