10000000 0

#include <cstdio>
#include <cstring>
#include <limits>
#include <sys/mman.h>
using namespace std;

static constexpr size_t buf_size = 134217728;
static constexpr size_t integer_size = 10;

char *inbuf;

inline void load() {
	inbuf = (char*) mmap(nullptr, 0x7000000, PROT_READ, MAP_PRIVATE, 0, 0);
	// inbuf[end] = '\0';
}
inline char get_next() { return *inbuf++; }
template<class T>
void scan(T &x) {
	char c = get_next();
    x = c - '0';
	while ((c = get_next()) >= '0')
		x = x * 10 + c - '0';
}

int main()
{
	int x = 1e7, y;
	ll res = 0;
	
	load();
	scan(x)
	while (x--)
	{
		scan(y);
		res += y;
	}
    printf("%lld", res);
	
	return 0;
}