#include <stdio.h>
int a[400000];
int main(){ int caseno,n,k,i,j,cn,count,num; caseno = 1;
while( scanf("%d",&n) != EOF) {
for(k=0;k<400000;k++) a[k] = 0;
count = n/2; for(k=0;k<n;k++) { scanf("%d",&num); a[k] = num; }
for(i=0;i<n;i++) // { cn = 0; for(j=0;j<n;j++) // { if(a[i] == a[j]) cn++; }
if(cn > count) { printf("Case %d: %d/n/n",caseno,a[i]); break; } }
caseno++; }
return 0;}