#include <bits/stdc++.h>   using namespace std;   bool compare(const pair<long long, long long> &a,                const pair<long long, long long> &b) {     return a.second > b.second;   }   int main() {     std::ios::sync_with_stdio(false);     std::cin.tie(nullptr);     long long i, j;     string s;     cin >> s;     long long n = s.length();     long long f = 1;     if (n < 4) {       cout << 0;     } else {       long long sm = 0;       long long fsm = 0;       for (i = 0; i < n - 3; i++) {         if (s[i] ==  b  && s[i + 1] ==  e  && s[i + 2] ==  a  &&             s[i + 3] ==  r ) {           sm = i + 1;         }         fsm += sm;       }       cout << fsm;     }   }   