#include <stdio.h>

main()
{
	struct abc {
		int a;
		int b;
		int c;
	};
	
	struct abc dat1={1,2,3};
	struct abc dat2={4,5,6};
	
	dat1.c=dat1.b+dat2.c+dat2.a;
	
	printf("%d\n",dat1.c);
}