Submission #718854

#	Time	Username	Problem	Language	Result	Execution time	Memory
718854		lam	Coins (IOI17_coins)	C++14	100 / 100	11 ms	1552 KiB

coins

#include "coins.h"
#include <bits/stdc++.h>
using namespace std;
std::vector<int> coin_flips(std::vector<int> b, int c) {
    std::vector<int> flips(1);
    int sum=0;
    for (int i=0; i<64; i++) if (b[i]) sum^=i;
    sum^=c;
    flips[0] = sum;
    return flips;
}

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

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