Submission #615013

#	Time	Username	Problem	Language	Result	Execution time	Memory
615013		cheissmart	Friend (IOI14_friend)	C++14	11 / 100	41 ms	3952 KiB

friend

#include "friend.h"
#include <bits/stdc++.h>
#define F first
#define S second
#define V vector
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define SZ(v) int((v).size())
#define ALL(v) (v).begin(), (v).end()

using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;

const int INF = 1e9 + 7, N = 10;

vi G[N];

int findSample(int n, int a[], int host[], int op[]) {
	for(int i = 1; i < n; i++) {
		if(op[i] == 0) {
			G[host[i]].PB(i);
			G[i].PB(host[i]);
		} else if(op[i] == 1) {
			for(int j:G[host[i]]) {
				G[j].PB(i);
				G[i].PB(j);
			}
		} else {
			for(int j:G[host[i]]) {
				G[j].PB(i);
				G[i].PB(j);
			}
			G[host[i]].PB(i);
			G[i].PB(host[i]);
		}
	}
	int ans = 0;
	for(int mask = 0; mask < (1 << n); mask++) {
		int sum = 0;
		for(int i = 0; i < n; i++)
			sum += (mask >> i & 1) ? a[i] : 0;
		bool bad = false;
		for(int i = 0; i < n; i++) if(mask >> i & 1)
			for(int j:G[i]) {
				if(mask >> j & 1)
					bad = true;
			}
		if(bad) continue;
		ans = max(ans, sum);
	}
	return ans;
}

• Subtask 1: 11 / 11
• Subtask 2: 0 / 8
• Subtask 3: 0 / 8
• Subtask 4: 0 / 19
• Subtask 5: 0 / 23
• Subtask 6: 0 / 31