Submission #331994

#	Time	Username	Problem	Language	Result	Execution time	Memory
331994		wind_reaper	Coins (IOI17_coins)	C++17	100 / 100	14 ms	1792 KiB

coins

#include "coins.h"
#include <bits/stdc++.h>

using namespace std; 

#define pb push_back 
vector<int> coin_flips(vector<int> b, int c) {    
    vector<int> ret; 
    int x = 0; 
    for(int i = 0; i < 64; i++) if(b[i]) x ^= i; 
    ret.push_back(x^c); 
    return ret; 
}

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

    return x; 
}

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