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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#611210 | #7006. Rikka with Subsequences | Edward2019 | AC ✓ | 1330ms | 4288kb | C++14 | 818b | 2024-10-04 19:54:10 | 2024-10-04 19:54:10 |
Judging History
answer
#include<bits/stdc++.h>
#define int long long
using namespace std;
const int N=210,mod=1e9+7;
int n,a[N],f[N][N],g[N][N];
char s[N][N];
signed main()
{
ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
int T;
cin>>T;
while(T--)
{
memset(f,0,sizeof(f));
cin>>n;
for(int i=1;i<=n;i++)cin>>a[i];
for(int i=1;i<=n;i++)cin>>(s[i]+1);
for(int i=1;i<=n;i++)
{
memset(g,0,sizeof(g));
for(int j=1;j<=n;j++)
for(int k=1;k<=n;k++)
g[j][k]=((g[j-1][k]+g[j][k-1]-g[j-1][k-1]+f[j-1][k-1]*(s[a[j-1]][a[i]]^48))%mod+mod)%mod;
for(int j=1;j<=n;j++)
for(int k=1;k<=n;k++)
f[j][k]=(f[j][k]+(g[j][k]+1)*(a[i]==a[j])*(a[i]==a[k]))%mod;
}
int ans=0;
for(int j=1;j<=n;j++)
for(int k=1;k<=n;k++)
ans=(ans+f[j][k])%mod;
cout<<ans<<"\n";
}
return 0;
}
这程序好像有点Bug,我给组数据试试?
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 4276kb
input:
1 4 1 2 1 2 1111 1111 1111 1111
output:
51
result:
ok single line: '51'
Test #2:
score: 0
Accepted
time: 1330ms
memory: 4288kb
input:
20 195 4 5 4 3 2 4 3 5 1 5 4 3 4 3 1 5 4 4 5 2 2 2 2 4 1 5 3 4 1 1 1 2 1 1 5 5 4 5 4 5 5 4 5 2 1 2 5 4 5 1 1 3 1 2 2 3 3 5 2 3 3 1 4 4 2 4 2 4 3 4 1 1 1 4 3 5 1 1 3 2 2 5 1 3 1 5 1 5 5 3 5 3 3 2 5 1 3 2 4 1 5 5 1 3 3 2 4 2 3 3 3 4 1 3 3 3 5 5 1 1 4 2 5 1 2 5 4 3 5 1 5 5 5 4 2 2 5 3 2 3 4 1 3 2 1 5 3...
output:
806298135 541285042 48173297 222851978 875793336 100057791 156057874 129923599 551277543 874547790 544405786 653241411 521317929 370918040 803940504 969296122 806596012 469227084 338962879 194278629
result:
ok 20 lines