Submission #13525

#	Time	Username	Problem	Language	Result	Execution time	Memory
13525		gs14004	Friend (IOI14_friend)	C++14	100 / 100	45 ms	2256 KiB

friend

#include "friend.h"
#include <algorithm>
using namespace std;

int findSample(int n, int confidence[], int host[], int protocol[]){
    int ret = 0;
    for (int i=n-1; i>=0; i--) {
        if(protocol[i] == 1){
            confidence[host[i]] += confidence[i];
        }
        else if(protocol[i] == 2){
            confidence[host[i]] = max(confidence[host[i]],confidence[i]);
        }
        else{
            ret += confidence[i];
            confidence[host[i]] -= confidence[i];
            confidence[host[i]] = max(confidence[host[i]],0);
            // (a,b) -> (a-b,0) + b
        }
    }
    return ret += confidence[0];
}

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