Submission #964343

#	Time	Username	Problem	Language	Result	Execution time	Memory
964343		bachhoangxuan	Coins (IOI17_coins)	C++17	100 / 100	9 ms	1808 KiB

coins

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

std::vector<int> coin_flips(std::vector<int> b, int c) {
    vector<int> flips(1);
    for(int i=0;i<64;i++) if(b[i]) c^=i;
    flips[0]=c;
    return flips;
}

int find_coin(std::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