Exhibition

ACCEPTED !! Though late, i realize how useful the UVa forum is.... 
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Question: Exhibition
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#include "iostream.h"
#include "iomanip.h"

int main()
{
   int t;
   cin >> t;
   for(int i = 1; i <= t; i++) {
       int type[10001];
       for(int j = 0; j < 10001; j++) type[j] = 0;
       int mat[50][52];
       int n;
       cin >> n;
       for(int j = 0; j < n; j++) {
           int m;
           cin >> m;
           mat[j][0] = m;
           mat[j][1] = 0;
           for(int k = 0; k < m; k++) {
               cin >> mat[j][k+2];
               type[mat[j][k+2]]++;
           }
       }

       int ucount = 0;
       for(int j = 0; j < n; j++) {
           for(int k = 0; k < mat[j][0]; k++) {
               type[mat[j][k+2]]--;
           }

           for(int k = 0; k < mat[j][0]; k++) {
               if(type[mat[j][k+2]] == 0) {
                   mat[j][1]++;
                   ucount++;
               }
               type[mat[j][k+2]]++;
           }
       }

       cout << "Case " << i << ":";

       cout.setf(ios::fixed);
       for(int j = 0; j < n; j++) {
           double perc = 33.333333;
           if(ucount != 0) perc = mat[j][1] * 100.00 / ucount;
           cout << setprecision(6) << " " << perc << "%";
       }
       cout << endl;
   }
   return 0;
}
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