#include <stdio.h>
#include <stdlib.h>

int main() {
    FILE* f = fopen("adunare.in", "r");
    FILE* out = fopen("adunare.out", "w+");

    if (!f || !out)
        return 0;

    long sum = 0;
    long n;

    while (fscanf(f, "%ld ", &n) == 1)
        sum += n;

    fclose(f);

    fprintf(out, "%ld\n", sum);
    fclose(out);
    return 0;
}