Bit++ cf

#include <iostream>
#include <cstdio>
#include <string>
#include <cstring>
using namespace std;

int main() {
    int n,ans=0;
    string s;
    cin>>n;
    while(n--){
        cin>>s;
        if (s[0]==s[1]){
            if (s[0]=='+')
                ans++;
            else
                ans--;
        }
        else{
            if (s[1]=='+')
                ans++;
            else
                ans--;

        }
    }
    cout<<ans<<endl;
}