def main():
    inp1 = int(input())

    count = 0
    num = inp1*2
    
    pre = int(pow((num),1/2))
    plf = pow(pre,2) + pre
    if plf == num:
        print("YES")
        print(pre)
    else:
        print("NO")
        


if __name__ == '__main__':
    main()