class Main {

   int m(int a, int b) {
      return a + b + 1;
   }
	
	void main() {
	
	   int res;
	   res = -1;

      res = m(1, 2);
      write(res);
      writeln();
      
      res = this.m(1, 2);
      write(res);
      writeln();
	   
      write(m(1, 2));
      writeln();
      
      write(this.m(1, 2));
      writeln();
	
	}
}