#include <stdio.h>
#include<ctype.h>
#include<math.h>
int main()
{
    float x=0;
    float value =0;
    int count =0;
    float arr[50];
  	scanf("%f",&x);
    while(scanf("%f",&value)!=EOF){
        if(isalpha(value)!=0){
            return 0;
        }
        arr[count]=value;
        count++;
    }
    value=0;
    for(int i =0;i<count;i++){
        value+=arr[i]*pow(x,count-1-i);
    }
  
  	if(value>=40000){
    	value =((int)(value*100 - 0.5)/100.00);
    }
    printf("Vysledok je :%.2f\n",value);
    

    return 0;
}