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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#527518#7900. Gifts from KnowledgezakeWA 20ms64100kbC++171.8kb2024-08-22 16:26:082024-08-22 16:26:09

Judging History

你现在查看的是最新测评结果

  • [2024-08-22 16:26:09]
  • 评测
  • 测评结果:WA
  • 用时:20ms
  • 内存:64100kb
  • [2024-08-22 16:26:08]
  • 提交

answer

#include <bits/stdc++.h>
#define int long long
#define pb push_back
using namespace std;
const int N=1e6+10,mod=1e9+7;
string s[N];
vector<int> a[N];
int flag[N],cnt[N],fa[2*N];

int qpow(int a,int x){
	int res=1;
	while(x){
		if(x&1) res=res*a%mod;
		a=a*a%mod;
		x>>=1;
	}
	return res;
}

int find (int x){
	if(fa[x]!=x) fa[x]=find(fa[x]);
	return fa[x];
}

signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	int t;
	cin>>t;
	while(t--){
		int r,c;
		cin>>r>>c;
		for(int i=1;i<=r;i++) a[i].clear();
		for(int i=1;i<=2*r;i++) fa[i]=i; 
		for(int j=1;j<=c;j++){
			flag[j]=0;
			cnt[j]=0;
		}
		for(int i=1;i<=r;i++){
			cin>>s[i];
			s[i]=' '+s[i];
		}
		for(int i=1;i<=r;i++){
			a[i].pb(0);
			for(int j=1;j<=c;j++){
				a[i].pb(s[i][j]-'0');
			}
		}
		bool ok=0;
		for(int j=1;j<=c;j++){
			for(int i=1;i<=r;i++) cnt[j]+=a[i][j];
		}
		for(int j=1;j<=c/2;j++){
			if(cnt[j]+cnt[c-j+1]>=3){
				ok=1;
				break;
			}
		}
		if(c&1){
			if(cnt[(c+1)/2]>=2) ok=1;
		}
		if(ok){
			cout<<0<<'\n';
			continue;
		}
		for(int i=1;i<=r;i++){
			for(int j=1;j<=c;j++){
				if(a[i][j]){
					if(flag[j]==0) flag[j]=flag[c-j+1]=i;
					else if(flag[j]!=i){
						int pre=flag[j];
						if(a[pre][j]){
							int a=find(i),b=find(pre);
							fa[a]=b;
							a=find(i+r),b=find(pre+r);
							fa[a]=b;
						}
						else{
							int a=find(i+r),b=find(pre);
							fa[a]=b;
							a=find(i),b=find(pre+r);
							fa[a]=b;
						}
					}
				}
			}
		}
		bool ok1=0;
		for(int i=1;i<=r;i++){
			if(find(i)==find(i+r)){
			//	cout<<"tst\n"<<i<<'\n';
				ok1=1;
				break;
			}
		}
		if(ok1){
			cout<<0<<'\n';
			continue;
		}
		int cnt=0;
		for(int i=1;i<=2*r;i++){
			if(find(i)==i) cnt++;
		}
		cout<<qpow(2,cnt/2)<<'\n';
	}
	return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 7ms
memory: 63040kb

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: 20ms
memory: 64100kb

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: 0
Accepted
time: 15ms
memory: 63396kb

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:

ok 15759 numbers

Test #4:

score: -100
Wrong Answer
time: 19ms
memory: 62452kb

input:

15734
3 6
000101
010000
001110
5 7
0010010
1000000
0101000
0000000
0000000
10 9
000000000
100000000
000000000
000000000
000010000
000000001
000000000
000000000
000000000
000000000
5 14
10000000000000
00001001000000
00000100000000
00000000000000
00000100000000
5 14
00000000000000
00010000000100
00000...

output:

0
16
512
16
32
4096
0
256
0
0
0
0
4096
8
1024
128
8192
0
128
0
2
0
0
32
64
0
0
0
4096
64
8
8
32
128
64
4096
2
512
16384
4
2
0
0
32
0
4096
8
0
8192
256
256
64
0
32
0
32
0
256
4
16384
1024
4
0
16
256
0
2048
64
8
0
0
32768
2048
512
2048
2
0
8192
0
2
2048
16
512
256
1024
0
0
2
32
512
16384
0
32
1024
102...

result:

wrong answer 980th numbers differ - expected: '0', found: '2'