Submission #1100404

#	Time	Username	Problem	Language	Result	Execution time	Memory
1100404		akzytr	Coins (IOI17_coins)	C++17	100 / 100	9 ms	1848 KiB

coins

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define pb push_back
#define fi first
#define se second
#define endl '\n'

vector<int> coin_flips(vector<int> b, int c) {
    ll k = 0;

	for(int i = 0; i < 64; i++){
        if(b[i]){
            k ^= i;
        }
    }
    vector<int> turn;
    turn.pb(k ^ c);
	return turn;
}

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

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