Submission #648019

#	Time	Username	Problem	Language	Result	Execution time	Memory
648019		dutinmeow	Coins (IOI17_coins)	C++17	100 / 100	9 ms	1552 KiB

coins

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

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

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

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