1256 - URI

#include <bits/stdc++.h>
using namespace std;

int main() {
    vector <int> aux;
    vector < vector <int> > lista (110, aux);
    int m, n, testes, num;
   
   cin >> testes;
   
   while(testes--){
       cin >> m >> n;
       
       for(int i = 0; i < n; i++){
           cin >> num;
           //cout << num << " : " << num%m << "\n";
           lista[num%m].push_back(num);
       }
       
       for(int i = 0; i < m; i++){
           cout << i << " -> ";
           
           for(int j = 0; j < lista[i].size(); j++){
               cout << lista[i][j] << " -> ";
           }
           
           cout << "\\" << "\n";
       }
       if(testes >= 1)
        cout << "\n";
       
       for(int i = 0; i < m; i++){
           for(int j = 0; j < lista[i].size(); j++){
               lista[i].clear();
           }
       }
       
   }
   
    return 0;
}