用编译器调试的时候，好像输入之后变量都没被修改...

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

int b[200010],a[200010];

int ggg(int x){
	if(b[x]!=b[x+1]){
		return 1;
	}else{
		return ggg(x+1)+1;
	}
}

int main(){
	freopen("1.txt","r",stdin);
	int t;
	cin>>t;
	while(t--){
		cout<<1;
		int n=1,k;
		cin>>n>>k;
		for(int i=1;i<=n;i++){
			scanf("%d",&a[i]);
		}
		sort(a+1,a+n+1);
		int p=0,cmp=0,num=0;
		int j=1;
		while(j<=n){
			cmp=ggg(a[j]);++num;
			if(cmp>=k){
				b[++p]=num;
			}
			j+=cmp;
		}
		
		int tmax=-1;
		for(int i=1;i<=p;i++){
			if(b[i]==b[i-1]){
				cmp++;
			}else{
				cmp=0;
			}
			tmax=max(tmax,cmp);
		}
		cout<<tmax<<endl;
		
	}
	
}