QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#543441 | #7900. Gifts from Knowledge | New_Folder# | WA | 8ms | 5888kb | C++20 | 1.5kb | 2024-09-01 16:50:15 | 2024-09-01 16:50:17 |
Judging History
answer
#pragma GCC optimize(2)
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
int head[1000001];
int vis[1000001];
int tot=0;
ll mod=1e9+7;
vector<int> vec[1000001];
ll fastpow(ll base,ll po){
ll ans=1;
while(po){
if(po&1){
ans*=base;
ans%=mod;
}
base*=base;
base%=mod;
po>>=1;
}
return ans;
}
struct chainforwardstar{
int to,next;
}e[2000001];
int r,c;
void addedge(int from,int to){
e[++tot].next=head[from];
head[from]=tot;
e[tot].to=to;
}
int cnt[1000001];
void dfs(int x){
vis[x]=1;
for(int i=head[x];i;i=e[i].next){
int to=e[i].to;
if(!vis[to]){
dfs(to);
}
}
}
void solve(){
cin>>r>>c;
string s;
for(int p=1;p<=r;p++){
cin>>s;
for(int i=0;i<c;i++){
if(s[i]=='1'){
cnt[i+1]++;
cnt[c-i]++;
int idx=min(i+1,c-i);
vec[idx].push_back(p);
}
}
}
for(int i=1;i<=c;i++){
if(cnt[i]>2){
cout<<0<<'\n';
return;
}
}
for(int i=1;i<=c;i++){
if(vec[i].size()>=2){
addedge(vec[i][0],vec[i][1]);
addedge(vec[i][1],vec[i][0]);
}
}
ll cnt=0;
for(int i=1;i<=r;i++){
if(!vis[i]){
dfs(i);
cnt++;
}
}
cout<<fastpow(2LL,cnt)<<'\n';
}
int main(){
std::ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int t;
cin>>t;
while(t--){
solve();
for(int i=1;i<=r;i++){
head[i]=0;
vis[i]=0;
}
for(int i=1;i<=c;i++){
cnt[i]=0;
vec[i].clear();
}
tot=0;
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 2ms
memory: 5692kb
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: 8ms
memory: 5632kb
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: 8ms
memory: 5888kb
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'