import sys

N = int(input())

# x(x+1)/2 = N
# 4x^2+4x+1 = 8N+1

M = 8 * N + 1

sq = int(M**.5)
while (sq+1)**2 <= M:
    sq += 1

if sq * sq == M:
    print('YES')
    print((sq-1)//2)
else:
    print('NO')