#include<bits/stdc++.h>
using namespace std;
#define el "\n"
#define ll long long
#define ull unsigned long long
#define se second
#define fi first
#define be begin()
#define en end()
#define Faster cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);
 
int main()
{
    Faster;
    string s; cin >> s;
    for(auto &x : s)
    {
        if(x != '*') x = ' ';
    }
    stringstream ss(s);
    int ans = 0;
    string x;
    while(ss >> x)
    {
        ans += x.size()* (x.size() + 1) / 2;
    }
    cout << ans;
    return 0;
}
 

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+****++***+*