Submission #1186965

#	Time	Username	Problem	Language	Result	Execution time	Memory
1186965		North1304	Coins (IOI17_coins)	C++20	100 / 100	6 ms	584 KiB

coins

#include "coins.h"
using namespace std;

vector<int> coin_flips(vector<int> b, int c) {
    int sum = 0;
    for (int i=0;i<b.size();i++) {
        if (b[i]==0) continue;
        sum ^= i;
    }
    return {sum ^ c};
}

int find_coin(vector<int> b) {
    int sum = 0;
    for (int i=0;i<b.size();i++) {
        if (b[i]==0) continue;
        sum ^= i;
    }
    return sum;
}

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