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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#691554 | #7900. Gifts from Knowledge | HomuraAkemi# | WA | 31ms | 41132kb | C++14 | 1.7kb | 2024-10-31 11:58:37 | 2024-10-31 11:58:37 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define LL long long
struct edge{
LL to,nt;
}a[10000005];
LL n,i,j,k,m,t,cnt=0,ans=0;
LL sum[1000005],stat[1000005],nxt[1000005];
string s[1000005];
map<LL,bool> mp;
bool vis[1000005];
bool flag;
const LL mod=1e9+7;
void add(LL x,LL y){
//printf("%lld %lld\n",x,y);
a[++cnt].to=y;a[cnt].nt=nxt[x];nxt[x]=cnt;
}
void dfs(LL x){
vis[x]=true;
for(LL i=nxt[x];i;i=a[i].nt){
if(vis[a[i].to]==false) stat[a[i].to]=stat[x]^1,dfs(a[i].to);
else if(stat[a[i].to]==stat[x]) flag=true;
}
}
int main(){
cin>>t;
while(t--){
for(i=1;i<=n;i++)
nxt[i]=0,stat[i]=0,vis[i]=false;
for(i=1;i<=m;i++)
sum[i]=0;
for(i=1;i<=cnt;i++)
a[i].to=0,a[i].nt=0;
mp.clear();
cnt=0;
cin>>n>>m;
for(i=1;i<=n;i++){
s[i]="";
cin>>s[i];s[i]=" "+s[i];
}
for(i=1;i<=n;i++){
for(j=1;j<=m;j++)
if(s[i][j]=='1') sum[j]++;
}
flag=false;
for(i=1;i<=(m)/2;i++){
if(sum[i]+sum[m-i+1]<=2){
if(sum[i]+sum[m-i+1]==2){
LL x=0,y=0;
for(j=1;j<=n;j++)
if(s[j][i]=='1' || s[j][m-i+1]=='1'){
if(x==0) x=j;
else y=j;
}
if(y>0){
add(x,y),add(y,x);
if(x>y) swap(x,y);
if(mp[x*n+y]==true) flag=true;
mp[x*n+y]=true;
}
}
}
else{
flag=true;break;
}
}
if(m%2==1){
if(sum[(m+1)>>1]>1){
flag=true;
}
}
if(flag==true){
printf("0\n");
continue;
}
LL ans=1;
for(i=1;i<=n;i++)
if(vis[i]==false) dfs(i),ans*=2,ans%=mod;
if(flag==true){
printf("0\n");
continue;
}
printf("%lld\n",ans);
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 41132kb
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: 40596kb
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: 23ms
memory: 40888kb
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 1014th numbers differ - expected: '2', found: '0'