void operations(){
    //loads the data
    try {
      in = new RandomAccessFile(in_file,"r");
      n = Integer.parseInt(in.readLine());
      array = in.readLine().toCharArray();
    }
    catch (IOException ex) {
    }catch (NumberFormatException ex) {
    }
    //here`s the operations
    for(int i = 1; i < 11; i++){
      for(int j = 0; j < n; j+=i){
        if(array[j] == '1'){
          array[j] = '0';
        }
        else{
          array[j] = '1';