#include <stdio.h>

int main() {
    int avg = 0;
    for (int i=0; i<5; i++)
    {
        int temp=0;
        scanf("%d",&temp);
        if (temp<40)
            avg += 40;
        else
            avg += temp;
        
    }
    avg /=5;
    printf("%d\n",avg);
    return 0;
}