//此题为洛谷P1089 
#include <iostream>
using namespace std;
int main()
{
	int sum = 0,f = 0,sf = 0,sf1 = 0;  
	int arr[13];
	for (int i = 1;i <= 12;i++){
		cin >> arr[i];
	} 
	for (int j = 1;j <= 12;j++){
		sum += 300;
		if (sum < arr[j]){
			cout << '-' << arr[j];
			return 0; 
		}
		sum -= arr[j];
		if (sum / 100 != 0){
			f = sum / 100;
			sf  = sf + f;
			sum = sum - f * 100;
			f = 0;
		}
	}
	sf1 = sf * 0.2;	
	cout << sum + sf * 100 + sf1;
	return 0;
}