QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#645748 | #7900. Gifts from Knowledge | laing2122 | WA | 10ms | 3792kb | C++17 | 2.4kb | 2024-10-16 19:42:52 | 2024-10-16 19:42:52 |
Judging History
answer
#include<iostream>
#include<algorithm>
#include<vector>
#include<map>
#include<random>
#include<string>
#include<time.h>
#include<cstring>
#include<set>
#include<cmath>
#include<queue>
#define int unsigned long long
#define endl '\n'
#define F first
#define S second
#define sz size()
#define B begin()
#define pb push_back
#define D end()
#define pii pair<int,int>
#define ln cout<<'\n'
using namespace std;
typedef long long ll;
const int N=1e6+10;
const int P=1331;
const int mod=1e9+7;
int s[N];
ll ksm(ll m,ll k,ll mod)
{
ll ans=1;
ll t=m;//通过t来预处理m的二次方幂
while(k){
if(k&1) ans=ans*t%mod;//判断k的二进制末位是否为1,相当于k%=2
t=t*t%mod;//预处理
k>>=1;//将k的二进制位右移相当于k/=2
}
return ans;
}
void init (int n)
{
for(int i=1;i<=n;i++) s[i]=i;
}
int find(int x)
{
if(x!=s[x]) s[x]=find(s[x]);
return s[x];
}
void mer(int x,int y)
{
x=find(x);y=find(y);
if(x!=y) s[x]=s[y];
}
void solve()
{
int n,m;cin>>n>>m;
init(m);
string a[n+1];
for(int i=1;i<=n;i++)
{
cin>>a[i];
a[i]=" "+a[i];
}
// for(int i=1;i<=n;i++)
// {
// cout<<a[i]<<'\n';
// }
vector<int>ji[m+2];
if(m%2==0)
{
int x=m/2+1;
for(int i=1;i<=n;i++)
{
for(int j=1;j<x;j++)
{
if(a[i][j]=='1')
{
ji[j].pb(i);
}
}
}
for(int i=1;i<=n;i++)
{
for(int j=x;j<=m;j++)
{
if(a[i][j]=='1')
{
ji[j].pb(i);
}
}
}
m++;
}else
{
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
if(a[i][j]=='1') ji[j].pb(i);
}
}
}
// for(int i=1;i<=m;i++)
// {
// for(auto x:ji[i]) cout<<x<<' ';
// ln;
// }
int x=m/2+1;
if(ji[x].sz>=2)
{
cout<<0<<'\n';
return ;
}
for(int i=1;i<x;i++)
{
int j=m-i+1;
set<int>u;
// for(auto x:ji[i]) u.insert(x);
// for(auto x:ji[j]) u
// cout<<i<<' '<<j<<'\n';
if(ji[i].sz+ji[j].sz>2)
{
cout<<0<<'\n';return ;
}
if(ji[i].sz+ji[j].sz==2)
{
vector<int>d;
for(auto c:ji[i]) d.pb(c);
for(auto c:ji[j]) d.pb(c);
// cout<<d[0]<<' '<<d[1]<<'\n';
mer(d[0],d[1]);
}
}
int ans=0;
for(int i=1;i<=n;i++)
{
//cout<<find(i)<<'\n';
if(find(i)==i)
{
ans++;
}
}
cout<<ksm(2ll,ans,mod)<<'\n';
}
signed main()
{
ios::sync_with_stdio(false);
cin.tie(0);
int tc=1;
cin>>tc;
while(tc--)
{
solve();
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3792kb
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: -100
Wrong Answer
time: 10ms
memory: 3572kb
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 1024 2 32 1024 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 4 512 ...
result:
wrong answer 2nd numbers differ - expected: '32768', found: '1024'