QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#84166 | #5523. Graph Problem With Small $n$ | yx20220802 | TL | 2ms | 3640kb | C++14 | 1.9kb | 2023-03-05 20:42:01 | 2023-03-05 20:42:03 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
namespace IO_ER{
#define LL long long
#define db double
#define ULL unsigned long long
#define In inline
#define f(a,b,i) for(int i=a;i<=b;i++)
#define ff(a,b,i) for(int i=a;i<b;i++)
#define f_(a,b,i) for(int i=a;i>=b;i--)
#define ff_(a,b,i) for(int i=a;i>b;i--)
typedef pair<int,int> Pi;
int inf=0x3f3f3f3f;
int INF=0x7fffffff;
LL infll=0x3f3f3f3f3f3f3f3fll;
LL INFll=0x7fffffffffffffffll;
int FLAG_=0;
char CHAR=0;
template<typename T>void read(T &x){
FLAG_=0;
CHAR=getchar();
while(CHAR<'0'||'9'<CHAR){
if(CHAR=='-')FLAG_=1;
CHAR=getchar();
}
while('0'<=CHAR&&CHAR<='9'){
x=(x<<1)+(x<<3)+(CHAR^48);
CHAR=getchar();
}
x=FLAG_?-x:x;
}
template<typename T,typename ...Args>void read(T &x,Args &...args){
read(x);
read(args...);
}
}
using namespace IO_ER;
#define N 25
int n;
bitset<N>e[N];
bitset<N>dp[1<<N];
int main(){
read(n);
char s[N];
f(1,n,i){
scanf("%s",s+1);
f(1,n,j){
e[i-1].set(j-1,s[j]-'0');
}
}
// f(1,n,i){
// f(1,n,j){
// cout<<e[i-1][j-1]<<" ";
// }
// cout<<endl;
// }
int mx=(1<<n)-1;
f(1,n,st){
f(0,mx,i)dp[i].reset();
dp[1<<(st-1)].set(st-1,1);
// f(0,mx,s){
// f(1,n,i){
// cout<<dp[s][i-1]<<" ";
// }
// cout<<endl;
// }
f(0,mx,s){
if((s&(1<<(st-1)))==0)continue;
// cout<<s<<endl;
f(1,n,u){
if((s&(1<<(u-1)))==0)continue;
// cout<<s<<" "<<u<<" "<<(s^(1<<(u-1)))<<endl;
// f(1,n,i){
// cout<<dp[s^(1<<(u-1))][i-1]<<" ";
// }
// cout<<endl;
// f(1,n,i){
// cout<<e[u-1][i-1]<<" ";
// }
// cout<<endl;
// cout<<endl;
if((dp[s^(1<<(u-1))]&e[u-1]).any()){
dp[s].set(u-1,1);
}
}
}
f(1,n,ed){
if(dp[mx][ed-1])printf("1");
else printf("0");
}
// puts("");
puts("");
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3400kb
input:
4 0110 1010 1101 0010
output:
0001 0001 0000 1100
result:
ok 4 lines
Test #2:
score: 0
Accepted
time: 0ms
memory: 3424kb
input:
6 010001 101000 010100 001010 000101 100010
output:
010001 101000 010100 001010 000101 100010
result:
ok 6 lines
Test #3:
score: 0
Accepted
time: 2ms
memory: 3640kb
input:
4 0111 1011 1101 1110
output:
0111 1011 1101 1110
result:
ok 4 lines
Test #4:
score: -100
Time Limit Exceeded
input:
23 00000000000000000000000 00000000000000000000000 00000000000000000000000 00000000000000000000000 00000000000000000000000 00000000000000000000000 00000000000000000000000 00000000000000000000000 00000000000000000000000 00000000000000000000000 00000000000000000000000 00000000000000000000000 000000000...