N = int(input())

hi = 2 * 10**18
lo = -1

while hi - lo > 1:
    mid = (hi + lo) // 2
    if mid * (mid + 1) >= 2 * N:
        hi = mid
    else:
        lo = mid

if hi * (hi + 1) == 2 * N:
    print('YES')
    print(hi)

else:
    print('NO')