Submission #649599

#	Time	Username	Problem	Language	Result	Execution time	Memory
649599		Hydrolyzed	Coins (IOI17_coins)	C++14	100 / 100	12 ms	1576 KiB

coins

#include "coins.h"
#include <vector>

using namespace std;

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

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

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