hdu 5123 who is the best?

hdu 5123 who is the best?

#include<stdio.h>#include<string.h>int main(){    int t,n,a[105],i,j,max,b;    while(~scanf("%d",&t))        while(t--)    {        memset(a,0,sizeof(a));        scanf("%d",&n);        max=0;        for(i=1;i<=n;i++)            {                scanf("%d",&b);                a[b]++;            }            for(i=1;i<=n;i++)                if(a[i]>max) {max=a[i];j=i;}        printf("%d\n",j);    }    return 0;}