/*
Задание 4.
*/

#include <iostream>

using namespace std;

uint64_t getFactorial(int64_t number) {
    if (number == 0 || number == 1) {
        return 1;
    }
    return number * getFactorial(number - 1);
}

bool isPossible(uint64_t target) {
    uint64_t number = 2;
    while ((number - 1) * number * (number + 1) < target) {
        number++;
    }
    return (number - 1) * number * (number + 1) == target;
}

int main() {
    uint64_t number;
    cin >> number;

    uint64_t factorial = getFactorial(number);

    cout << boolalpha << isPossible(factorial);

    return 0;
}