#include<bits/stdc++.h>
typedef long long ll;
using namespace std;
template<typename T>void re(T&x){
	x = 0; int sign = 1; char c;
	do{c = getchar(); if (c == '-') sign = -1;}while(!isdigit(c));
	do{x = x * 10 + c - '0'; c = getchar();}while(isdigit(c));
	x *= sign;
}
int read(){
	int x = 0; int sign = 1; char c;
	do{c = getchar(); if (c == '-') sign = -1;}while(!isdigit(c));
	do{x = x * 10 + c - '0'; c = getchar();}while(isdigit(c));
	x *= sign;
	return x;
}
int n, ans;
int main(){
	n = read();
	for (int i = 1; i <= n; i ++) ans += read();
	printf("%d", ans);
	return 0;
}