Submission #1221787

#	Time	Username	Problem	Language	Result	Execution time	Memory
1221787		vladilius	Coins (IOI17_coins)	C++20	100 / 100	5 ms	588 KiB

coins

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define pb push_back
#define ff first
#define ss second

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

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

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