Bit++

模拟

#include <iostream>#include <cstdio>#include <vector>#include <cstring>#define MAX 1005using namespace std; int n;int main(){    ///freopen("in.txt","w",stdout);    cin>>n;    getchar();    int ans = 0;    char s[MAX];    for(int i = 0; i < n; i++){        gets(s);        if(s[1] == '-'){            ans --;        }else if(s[1] == '+'){            ans ++;        }    }    cout<<ans<<endl;}