#include<stdio.h>
#include<conio.h>

float f(float a, float b, float c) {
    return (4 * b + 5 * c) / a;
}

int main() {
    float s, t;
    printf("Introduceti s si t:\n");
    scanf("%f %f", &s, &t);
    
    printf("\nRezultatul: %.2f", f(2 * t, 3 * t, s) + f(2.5, s + 1, t));
    
    getch();
    return 0;
}