#include<iostream>
#include<vector>
#include<string>

using namespace std;

int main(){
    long long numberOfInput,totalNumber=0;
    int i;
    cin >> numberOfInput;

    vector<long long>addedNumber(numberOfInput);
    for(i=0;i<numberOfInput;i++){
	cin >> addedNumber[i];
	totalNumber += addedNumber[i];
    }
    cout << totalNumber << endl;
}