# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1158789 | modwwe | Coins (IOI17_coins) | C++20 | 0 ms | 0 KiB |
#include "coin.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;
}