QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#527518 | #7900. Gifts from Knowledge | zake | WA | 20ms | 64100kb | C++17 | 1.8kb | 2024-08-22 16:26:08 | 2024-08-22 16:26:09 |
Judging History
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
Tip: Click on the bar to expand more detailed information
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'