Consolidation 3 P89407 F004B. Stable products

#include <iostream>
#include <vector>
using namespace std;

bool same_digits(int x, int y, int b ){
  vector<int> v(b,0);
  int taman = v.size();
  int xy= x*y;
  while(xy!=0){
    if (x!=0)++v[x%b];
    if (y!=0)++v[y%b];
    --v[xy%b];
    x/=b;
    y/=b;
    xy/=b;
  }
  for (int i = 0; i<taman; ++i){
    if(v[i]!=0) return false;
  }
  return true;
}


void write(int n, int b ){
  if(n!=0){
  write(n/b, b);
  int aux = n%b;
  if (aux<10) cout << aux;
  else cout << char(aux-10+'A');
  }
}



int main(){
  int x,y;
  while (cin >> x >> y){
    int in = 2;
    bool entra = false;
    cout << "solutions for " << x << " and " << y;
    while(in<=16){
      bool resultat = same_digits(x, y, in);
      if (resultat) {
    if (not entra) cout << endl;
    write(x,in);
    cout << " * ";
    write(y,in);
    cout << " = ";
    int nxy = x*y;
    write(nxy,in);
    cout << " (base " << in << ')' << endl;
        entra = true;
    }
    ++in;
  }
  if (not entra) {
    cout << endl;
    cout << "none of them" << endl;
  }
    cout << endl;
  }
}

// (c) Carlos Sansón (Best pro1 delegate ever for sure) @csansoon