--hdu 1800 Flying to the Mars(贪心)

#include<stdio.h>
#include<stdlib.h>
int cmp(const void *a,const void *b)
{
    return *(int *)a-*(int *)b;
}
int main(void)
{
    int n,i,ma,t;
    int a[3005];
    while(scanf("%d",&n)!=EOF)
    {
        for(i=0;i<n;i++)
        {
            scanf("%d",&a[i]);
        }
        qsort(a,n,sizeof(a[0]),cmp);
        ma=1;t=1;
        for(i=1;i<n;++i)
        {
            if(a[i]!=a[i-1])
                t=1;
            else
                ++t;
            ma=t>ma?t:ma;
        }
        printf("%d\n",ma);
    }

    return 0;
}