op-dispatcher-1

#include <iostream>
#include "func.h"

int main() {
    int n; std::cin >> n;
    int a = 0;
    while (n--) {
        char k; int number; std::cin >> k >> number;
        if (k == '-') {
            a = dif(a, number);
        } else {
            a = sum(a, number);
        }
    }
    std::cout << a << '\n';
}