func_code_string: #include <bits/stdc++.h>   using namespace std;   string t;   long long cnt1[3000001];   int main() {     ios_base::sync_with_stdio(0);     cin >> t;     cnt1[0] = 0;     int n = (int)t.length();     for (int i = 0; i <= n - 4; ++i) {       if (t.substr(i, 5) ==  heavy ) ++cnt1[i + 1];       cnt1[i + 1] += cnt1[i];     }     long long ans = 0;     for (int i = 0; i <= n - 4; ++i)       if (t.substr(i, 5) ==  metal ) ans += cnt1[i];     cout << ans;     return 0;   }   