#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
#define pb push_back
#define mp make_pair
#define f first
#define s second
#define forn(i, n) for (int i = 0; i < int(n); i++)
#define in insert
#define all(x) (x).begin(), (x).end()
#define speed ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
const int INF = 1e9 + 5;
int main(){
    int cnt = 0;
    string s;
    cin >> s;
    for(int i = 0; i < s.size(); i++){
        if(s[i] == '+') cnt+;
        else cnt--;
    }
    cout << cnt;
}