#include<stdio.h>
int main()
{
    float initial_bal;
    scanf("%.2f",&initial_bal);
    int n;
    scanf("%d",&n);
    float trans_a;
    scanf("%f",&trans_a);
    float trans_b;
    scanf("%f",&trans_b);
    float trans_c;
    scanf("%f",&trans_c);
    float final_balance;
    final_balance=initial_bal+trans_a+trans_b+trans_c;
    printf("%.2f",final_balance);
    return 0;
}