bit++ codeforces in c++
#include <iostream>
#include <string>
int main() {
int n;
std::cin >> n;
int x = 0;
for (int i = 0; i < n; ++i) {
std::string operation;
std::cin >> operation;
if (operation == "X++" || operation == "++X") {
++x;
} else if (operation == "X--" || operation == "--X") {
--x;
}
}
std::cout << x << std::endl;
return 0;
}