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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#623320#7900. Gifts from KnowledgeWaO_o#WA 11ms42672kbC++202.0kb2024-10-09 11:20:162024-10-09 11:20:17

Judging History

你现在查看的是最新测评结果

  • [2024-10-09 11:20:17]
  • 评测
  • 测评结果:WA
  • 用时:11ms
  • 内存:42672kb
  • [2024-10-09 11:20:16]
  • 提交

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

Tip: Click on the bar to expand more detailed information

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'