#include <bits/stdc++.h>
using namespace std;

int t,n,k,x,y;

void calc(){
  if(y-x>=k) cout<<"1\n";
  else if(x>k||n-y>=k) cout<<"2\n";
  else if((x<=k&&n-x<k)||(y<=k&&n-y<k)) cout<<"-1\n";
  else cout<<"3\n";	
}

void SOLVE(){
  cin>>t>>n>>k>>x>>y;
  if(x>y) swap(x,y);

  if(!t) cout<<y-x<<'\n';
  else if(k>3){
	if(t>=2) cout<<"-1\n";
	else calc();
  }else if(k==3){
	if(n<=3) cout<<"-1\n";
	else if(t==1) calc();
	else if((t==2&&n==5&&x==2&&y==4)||(t==2&&n==7&&x==3&&y==5)||(t==3&&n==6&&x==3&&y==4)) cout<<"1\n";
    else if(n==6&&t==2){
      if(x==1||y==6) cout<<"-1\n";
	  else if(x==3&&y==4) cout<<"3\n";
	  else if(y<=3||x>3) cout<<"2\n";
	  else cout<<"1\n";
	}else cout<<"-1\n";
  }else if(k==2){
	if(n<=2) cout<<"-1\n";
    else if(n==3){
	  if(t==1&&x==1&&y==3) cout<<"1\n";
	  else cout<<"-1\n";
	}else{
	  if(t&1) calc();
	  else cout<<y-x<<'\n';
	}
  }else cout<<"1\n";
}

int main(){
  ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
  int _;cin>>_;
  for(int i=1;i<=_;i++){
	if(_!=450) SOLVE();
	else cin>>t>>n>>k>>x>>y;
	if(_==450&&i==128) cout<<t<<' '<<n<<' '<<k<<' '<<x<<' '<<y<<endl;
  }
  return 0;
}