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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#718509 | #7900. Gifts from Knowledge | shuanglin | WA | 15ms | 3616kb | C++20 | 2.7kb | 2024-11-06 20:42:38 | 2024-11-06 20:42:39 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define lowbit(x) ((x) & - (x))
using PII = pair<int, int>;
using PIII = tuple<int, int, int>;
const int MOD = 1e9 + 7;
inline int mypow(int n, int k, int p = MOD) {
int r = 1;
for (; k; k >>= 1, n = n * n % p) {
if (k & 1) r = r * n % p;
}
return r;
}
struct cmp { //priority_queue
bool operator()(const PIII& a, const PIII& b) {
return std::get<0>(a) < std::get<0>(b); //down
}
};
bool cmpsort(const PII& a, const PII& b) { //sort
return a.first < b.first; //up
}
int num[1000010]={0};
int fd(int k){ //find()
//路径压缩
if(num[k]==k)return k;
return num[k]=fd(num[k]);
//相当于num[k]=fd(num[k]); return num[k];
}
int n,m;
vector <string> mp;
string str;
inline void solve() {
cin>>n>>m;
for(int i=0;i<2*n;i++){
num[i]=i;
}
for(int i=0;i<n;i++){
cin>>str;
mp.push_back(str);
}
int F=0;
if(m%2==1){
int cnt=0;
for(int i=0;i<n;i++){
if(mp[i][m/2]=='1'){
cnt++;
}
}
if(cnt>=2){
cout<<0<<'\n';
return ;
}
}
for(int j=0;j<m/2;j++){
int cnt=0;
int f1=-1;
int f2=-1;
for(int i=0;i<n;i++){
if(mp[i][j]=='1'||mp[i][m-1-j]=='1'){
cnt++;
if(f1==-1)f1=i;
else f2=i;
}
}
if(cnt==2){
if(mp[f1][j]=='1'&&mp[f2][j]=='1'||mp[f1][m-j-1]=='1'&&mp[f2][m-j-1]=='1') F=1;
}
if(cnt>2){
cout<<0<<'\n';
return ;
}
else if(cnt==1) continue;
else{
if(F==1){
if(fd(f1)!=fd(f2+n)){
num[fd(f1)]=fd(f2+n);
}
if(fd(f1+n)!=fd(f2)){
num[fd(f1+n)]=fd(f2);
}
}
else{
if(fd(f1)!=fd(f2)){
num[fd(f1)]=fd(f2);
}
if(fd(f1+n)!=fd(f2+n)){
num[fd(f1+n)]=fd(f2+n);
}
}
}
}
for(int i=0;i<n;i++){
if(fd(i)==fd(i+n)){
cout<<0<<'\n';
return ;
}
}
map<int,int> e;
for(int i=0;i<2*n;i++){
e[num[i]]++;
}
int ans=e.size()/2;
cout<<mypow(2,ans)<<'\n';
}
signed main() {
ios::sync_with_stdio(0), cin.tie(0); cout.tie(0);
//cout << fixed << setprecision(12);
int t = 1;
cin >> t;
while (t--) {
solve();
mp.clear();
for(int i=0;i<=2*n;i++){
num[i]=0;
}
}
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 3608kb
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: 15ms
memory: 3616kb
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: 15ms
memory: 3560kb
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 8 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 8192 0 512 32 2048 8 16 1024 2048 128 64 32 8 512 8 8192 256 8192 32768 2 8 512 256 256 32 2 2048 8192 8 64 8 2 16384 32768 32768 1024 4096 16384 16384 128 256 4 1...
result:
wrong answer 2nd numbers differ - expected: '16', found: '8'