n = int(input())

def is_ok(x):
    if x*(x+1)//2 >= n:
        return True
    else:
        return False

l = 0
r = 2*10**9
while l+1 < r:
    c = (l+r)//2
    if is_ok(c):
        r = c
    else:
        l = c

if r*(r+1)//2 == n:
    print('YES')
    print(r)
else:
    print('NO')