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#include <cstdio>
#include <cstdlib>
#include <cstring>
using namespace std;
int m,n,i,j,k,tot;
int a[100001],d[20],b[20],c[20],c1[20],fir[20],app[20];
int total,lin,ans;
int main()
{
 //   freopen("input.txt","r",stdin);
 //   freopen("output.txt","w",stdout);
    scanf("%d",&total);
    for (lin=1;lin<=total;++lin)
    {
        scanf("%d%d",&n,&m);
        for (i=1;i<=n;++i) scanf("%d",&a[i]);
        memset(d,0,sizeof(d));
        memset(b,0,sizeof(b));
        k = 0;
        ans = 0;
        for (i=1;i<=m;++i)
        {
            memset(c,0,sizeof(c));
            memset(d,0,sizeof(d));
            memset(c1,0,sizeof(c1));
            tot = 0;
            for (j=1;j<=n;++j)
                if (b[a[j]]==0)
                {
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