import java.util.*;
import java.lang.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int[] input = new int[5];
		int[] roundUp = new int[5];
		int max = 0, index = 0, ans = 0;
 
		for(int i = 0; i < 5; i++){
			input[i] = sc.nextInt();
			roundUp[i] = (input[i] + 9) / 10 * 10;
			if(max < roundUp[i] - input[i]){
				max = roundUp[i] - input[i];
				index = i;
			}
		}
		for(int i = 0; i < 5; i++){
			ans += roundUp[i];
		}
		ans -= max;
		System.out.println(ans);
	}
}
