#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <ctype.h>
#define MAX_I_LINE_LENGTH 256
int main(){
    char line[MAX_I_LINE_LENGTH];
    int cfIdx = 0;
    double x, cf,result = 0;
    fgets(line, 100, stdin);
    x = strtod(line, NULL);
    while(line[0] != '\n'){
        result = result * x + cf;
        fgets(line, 100, stdin);
        cf = strtod(line,NULL);
    }
    printf("Vysledok je: %.2f\n", result);
    return 0;

}