Submission #962596

#	Time	Username	Problem	Language	Result	Execution time	Memory
962596		biank	Coins (IOI17_coins)	C++14	100 / 100	9 ms	1988 KiB

coins

#include "coins.h"

using namespace std;

#define sz(x) int(x.size())

vector<int> coin_flips(vector<int> b, int c) {
    int x = 0;
    for (int i = 0; i < sz(b); i++) {
        if (b[i]) x ^= i;
    }
    return {x ^ c};
}

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

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