[C++] 백준 3052 나머지

#include <iostream>
using namespace std;

int main() {

	int arr[42] = { 0 };
	int n, res = 0;

	for (int i = 0; i < 10; i++) {
		cin >> n;
		if (arr[n % 42] == 0) res++, arr[n % 42] = 1;
	}
	cout << res;

	return 0;
}