Submission #864223

#	Time	Username	Problem	Language	Result	Execution time	Memory
864223		abcvuitunggio	Coins (IOI17_coins)	C++17	100 / 100	10 ms	2192 KiB

coins

#include "coins.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> coin_flips(vector<int> b, int c) {
    for (int i=0;i<64;i++)
        if (b[i])
            c^=i;
    return {c};
}
 
int find_coin(vector<int> b) {
    return coin_flips(b,0)[0];
}

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