Submission #1158790

#	Time	Username	Problem	Language	Result	Execution time	Memory
1158790		modwwe	Coins (IOI17_coins)	C++20	100 / 100	8 ms	740 KiB

coins

#include "coins.h"
#include<bits/stdc++.h>
std::vector<int> coin_flips(std::vector<int> b,int c)
{
    for(int i=0; i<b.size(); i++)
        c=c^(b[i]*i);
    return {c};
}
int find_coin(std::vector<int> b)
{
    int x=0;
    for(int i=0; i<b.size(); i++)x=x^(b[i]*i);
    return x;
}

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