#include <iostream>
using namespace std;
int main(void){
    int i, N;
    scanf("%d", &N);
    long double A[N], B;
    B = 0;
    for(i = 0; i < N; i++){
        scanf("%Lf\n", &A[i]);
        B += A[i];
    }
    printf("%.0Lf\n", B);
    return 0;
}