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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#722325 | #7900. Gifts from Knowledge | ref | WA | 4ms | 41772kb | C++20 | 4.6kb | 2024-11-07 18:38:06 | 2024-11-07 18:38:06 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> PII;
#define int long long
const int N=1e6+10;
string b[N];
int cnt[N];
int p[N];
int ans[N];
int ch[N];
const int mod=1e9+7;
int qpow(int t,int n)
{
int y=1;
while(n)
{
if(n&1)
{
y=(y*t)%mod;
}
t=(t*t)%mod;
n>>=1;
}
return y;
}
void solve()
{
int r,c;
cin>>r>>c;
for(int i=1;i<=r;i++)
{
ans[i]=0;
}
for(int i=1;i<=c;i++)
{
cnt[i]=0;
ch[i]=0;
p[i]=0;
}
for(int i=1;i<=r;i++)
{
cin>>b[i];
b[i]=" "+b[i];
}
for(int i=1;i<=r;i++)
{
int flag=0;
for(int j=1;j<=c;j++)
{
if(b[i][j]=='1')
{
ch[j]++;
if(ch[j]>2)
{
flag=1;
}
}
}
if(flag==1)
{
for(int j=1;j<=c;j++)
{
if(b[i][j]=='1')
{
ch[j]--;
ch[c-j+1]++;
}
}
for(int j=1;j<=c;j++)
{
if(b[i][j]=='1')
{
if(ch[c-j+1]>1)
{
cout<<0<<endl;
return ;
}
}
}
}
}
for(int i=1;i<=r;i++)
{
vector<int>sb;
vector<int>sb1;
int flag=0;
for(int j=1;j<=c;j++)
{
if(b[i][j]=='1')
{
sb.push_back(j);
cnt[j]++;
if(cnt[j]>1)
{
flag=1;
}
}
}
if(flag==0)
{
for(int j=0;j<(int)sb.size();j++)
{
cnt[sb[j]]--;
cnt[c-sb[j]+1]++;
sb1.push_back(c-sb[j]+1);
}
for(int j=0;j<(int)sb1.size();j++)
{
if(cnt[sb1[j]]>1)
{
flag=2;
break;
}
}
if(flag==0)
{
for(int j=0;j<(int)sb1.size();j++)
{
p[sb1[j]]=i;
}
ans[i]=1;
}
}
if(flag!=0)
{
if(flag==1)
{
ans[i]=1;
for(int j=0;j<(int)sb.size();j++)
{
cnt[sb[j]]--;
ans[p[sb[j]]]=0;
if(p[sb[j]]!=0)
{
p[sb[j]]=i;
}
cnt[c-sb[j]+1]++;
p[c-sb[j]+1]=i;
}
// for(int j=0;j<(int)sb.size();j++)
// {
// if(cnt[c-sb[j]+1]>1)
// {
// cout<<0<<endl;
// return ;
// }
// }
for(int j=1;j<=c;j++)
{
if(ans[p[j]]==0&&p[j]!=0)
{
p[j]=i;
}
}
}
else
{
ans[i]=1;
for(int j=0;j<(int)sb1.size();j++)
{
cnt[sb1[j]]--;
ans[p[sb1[j]]]=0;
if(p[sb1[j]]!=0)
{
p[sb1[j]]=i;
}
cnt[c-sb1[j]+1]++;
p[c-sb1[j]+1]=i;
}
// for(int j=0;j<(int)sb1.size();j++)
// {
// if(cnt[c-sb1[j]+1]>1)
// {
// cout<<0<<endl;
// return ;
// }
// }
for(int j=1;j<=c;j++)
{
if(ans[p[j]]==0&&p[j]!=0)
{
p[j]=i;
}
}
}
ans[i]=1;
}
}
int res=0;
for(int i=1;i<=r;i++)
res+=ans[i];
cout<<qpow(2,res)<<endl;
}
signed main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int t;
while(cin>>t)
{
while(t--)
{
solve();
}
}
}
Details
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Test #1:
score: 0
Wrong Answer
time: 4ms
memory: 41772kb
input:
3 3 5 01100 10001 00010 2 1 1 1 2 3 001 001
output:
4 2 2
result:
wrong answer 2nd numbers differ - expected: '0', found: '2'