Submission #650234

#	Time	Username	Problem	Language	Result	Execution time	Memory
650234		PoonYaPat	Coins (IOI17_coins)	C++14	100 / 100	11 ms	1556 KiB

coins

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

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

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

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