A. Bit++【水题】

https://codeforces.com/problemset/problem/282/A

#include<bits/stdc++.h>
using namespace std;
int t;
string s;
int ans;
int main(void)
{
	cin>>t;
	while(t--) 
	{
		cin>>s;
		if(s.find("+")!=-1) ans++;
		else ans--;
	}
	cout<<ans;
	return 0;
}