#include<bits/stdc++.h>
#define ll long long
#define pii pair<ll,ll>
#define lowbit(x) (x&-x)
#define log(x) (31^__builtin_clz(x))
using namespace std;
	ll t,n,k,x,y;
ll calc(ll a,ll b){
	if(abs(a-b)>=k)return 1;
	if((a-1>k&&n-a>k)||(b-1>k&&n-b>k))return -1;
	if((a-1>=k&&b-1>=k)||(n-a>=k&&n-b>=k))return 2;
	return 3;
}
void solve(){
	cin>>t>>n>>k>>x>>y;
	if(x>y)swap(x,y);
	if(t==0){
		cout<<y-x<<"\n";
		return;
	}
	if(k==1){
		cout<<"1\n";
		return;
	}
	if(k==2){
		if(n==2){
			cout<<"-1\n";
			return;
		}
		if(n==3){
			if(t==1&&x==1&&y==3)cout<<"1\n";
			else cout<<"-1\n";
			return;
		}
		if(t&1){
			cout<<calc(x,y)<<"\n";
		}
		else{
			cout<<y-x<<"\n";
		}
		return;
	}
	if(t>=2){
		if(k==3&&t==2){
			if(n==5&&x==2&&y==4){
				cout<<"1\n";
				return;
			}
			if(n==6){
				if(x==1||y==6){
					cout<<"-1\n";
					return;
				}
				if((x==2&&y==3)||(x==4&&y==5))cout<<"2\n";
				else cout<<"1\n";
				return;
			}
			if(n==7){
				if(x==3&&y==5){
					cout<<"1\n";
					return;
				}
			}
		}
		cout<<"-1\n";
		return;
	}
	else{
		if((x-1<k&&n-x<k)||(y-1<k&&n-y<k)){
			cout<<"-1\n";
		}
		else{
			if(y-x>=k)cout<<"1\n";
			else{
				if((x-1>=k&&y-1>=k)||(n-x>=k&&n-y>=k))cout<<"2\n";
				else cout<<"3\n";
			}
		}
		return;
	}
	assert(0);
}
int main(){
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    int t=1;
    cin>>t;
    while(t--)solve();
    return 0;
}