Submission #1216017

#	Time	Username	Problem	Language	Result	Execution time	Memory
1216017		Captain_Georgia	Coins (IOI17_coins)	C++20	100 / 100	5 ms	588 KiB

coins

#include "coins.h"

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

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