func_code_string: #include <bits/stdc++.h>   using namespace std;   const int INF = 2147483647;   const int N = 2005;   int z, n, k, c, i, ind, tab[N];   char t[N];   string s;   vector<pair<int, int> > v;   void sett(int val, int ind) {     if (tab[ind] == val) return;     int i = ind + 1;     while (tab[i] != val) i++;     v.push_back(pair<int, int>(ind, i));     while (ind < i) {       swap(tab[ind], tab[i]);       ind++;       i--;     }   }   int main() {     scanf( %d , &z);     while (z--) {       scanf( %d %d , &n, &k);       scanf( %s , t);       s = t;       for (i = 0; i < n; i++)         if (s[i] ==  ( )           tab[i] = 0;         else           tab[i] = 1;       v.clear();       ind = 0;       for (i = 0; i < k - 1; i++) {         sett(0, ind++);         sett(1, ind++);       }       c = n / 2 - k + 1;       for (i = 0; i < c; i++) sett(0, ind++);       for (i = 0; i < c; i++) sett(1, ind++);       printf( %d n , v.size());       for (auto& w : v) printf( %d %d n , w.first + 1, w.second + 1);     }     return 0;   }   