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

int main(void){
	double lundi;
	double mardi;
	double mercredi;
	double jeudi;
	double vendredi;
	printf("Renseignez les clients : ");
	scanf("%lf", &lundi);
	printf("Renseignez les clients : ");
	scanf("%lf", &mardi);
	printf("Renseignez les clients : ");
	scanf("%lf", &mercredi);
	printf("Renseignez les clients : ");
	scanf("%lf", &jeudi);
	printf("Renseignez les clients : ");
	scanf("%lf", &vendredi);
	double valfinal = 0;
	valfinal = valfinal + lundi + mardi + mercredi + jeudi + vendredi ;
	valfinal = valfinal / 5;
	printf("%lf", valfinal);
	return EXIT_SUCCESS;
}