#include<stdio.h>
int isArmstrong(int num){
    int temp=num,rem,sum=0;
    while(temp!=0){
    rem=temp%10;
    sum=sum+rem*rem*rem;
    temp=temp/10;
    }
    return(sum==num);
}
int main(){
    int num;
    scanf("%d",&num);
    if(isArmstrong(num))
    printf("%d",num)
    else
    printf("%d",num);
    return 0;
}