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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#666820 | #7900. Gifts from Knowledge | dyfhpu | TL | 5ms | 11640kb | C++17 | 1.0kb | 2024-10-22 20:05:32 | 2024-10-22 20:05:34 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> PII;
const int mod=1e9+7;
const int N = 1000010;
int p[N];
long long power(int a, int b){
long long res = 1;
while (b){
if (b & 1) res = res * a % mod;
b >>= 1;
a = a * a % mod;
}
return res;
}
void solve()
{
int r,c,ans=0,a[N]={0},b[N]={0};
cin>>r>>c;
string s[r+10];
for(int i=1;i<=r;i++) p[i]=i;
for(int i=1;i<=r;i++) {
cin>>s[i];
s[i]=" "+s[i];
for(int j=1;j<=c;j++) {
if(s[i][j]=='1') {
a[j]++;a[c-j+1]++;
if(a[j]>2||a[c-j+1]>2) {
cout<<0<<endl;
return ;
}
if(b[j]==0&&b[c-j+1]==0) {
b[j]=i;
b[c-j+1]=i;
}else {
int x=p[b[j]],y=p[i];
if(x!=y) {
p[y]=x;
}
}
}
}
}
for(int i=1;i<=r;i++) {
if(p[i]==i) ans++;
p[i]=0;
}
cout<<power(2,ans)<<endl;
}
int main()
{
int t = 1;
cin >> t;
std::ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
while (t--)
solve();
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 5ms
memory: 11640kb
input:
3 3 5 01100 10001 00010 2 1 1 1 2 3 001 001
output:
4 0 2
result:
ok 3 number(s): "4 0 2"
Test #2:
score: -100
Time Limit Exceeded
input:
15613 10 10 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 15 8 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1 5 00000 5 9 000000000 000000000 0000...
output:
1024 32768 2 32 32768 128 32 16 16 2 16384 16384 128 128 32768 8192 128 64 16384 2 4 2 4096 16 4096 1024 32768 32768 16384 8 128 2 16 4096 8192 32768 8192 8192 16 16384 16384 256 128 8 256 8 4096 512 2 4 32 32 2 64 512 1024 32768 32768 2 64 16384 16 8192 16 256 16 64 8192 8192 64 1024 2 32768 2 4 51...