Submission #1219161

#	Time	Username	Problem	Language	Result	Execution time	Memory
1219161		checker1234	Coins (IOI17_coins)	C++20	100 / 100	5 ms	584 KiB

coins

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

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

int find_coin(vector<int> b)
{
    int x=0;
    for(int i=0;i<64;i++)if(b[i]==1)x^=i;
    return x;
}

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