import java.util.*;

public class Main {
    public static void main(final String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] order = new int[5];
        for (int i = 0; i < 5; i++) {
            order[i] = sc.nextInt();
        }
        
        int[] time = new int[5];
        for(int i = 0; i < 5; i++) {
            time[i] = (order[i] / 10) * 10 + (order[i] % 10 != 0 ? 10 : 0);
        }
        int max = 0;
        int ans = 0;
        for(int i = 0; i < 5; i++) {
            max = Math.abs(time[i] - order[i]) > max ? Math.abs(time[i] - order[i]) : max;
            ans += time[i];
        }
        System.out.println(ans - max);
    }
}