Submission #1027557

#	Time	Username	Problem	Language	Result	Execution time	Memory
1027557		dozer	Friend (IOI14_friend)	C++14	8 / 100	1 ms	604 KiB

friend

#define __MAXSIZE__ 100002
#include "friend.h"
#include <bits/stdc++.h>
using namespace std;
#define sp " "
#define endl "\n"
#define pb push_back
#define pii pair<int, int>
#define st first
#define nd second
#define mid (l + r) / 2
#define LL node * 2
#define RR node * 2 + 1
#define fileio() freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout)
#define fastio() cin.tie(0), ios_base::sync_with_stdio(0)
#define ll long long
#define MAXN 200005


const int modulo = 1e9+7;
const ll INF = 2e18 + 7;


// Find out best sample
int findSample(int n,int confidence[],int host[],int protocol[]){
	int ans=0;
	vector<int> group(n);
	int sz[] = {0, 0};
	group[0] = 0;
	sz[0] = confidence[0];
	for (int i = 1; i < n; i++){
		group[i] = group[host[i]] ^ 1 ^ protocol[i];
		sz[group[i]] += confidence[i];
	}
	return max(sz[0], sz[1]);
}

/*
// Confidence
int confidence[__MAXSIZE__];

// Host
int host[__MAXSIZE__];

// Protocol
int protocol[__MAXSIZE__];

// Main
int main(void)
{
	fileio();
	int n,i;

	// Number of people
	assert(scanf("%d",&n)==1);
	
	// Confidence
	for(i=0;i<n;i++)
		assert(scanf("%d",&confidence[i])==1);
	
	// Host and Protocol
	for(i=1;i<n;i++)
		assert(scanf("%d %d",&host[i],&protocol[i])==2);
	
	// Answer
	printf("%d\n",findSample(n,confidence,host,protocol));
	return 0;
}
*/

Compilation message (stderr)

friend.cpp: In function 'int findSample(int, int*, int*, int*)':
friend.cpp:26:6: warning: unused variable 'ans' [-Wunused-variable]
   26 |  int ans=0;
      |      ^~~

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