n=int(input())

OK=10**18
NG=0

while OK>NG+1:
    mid=(OK+NG)//2

    if mid*(mid+1)//2>=n:
        OK=mid
    else:
        NG=mid
    
if OK*(OK+1)//2:
    print("YES")
    print(OK)
else:
    print("NO")