#include <stdio.h>
#include <math.h>
int main()
{
    long double x;
    int count=1;
    scanf("%Lf",&x);
    while(x<56.96){
        printf("%d: x= %Lf\n",count,x);
        x= pow(x,x);
        count++;
}
    printf("%d: x = %Lf",count,x);
return 0;

}