#include <stdio.h>
#include<ctype.h>
#include<math.h>
int main()
{
    double x=0;
    long double value =0;
    int count =0;
    long double arr[50]={0};
  	
  	
	if(scanf("%lf",&x)!=1){
  		printf("Nepodarilo sa nacitat x\n");  
    	return 0;
  	}
  	int r =0;
    while((r=scanf("%Lf",&value)!=EOF)&&r==1){   
        arr[count]=value;
        count++;
    }
    value=0;
  	if(r==1){
    	for(int i =0;i<count&&count-1-i>=0;i++){
    	    value+=(long double)(arr[i]*pow(x,count-1-i));
    	}
    }
  	if(value>=40000&&value<=1000000){
    	value =((int)(value*100 - 0.5)/100.00);
    }
    printf("Vysledok je :%.2Lf\n",value);
    

    return 0;
}