N = int(input())

def check(n):
    return n*(n + 1)//2 >= N

ok = 10**18
ng = 0
while abs(ok - ng) != 1:
    mid = (ok + ng)//2
    if check(mid):
        ok = mid
    else:
        ng = mid

# 初めて以上になったところで一致するか？
if ok*(ok + 1)//2 == N:
    print('YES')
    print(ok)
else:
    print('NO')