#include <iostream> 
#include <string> 
using  namespace  std; 
 
class  Date{ 
  int  y,m,d; 
public : 
  Date( int  y, int  m, int  d) ; 
  int  month( ) { return  m; } 
  int  day( ) { return  d; } 
  int  year( ) { return  y; } 
} ; 
 
int  main( ) { 
  Date b{ 1970 ,12 ,30 } ; 
cout <<  b.month ( ) <<  '\n ' ; 
} 
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8c3RyaW5nPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKY2xhc3MgRGF0ZXsKICBpbnQgeSxtLGQ7CnB1YmxpYzoKICBEYXRlKGludCB5LCBpbnQgbSwgaW50IGQpOwogIGludCBtb250aCgpe3JldHVybiBtO30KICBpbnQgZGF5KCl7cmV0dXJuIGQ7fQogIGludCB5ZWFyKCl7cmV0dXJuIHk7fQp9OwoKaW50IG1haW4oKXsKICBEYXRlIGJ7MTk3MCwxMiwzMH07CmNvdXQ8PCBiLm1vbnRoKCk8PCAnXG4nOwp9
				
				 
			
				
			
			
				
	
		
	
		 
	/home/NzBy12/ccVqRT54.o: In function `main':
prog.cpp:(.text.startup+0x29): undefined reference to `Date::Date(int, int, int)'
collect2: error: ld returned 1 exit status