Submission #792276

#	Time	Username	Problem	Language	Result	Execution time	Memory
792276		fve5	Coins (IOI17_coins)	C++17	100 / 100	8 ms	1552 KiB

coins

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

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

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

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