poj 1989 The Cow Lineup

#include<stdio.h>#include<string.h>#define clr(x)memset(x,0,sizeof(x))int v[10005];int main(){    int n,k,p,i,res,num;    while(scanf("%d%d",&n,&k)!=EOF)    {        res=num=0;        clr(v);        for(i=0;i<n;i++)        { scanf("%d",&p); if(!v[p]) {     v[p]=1;     num++;     if(num==k)     {         res++;         clr(v);         num=0;     } }        }        printf("%dn",res+1);    }    return 0;}