#include <iostream>
#include <algorithm>


int main() {

	std::cin.tie(nullptr); std::ios::sync_with_stdio(false);
	int max = INT_MIN;
	int ans = 0;
	for (int i = 0; i < 5; i++) {
		int num;
		std::cin >> num;
		int ceiled = 10 * std::ceil(num / 10.f);
		max = std::max(max, ceiled - num);
		ans += ceiled;
	}

	std::cout << ans - max;


	return 0;


}