#include <stdio.h>
#include <stdlib.h>

#define MAX_COEFFICIENTS 100

double evaluate_polynomial(double x, double coefficients[], int degree) {
    double result = 0;
    for (int i = degree; i >= 0; i--) {
        result = result * x + coefficients[i];
    }
    return result;
}

int main() {
    double x;
    double coefficients[MAX_COEFFICIENTS];
    int degree;

    // Read the value of x
    if (scanf("%lf", &x) != 1) {
        printf("Error: Failed to read the value of x.\n");
        return 1;
    }

    // Read the coefficients of the polynomial
    int coefficient_number = 1;
    while (scanf("%lf", &coefficients[coefficient_number - 1]) == 1) {
        coefficient_number++;
        if (coefficient_number > MAX_COEFFICIENTS) {
            printf("Error: Too many coefficients.\n");
            return 1;
        }
    }

    degree = coefficient_number - 2; // degree of polynomial = number of coefficients - 1

    // Check if at least one coefficient is loaded
    if (degree < 0) {
        printf("Error: No coefficients loaded.\n");
        return 1;
    }

    // Evaluate the polynomial
    double result = evaluate_polynomial(x, coefficients, degree);

    // Print the result rounded to two decimal places
    printf("The output is: %.2lf\n", result);

    return 0;
}