답안 #742207

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
742207	2023-05-15T19:10:42 Z	sword060	Logičari (COCI21_logicari)	C++17	20 / 110	57 ms	340 KB

Main

#include <bits/stdc++.h>
using namespace std;
int main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int x; cin>>x;
	if(x>20){
		cout<<(x%4?-1:x/2);
		return 0;
	}
	vector<int>v[x];
	for(int i=1;i<=x;i++){
		int l,r;cin>>l>>r;
		l--;r--;
		v[l].push_back(r);
		v[r].push_back(l);
	}
	int ans=1e9;
	for(int i=1;i<(1<<x);i++){
		bool f=1;
		for(int j=0;j<x;j++){
			int cnt=0;
			for(auto c:v[j])
				if(i&(1<<c))cnt++;
			f&=(cnt==1);
		}
		if(f)
			ans=min(ans,__builtin_popcount(i));
	}
	cout<<(ans==1e9?-1:ans);
	return 0;
}

Subtask #1

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	316 KB	Output is correct
3	Correct	1 ms	320 KB	Output is correct
4	Correct	0 ms	324 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	0 ms	328 KB	Output is correct

Subtask #2

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	45 ms	212 KB	Output is correct
2	Correct	45 ms	212 KB	Output is correct
3	Correct	47 ms	332 KB	Output is correct
4	Correct	48 ms	308 KB	Output is correct
5	Correct	0 ms	316 KB	Output is correct
6	Correct	21 ms	320 KB	Output is correct
7	Correct	0 ms	320 KB	Output is correct
8	Correct	11 ms	316 KB	Output is correct
9	Correct	48 ms	212 KB	Output is correct
10	Correct	57 ms	260 KB	Output is correct
11	Correct	6 ms	320 KB	Output is correct
12	Correct	47 ms	296 KB	Output is correct

Subtask #3

0 / 40.0

#	결과	실행 시간	메모리	Grader output
1	Correct	45 ms	212 KB	Output is correct
2	Correct	45 ms	212 KB	Output is correct
3	Correct	47 ms	332 KB	Output is correct
4	Correct	48 ms	308 KB	Output is correct
5	Correct	0 ms	316 KB	Output is correct
6	Correct	21 ms	320 KB	Output is correct
7	Correct	0 ms	320 KB	Output is correct
8	Correct	11 ms	316 KB	Output is correct
9	Correct	48 ms	212 KB	Output is correct
10	Correct	57 ms	260 KB	Output is correct
11	Correct	6 ms	320 KB	Output is correct
12	Correct	47 ms	296 KB	Output is correct
13	Incorrect	1 ms	212 KB	Output isn't correct
14	Halted	0 ms	0 KB	-

Subtask #4

0 / 50.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	316 KB	Output is correct
3	Correct	1 ms	320 KB	Output is correct
4	Correct	0 ms	324 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	0 ms	328 KB	Output is correct
9	Correct	45 ms	212 KB	Output is correct
10	Correct	45 ms	212 KB	Output is correct
11	Correct	47 ms	332 KB	Output is correct
12	Correct	48 ms	308 KB	Output is correct
13	Correct	0 ms	316 KB	Output is correct
14	Correct	21 ms	320 KB	Output is correct
15	Correct	0 ms	320 KB	Output is correct
16	Correct	11 ms	316 KB	Output is correct
17	Correct	48 ms	212 KB	Output is correct
18	Correct	57 ms	260 KB	Output is correct
19	Correct	6 ms	320 KB	Output is correct
20	Correct	47 ms	296 KB	Output is correct
21	Incorrect	1 ms	212 KB	Output isn't correct
22	Halted	0 ms	0 KB	-