nmakeenkov

def get_easy_res(n):
    ans = 0
    for a in range(1, n):
        for b in range(1, n):
            for c in range(1, n):
                d = n - a - b - c
                if d <= 0 or a == b or a == c or a == d or b == c or b == d or c == d:
                    continue
                ans += 1
    return ans

nmakeenkov

def get_easy_res(n):
    ans = 0
    for a in range(1, n):
        for b in range(1, n):
            c = n - a - b
            if c <= 0 or a == b or a == c or b == c:
                continue
            ans += 1
    return ans
	

nmakeenkov

const val INF : Long = 1000 * 1000 * 1000 + 9

// n^k
fun pow(n: Long, k: Int): Long =
        when
        {
            k == 0 -> 1L
            (k % 2) == 0 ->
            {
                val x = pow(n, k / 2)