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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#581710#7900. Gifts from KnowledgegggggggWA 40ms28388kbC++141.1kb2024-09-22 13:57:552024-09-22 13:57:58

Judging History

你现在查看的是最新测评结果

  • [2024-09-22 13:57:58]
  • 评测
  • 测评结果:WA
  • 用时:40ms
  • 内存:28388kb
  • [2024-09-22 13:57:55]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
const int N=1000005,P=1e9+7;
int r,c,col[N];
vector<int> G[N];
int dfs(int u){
    for(auto v:G[u]){
        if(!col[v]) col[v]=3-col[u],dfs(v);
        else if(col[v]+col[u]!=3) return 1;
    }
    return 0;
}
void solve(){
    scanf("%d%d",&r,&c);
    string b[r];
    for(int i=0;i<r;i++) cin>>b[i];
    int ct=0;
    if(c%2==1){
        for(int i=0;i<r;i++) ct+=(b[i][(c+1)/2-1]=='1');
        if(ct>1) return puts("0"),void();
    }
    for(int i=0;i<r;i++) G[i].clear();
    for(int i=0;i<(c/2);i++){
        vector<int> v;
        for(int j=0;j<r;j++){
            if(b[j][i]=='1') v.push_back(j);
            if(b[j][c-1-i]=='1') v.push_back(j);
            if(v.size()>2) return puts("0"),void();
        }
        if(v.size()==2&&v[0]!=v[1]) G[v[0]].push_back(v[1]),G[v[1]].push_back(v[0]); 
    }
    for(int i=0;i<r;i++) col[i]=0;
    int as=1;
    for(int i=0;i<r;i++) if(!col[i]){
        col[i]=1,as=2ll*as%P;
        if(dfs(i)) return puts("0"),void();
    }
    printf("%d\n",as);
}
int main(){
    int T;
    scanf("%d",&T);
    while(T--) solve();
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 3ms
memory: 28236kb

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: 40ms
memory: 28388kb

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: 19ms
memory: 28348kb

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'