Submission #1032111

#	Time	Username	Problem	Language	Result	Execution time	Memory
1032111		tolbi	Friend (IOI14_friend)	C++17	11 / 100	16 ms	2640 KiB

friend

#define tol(bi) (1LL<<((int)(bi)))
#include "friend.h"
#include <bits/stdc++.h>
using namespace std;
// Find out best sample
int findSample(int n,int confidence[],int host[],int protocol[]){
	if (n<=10){
		vector<vector<int>> arr(n);
		for (int i = 1; i < n; i++){
			if (protocol[i]==0){
				arr[host[i]].push_back(i);
				arr[i].push_back(host[i]);
			}
			else if (protocol[i]==1){
				for (auto &fr : arr[host[i]]){
					arr[fr].push_back(i);
					arr[i].push_back(fr);
				}
			}
			else {
				for (auto &fr : arr[host[i]]){
					arr[fr].push_back(i);
					arr[i].push_back(fr);
				}
				arr[host[i]].push_back(i);
				arr[i].push_back(host[i]);
			}
		}
		int ret = 0;
		for (int i = 0; i < tol(n); i++){
			int cur = 0;
			for (int j = 0; j < n; j++){
				if (tol(j)&i){
					cur+=confidence[j];
					for (auto &nex : arr[j]){
						if (tol(nex)&i){
							cur=0;
							break;
						}
					}
					if (cur==0) break;
				}
			}
			ret=max(ret,cur);
		}
		return ret;
	}
	return 23;
}

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