#include <cstdio>
#include <cstdlib>
#include <cstddef>
#include <vector>
#include <algorithm>
#include <cmath>
#include <cstring>
#include <string>
#include <iostream>
#include <iomanip>
#include <numeric>
#define L64 long long
#define MOD (998244353LL)

int main(void)
{
  L64 n, b;
  b = 0;
  std::cin >> n;
  for (int i = 1; i <= n; i++){
    L64 a; std::cin >> a;
    b += a;
  }
  std::cout << b << std::endl;
}