#include <iostream>
#include <vector>
using namespace std;

int main() {
    vector<string> str
    str.resize(4);
    int result = 0;
    for (int i = 0; i < 4; ++i) {
       cin >> str[i]
      if (str[i] == “+”) {
          result++;
       }
       if (str[i] == “-“) {
          result = result - 1;
       }
    }
    std::cout << result << std::endl;
    return 0;
}
