Submission #988887

#	Time	Username	Problem	Language	Result	Execution time	Memory
988887		gutzzy	Coins (IOI17_coins)	C++17	0 / 100	5 ms	1696 KiB

coins

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

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

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

• Subtask 1: 0 / 10
• Subtask 2: 0 / 15
• Subtask 3: 0 / 10
• Subtask 4: 0 / 15
• Subtask 5: 0 / 50