#include <stdio.h>
int main() {
int a, b, c, d, e, max, min,sum;
scanf("%d%d%d%d%d", a, b, c, d, e);
max = a, min = e;
if (b > max) max = b;
if (c > max) max = c;
if (e > max) max = e;
if (d > max) max = d;
if (a < min) min = a;
if (b < min) min = b;
if (c < min) min = c;
if (d < min) min = d;
sum=max+min;
printf("%d",sum);
}