# Program to Find nth Trimorphic Number 
 
rangenumber=int(input("Enter a Nth Number:"))
c = 0
letest = 0
num = 1
while c != rangenumber:
    flag = 0
    num1=num
    cube_power = num * num * num
    while num1 != 0:
        if num1 % 10 != cube_power % 10:
            flag = 1
            break
        num1 //= 10
        cube_power //= 10
    if flag == 0:
            c+=1
            letest = num

    num = num + 1
print(rangenumber,"th Trimorphic number is ",latest)