#include <bits/stdc++.h>
using namespace std;
int n;
long long ans;
int t;
int read(){
	int k=1,ans=0;
	char s=getchar();
	while(s<'0'||s>'9'){
		if(s=='-')k=-1;
		s=getchar();
	}
	while(s>='0'&&s<='9'){
		ans=ans*10+s-'0';
		s=getchar();
	}
	return k*ans;
}
void write(long long x){
	if(x<0)putchar('-'),x=-x;
	if(x>9)write(x/10);
	putchar(x%10+'0');
}
int main() {
	n=read();
	while(n--){
		t=read();
		ans+=t;
	}
	write(ans);
	return 0;
}