public class ss16 {
public static void main(String[] args) {
double sum = 0;
double[] num = new double[10];
Scanner input = new Scanner(System.in);
for (int i = 0; i < 10; i++) {
num[i] = input.nextDouble();
}
for (int j = 0; j < num.length; j++) {
sum = sum + num [j];
}
System.out.println(sum);
}
}