Submission #974149

#	Time	Username	Problem	Language	Result	Execution time	Memory
974149		hirayuu_oj	Coins (IOI17_coins)	C++17	100 / 100	7 ms	1700 KiB

coins

#include "coins.h"
#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0; i<n; i++)

std::vector<int> coin_flips(std::vector<int> b, int c) {
    std::vector<int> flips(1);
    int num=0;
    rep(i,64){
        if(b[i])num^=i;
    }
    flips[0]=c^num;
    return flips;
}

int find_coin(std::vector<int> b) {
    int num=0;
    rep(i,64){
        if(b[i])num^=i;
    }
    return num;
}

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 10 / 10
• Subtask 4: 15 / 15
• Subtask 5: 50 / 50