#include<bits/stdc++.h>
using namespace std;
inline int read() {
	int x=0,f=1;
	char ch=getchar();
	while(ch<'0'||ch>'9') {
		if(ch=='-')
			f=-1;
		ch=getchar();
	}
	while(ch>='0'&&ch<='9')
		x=x*10+ch-'0',ch=getchar();
	return x*f;
}
int main() {
	int n=read(),a,ans=0;
	for(int i=1; i<=n; i++) {
		a=read();
		ans+=a;
	}
	cout<<ans;
	return 0;
}