Submission #677973

#	Time	Username	Problem	Language	Result	Execution time	Memory
677973		sysia	Coins (IOI17_coins)	C++17	100 / 100	11 ms	1552 KiB

coins

#include <bits/stdc++.h>
using namespace std;

vector<int> coin_flips(vector<int>b, int c){
    int x = 0;
    for (int i = 0; i<64; i++){
        if (b[i]){
            x ^= i;
        }
    }
    x ^= c;
    return vector<int>{x};
}

int find_coin(vector<int>b){
    int x = 0;
    for (int i = 0; i<64; i++){
        if (b[i]){
            x ^= i;
        }
    }
    return x;
}

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