#include <iostream>
using namespace std;

int main() {
    int arr[5],sum = 0;
    int *p = arr;
    for (int i = 0;i < 5;i++) {
        cin >> arr[i];
    }
    for (int i = 0;i < 5;i++) {
        sum += *(p+i);
    }
    cout << sum << endl;
}