QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#620639 | #7900. Gifts from Knowledge | yld | WA | 17ms | 3876kb | C++20 | 1.9kb | 2024-10-07 19:58:05 | 2024-10-07 19:58:21 |
Judging History
answer
#include<bits/stdc++.h>
#define int long long
#define endl '\n'
using namespace std;
const int mod=1e9+7;
void solve()
{
int n,m,ans=1;
cin>>n>>m;
string s[n+1];
vector<vector<int>> mp(n+1,vector<int>(m+1));
for(int i=1;i<=n;i++)
{
cin>>s[i];
s[i]=' '+s[i];
for(int j=1;j<=m;j++) mp[i][j]=s[i][j]-'0';
}
// for(int i=1;i<=n;i++)
// {
// for(int j=1;j<=m;j++) cout<<mp[i][j]<<' ';
// cout<<endl;
// }
vector<set<int>> line(m+1);
for(int i=1;i<=m;i++)
{
for(int j=1;j<=n;j++)
{
if(mp[j][i]) line[i].insert(j),line[m-i+1].insert(j);
}
}
// for(int i=1;i<=m;i++)
// {
// for(auto x:line[i]) cerr<<x<<' ';
// cerr<<endl;
// }
vector<int> num(m+1);
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
num[j]+=mp[i][j];
num[m-j+1]+=mp[i][j];
}
}
// for(int i=1;i<=m;i++) cout<<num[i]<<' ';
// cout<<endl;
vector<int> fa(n+1);
for(int i=1;i<=n;i++) fa[i]=i;
function<int(int)> getfa=[&](int x)
{
if(x==fa[x]) return x;
return fa[x]=getfa(fa[x]);
};
for(int i=1;i<=m;i++)
{
if(line[i].size()>2) {cout<<0<<endl;return;}
if(line[i].size()==2)
{
if(m==1) ans=0;
int x=*line[i].begin();
int y=*(++line[i].begin());
int temp=num[i]-mp[x][m-i+1],temp2=num[i]-mp[y][m-i+1];
if(temp>2 || temp2>2) {cout<<0<<endl;return;}
int fx=getfa(x),fy=getfa(y);
if(fx==fy) continue;
fa[fy]=fx;
}
}
for(int i=1;i<=n;i++)
if(getfa(i)==i) ans=(ans*2)%mod;
cout<<ans<<endl;
}
signed main()
{
cin.tie(0)->sync_with_stdio(0);
int t=1;
cin>>t;
while(t--) solve();
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3596kb
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: 0
Accepted
time: 15ms
memory: 3592kb
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...
result:
ok 15613 numbers
Test #3:
score: -100
Wrong Answer
time: 17ms
memory: 3876kb
input:
15759 9 6 000000 000000 000000 000000 000000 000000 000000 000000 000000 5 15 010000000000000 000000000000000 000000000000000 000100000000000 000100000000000 14 12 000000000000 000000000000 000000000000 000000000000 000000000000 000000000000 000000000000 000000000000 000000000000 000000000000 000000...
output:
512 16 16384 512 1024 4096 32768 4 2 512 512 512 512 8 2 256 16 4096 512 64 16 4096 512 32 32768 8192 32 2048 128 16 4096 64 32768 256 32 16384 8 512 32 2048 8 16 1024 2048 128 64 32 8 512 8 8192 256 8192 32768 2 8 512 512 256 32 2 2048 8192 8 64 8 2 16384 32768 32768 1024 4096 16384 16384 128 256 4...
result:
wrong answer 2380th numbers differ - expected: '0', found: '4'