func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string s, t;     cin >> s >> t;     int n = s.length();     int x = t.length();     vector<int> lft(x);     vector<int> rgt(x);     int l = 0;     for (int i = 0; i < n && l < x; ++i) {       if (s[i] == t[l]) {         lft[l++] = i;       }     }     l = x - 1;     for (int i = n - 1; i >= 0 && l >= 0; --i) {       if (s[i] == t[l]) {         rgt[l--] = i;       }     }     int mx = 0;     mx = max(mx, lft[0]);     mx = max(mx, rgt[0]);     mx = max(mx, n - 1 - lft[x - 1]);     mx = max(mx, n - 1 - rgt[x - 1]);     for (int i = 1; i < x; ++i) mx = max(mx, rgt[i] - lft[i - 1] - 1);     cout << mx;   }   