Submission #1219135

#	Time	Username	Problem	Language	Result	Execution time	Memory
1219135		takoshanava	Coins (IOI17_coins)	C++20	100 / 100	11 ms	744 KiB

coins

#include <bits/stdc++.h>
#include "coins.h"
//#define int long long 
#define pb push_back
#define fs first
#define sc second
using namespace std;

vector<int> coin_flips(vector<int> b, int c) {
    int x = 0;
    for(int i = 0; i <= 63; i++){
        if(b[i] == 1) x ^= i;
    }

    int y = c ^ x;
    vector<int> a;
    a.pb(y);
    return a;
}

int find_coin(vector<int> b){
    int y = 0;
    for(int i = 0; i <= 63; i++){
        if(b[i] == 1) y^= i;
    }
    return y;
}

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