Submission #78276

#	Time	Username	Problem	Language	Result	Execution time	Memory
78276		triplem5ds	Friend (IOI14_friend)	C++14	100 / 100	64 ms	7156 KiB

friend

#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")

#include "friend.h"
#include <bits/stdc++.h>

using namespace std;

using ll = long long;

const int N = 1e5 +5;
int ans[N];
int findSample(int n, int confidence[], int host[], int protocol[]){
    for(int i = 0; i < n; i++)
        ans[i] = confidence[i];

    int ret = 0;

    for(int i = n - 1; i ; --i){

        if(protocol[i] == 0){
            ret += ans[i];
            ans[host[i]] -= ans[i];
            if(ans[host[i]] < 0)
                ans[host[i]] = 0;
            }   else if(protocol[i] == 1){
                ans[host[i]] += ans[i];
            }   else {
                if(ans[i] > ans[host[i]])
                    ans[host[i]] = ans[i];
            }
    }

    ret += ans[0];
    return ret;
}

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