QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#619999 | #7900. Gifts from Knowledge | Orthos | WA | 35ms | 28908kb | C++17 | 2.5kb | 2024-10-07 16:15:52 | 2024-10-07 16:15:52 |
Judging History
answer
#include<bits/stdc++.h>
typedef long long ll;
using namespace std;
int t;
ll r,c;
string s;
ll ans;
const ll mod=1e9+7;
vector<char> ve[1000005];
int f[1000005];
void init(){
for(int i=0;i<=2*r-1;i++){
f[i]=i;
}
}
int find(int x){
return f[x]!=x?f[x]=find(f[x]):x;
}
void merge(int x,int y){
int u=find(x),v=find(y);
if(u!=v){
f[v]=u;
}
return;
}
void Clear(){
for(int i=0;i<r;i++){
ve[i].clear();
}
}
void solve(){
cin>>r>>c;
init();
ans=1;
for(int i=0;i<r;i++) {
cin >> s;
for (int j = 0; j < c; j++) {
ve[i].push_back(s[j]);
}
}
for(int i=0;i<(c+1)/2;i++){
int f1=-1,f2=-1;
for(int j=0;j<r;j++){
if(ve[j][i]=='1'){
if(f1==-1){
f1=j;
}
else if(f2==-1){
f2=j;
}
else{
cout<<"0\n";
Clear();
return;
}
}
if(ve[j][c-i-1]=='1'&&c-i-1!=i){
if(f1==-1){
f1=j;
}
else if(f2==-1){
f2=j;
}
else{
cout<<"0\n";
Clear();
return;
}
}
}
if(c-i-1==i){
if(f2!=-1){
cout<<0<<"\n";
Clear();
return;
}
// for(int i=1;i<=r;i++){
// ans=ans*2%mod;
// }
// cout<<ans<<"\n";
// Clear();
// return ;
}
if(f1!=-1&&f2!=-1){
if(f1==f2){
merge(f1,f1);
merge(f1+r,f1+r);
}
else{
merge(f1,f2+r);
merge(f1+r,f2);
}
}
}
for(int i=0;i<r;i++){
if(find(i)==i+r){
cout<<0<<"\n";
Clear();
return;
}
}
int count=0;
for(int i=0;i<=2*r-1;i++){
if(find(i)==i){
count++;
}
}
for(int i=1;i<=count/2;i++){
ans=ans*2%mod;
}
cout<<ans<<"\n";
Clear();
return;
}
int main() {
// ios::sync_with_stdio(0);
// cin.tie(0);
cin>>t;
while(t--){
solve();
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 28120kb
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: 31ms
memory: 28908kb
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: 35ms
memory: 27776kb
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'