func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 2010;   int n, a[N], p[N], pos[N];   vector<int> c[26], ans;   string s, t;   void add(int x) {     if (0 < x) {       ans.push_back(x);     }     vector<int> nw;     for (int i = n - 1; i >= n - x; --i) {       nw.push_back(p[i]);     }     for (int i = n - 1; i >= x; --i) {       p[i] = p[i - x];     }     for (int i = 0; i < x; ++i) {       p[i] = nw[i];     }     for (int i = 0; i < n; ++i) {       pos[p[i]] = i;     }   }   int main() {     cin >> n >> s >> t;     for (int i = 0; i < n; ++i) {       c[t[i] -  a ].push_back(i);     }     for (int i = 0; i < n; ++i) {       int ind = s[i] -  a ;       if (c[ind].size() == 0) {         puts( -1 );         return 0;       }       p[i] = c[ind].back();       c[ind].pop_back();       pos[p[i]] = i;     }     for (int i = 0; i < n; ++i) {       add(n - pos[i] - 1);       add(1);       add(n);     }     cout << ans.size() <<   n ;     for (int i : ans) cout << i <<    ;     return 0;   }   