10000000 0

#include <bits/stdc++.h>
using namespace std;

#define gc getchar_unlocked
#define pc putchar_unlocked
int read() {
	int a = 0; char c;
	for (c = gc(); !isdigit(c); c = gc());
	while (isdigit(c)) a = (a << 3) + (a << 1) + (c & 15), c = gc();
	return a;
}
void read(int & a) {
	a = read();
}
void put(long long x) {
	static char b[39];
	int i = 0; do b[i++] = x % 10 | 48; while (x /= 10);
	do pc(b[--i]); while (i);
}

int n;

int main() {
	ios::sync_with_stdio(false);
	long long x = 0; read(n); while (n--) x += read();
	put(x);
}