Submission #521028

#	Time	Username	Problem	Language	Result	Execution time	Memory
521028		FulopMate	Friend (IOI14_friend)	C++17	11 / 100	1090 ms	3908 KiB

friend

#include "friend.h"

#include <bits/stdc++.h>

using namespace std;

int findSample(int n, int confidence[], int host[], int protocol[]){
    bool v[10][10];
    for(int i = 0; i < n; i++){
        for(int j = 0; j < n; j++){
            v[i][j] = 0;
        }
    }
    for(int i = 0; i < 10; i++)v[i][i] = 1;
    for(int i = 1; i < n; i++){
        int h = host[i];
        if(protocol[i] == 0){
            v[h][i] = v[i][h] = 1;
        } else if(protocol[i] == 2){ // We
            for(int j = 0; j < n; j++){
                if(v[h][j]) v[i][j] = v[j][i] = 1;
            }
        } else { //MyFriends
            for(int j = 0; j < n; j++){
                if(j != h && v[h][j]) v[i][j] = v[j][i] = 1;
            }
        }
    }
    int r = 0;
    for(int i = 0; i < (1<<n); i++){
        int c = 0;
        for(int j = 0; j < n; j++){
            if(i & (1<<j))c += confidence[j];
        }
        bool b = 1;
        for(int j = 0; j < n; j++){
            for(int k = 0; k < n; k++){
                if(j != k && (i &(1<<j)) && (i &(1<<k)) && v[j][k])
                    b = 0;
            }
        }
        if(b)r = max(r, c);
    }
    return r;
}

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