func_code_string: #include <bits/stdc++.h>   using namespace std;   long long MOD = int(1e9) + 7;   int debug = 0;   const int N = int(2e3) + 5;   using namespace std;   int a[N], b[N], p[N];   int main() {     int i, j, n, t;     ios::sync_with_stdio(false);     cin >> n;     for (i = 0; i < n; i++) cin >> a[i];     for (i = 0; i < n; i++) cin >> b[i];     int ans = 0;     vector<pair<int, int> > moves;     for (i = 0; i < n; i++) p[a[i]] = i;     for (i = 0; i < n; i++) {       int pos = -1;       for (j = 0; j < n; j++)         if (debug)           cerr <<  j                 <<  :   << j <<   |                  <<  b[j]                 <<  :   << b[j] << endl;       ;       for (j = 0; j < n; j++)         if (p[b[j]] == i) pos = j;       if (j == i) continue;       if (debug)         cerr <<  pos               <<  :   << pos <<   |                <<  i               <<  :   << i << endl;       ;       int cur = pos;       for (j = pos - 1; j >= i; j--) {         if (p[b[j]] >= cur) {           ans += cur - j;           moves.push_back(make_pair(j, cur));           b[cur] = b[j];           b[j] = i;           cur = j;         }       }     }     cout << ans <<   n ;     reverse(moves.begin(), moves.end());     cout << moves.size() <<   n ;     for (i = 0; i < moves.size(); i++)       cout << moves[i].second + 1 <<     << moves[i].first + 1 <<   n ;   }   