void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("x : ");
  while(Serial.available() == 0){}
  int x ;
  x = Serial.parseInt();
  Serial.println("y : ");
  while(Serial.available() == 0){}
  int y ;
  y = Serial.parseInt();
  Serial.println(' ');
  Serial.println(x);
  Serial.println(y);

  int mylist[x][y];
  for(int xi = 0 ; xi<x ; xi++){
    for(int yi =0 ; yi < y ; yi++){
      Serial.print('x');
      Serial.print(xi);
      Serial.print('y');
      Serial.println(yi);
      while(Serial.available() == 0){}
      mylist[xi][yi] = Serial.parseInt();     
    } }
    Serial.println("Resalt");

      for(int xi = 0 ; xi<x ; xi++){
    for(int yi =0 ; yi < y ; yi++){
      Serial.print('x');
      Serial.print(xi);
      Serial.print('y');
      Serial.println(yi);

      Serial.println(mylist[xi][yi]);    
    } }
}

void loop() {
  // put your main code here, to run repeatedly:

}