#!/usr/bin/env pypy3

import decimal
import math


def solve(n):
    n0 = decimal.Decimal(n)
    in_sq = 8 * n0 + 1
    sq_r = math.floor(math.sqrt(in_sq))
    if sq_r * sq_r != in_sq:
        return None
    d, m = divmod(sq_r - 1, 2)
    if m != 0:
        return None
    else:
        return int(d)


def main():
    decimal.getcontext().prec = 30
    res = solve(int(input()))
    if res is None:
        print("NO")
    else:
        print("YES")
        print(res)


if __name__ == '__main__':
    main()