제출 #422272

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
422272		dreezy	Friend (IOI14_friend)	C++17	0 / 100	1 ms	300 KiB

friend

#include <bits/stdc++.h>
#include "friend.h"
using namespace std;


/*******************/
#define pi pair<int,int>
#define ll long long
#define f first
#define s second
#define pb push_back

int findSample(int n,int confidence[],int host[],int protocol[]){
	
	
	vector<bool> col(n,1);
	col[0] = 1;
	
	
	for(int i =1; i<n; i++){

		if(protocol[i] == 1){
			col[i] = col[host[i]];
			//cout << i <<", "<<host[i]<<endl;
		}
		else if(protocol[i] == 0){
			col[i] = !col[host[i]];
		}
	}
	int ans1=0, ans0=0;
	for(int i =0; i<n; i++){
		if(col[i]) ans1++;
		else ans0++;
	}
	
	return max(ans1, ans0);
}

/*******************/

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