func_code_string: #include <bits/stdc++.h>   using namespace std;   int main(){    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);       //freopen( input.txt , r ,stdin);       //freopen( output.txt , w ,stdout);    int T;    cin>>T;    for(int t=0;t<T;t++){     int n,k;     cin>>n>>k;     if(n==1&&k==1){cout<<0<<endl;continue;}     if(k<=3){      if(k==2){       int m=n-1;       cout<<m<<endl;       cout<<1<<   ;       for(int i=3;i<=n;i++)        cout<<i<<   ;       cout<<endl;     }else{      if(k==1){       cout<<n-1<<endl;       for(int i=2;i<=n;i++)         cout<<i<<   ;        cout<<endl;      }      else{       cout<<n-2<<endl;       cout<<1<<   ;       for(int i=4;i<=n;i++)         cout<<i<<   ;        cout<<endl;             }     }     }else{      if(k%2==0){       int m=n-k/2;       cout<<m<<endl;       for(int i=k/2;i<=n;i++)        if(i!=k)cout<<i<<   ;       cout<<endl;      }else{       int m=n-k/2-1;       cout<<m<<endl;       for(int i=k/2+1;i<=n;i++)        if(i!=k)cout<<i<<   ;       cout<<endl;      }     }    }       return 0;   }   