rt.

#include <iostream>
using namespace std;

template<typename T>inline void read(T &x)
{
    bool f = 1; x = 0; char ch = getchar();
    while (ch < '0' || ch > '9') { if (ch == '-') f = !f; ch = getchar(); }
    while (ch >= '0' && ch <= '9') { x = (x << 1) + (x << 3) + (ch ^ 48); ch = getchar();}
    x = (f ? x : -x); return;
}

template<typename T>inline void write(T x)
{
    if (x < 0) putchar('-'), x = -x;
    if (x > 9) write(x / 10);
    putchar(x % 10 + '0'); return;
}

int main()
{
	int n; read(n);
	int ans = 0;
	for (int i = 1; i <= n; i++)
	{
		int x; read(x);
		ans += x;
	}
	write(ans);
	return 0;
}