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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#623320 | #7900. Gifts from Knowledge | WaO_o# | WA | 11ms | 42672kb | C++20 | 2.0kb | 2024-10-09 11:20:16 | 2024-10-09 11:20:17 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define deg( x ) cout<<""#x"="<<x<<endl
#define endl '\n'
#define pll pair<int,int>
#define fr frist
#define se second
const int N=1e6+10;
const int mod=1e9+7;
string S[ N ];
int A[ N ];
int dis[ N ];
int cnt[ N ];
void init( int n ){
for( int i=1; i<=n; i++ ) dis[ i ]=i,cnt[ i ]=1;
}
int find( int x ){
if( x==dis[ x ] ) return x;
dis[ x ]=find( dis[ x ] );
return find( dis[ x ] );
}
void add( int i , int j ){
int a=find( i ) , b=find( j );
dis[ a ]=b;
// cnt[ b ]+=cnt[ a ];
}
vector<int> G[ N ];
void solve( ){
int n,m;
cin>>n>>m;
for( int i=1; i<=m; i++ ) G[ i ].clear();
for( int i=1; i<=m; i++ ) A[ i ]=0;
init( n );
bool ok=false;
for( int i=1; i<=n; i++ ){
cin>>S[ i ];
for( int e=0; e<m; e++ ){
if( S[ i ][ e ]=='1' ){
int a1=e+1 , a2=m-e;
G[ a1 ].emplace_back( i );
if( a1!=a2 ) G[ a2 ].emplace_back( i );
}
}
}
if( m&1 ){
if( G[ (m+1)/2 ].size()>1 ) ok=true;
}
for( int i=1; i<=m; i++ ){
if( G[ i ].size() >= 3 ){
ok=true;
break;
}
}
if( ok ) cout<<0<<endl;
else{
for( int i=1; i<=m; i++ ){
for( int e=1; e<G[ i ].size(); e++ ){
add( G[ i ][ e ] , G[ i ][ 0 ] );
}
}
int ans=1;
for( int i=1; i<=n; i++ ){
if( dis[ i ]==i ){
//if( cnt[ find( i ) ]==1 )
ans*=2, ans%=mod;
//else ans*=cnt[ find( i ) ], ans%=mod;
}
}
cout<<ans<<endl;
}
}
signed main() {
ios::sync_with_stdio( 0 );
cin.tie( 0 ); cout.tie( 0 );
int T=1;
cin>>T;
while( T-- ){
solve( );
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 4ms
memory: 41908kb
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: 8ms
memory: 42672kb
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: 11ms
memory: 41600kb
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'