#include <iostream>;
using namespace std;

/*baitap1*/

int main()
{	
	cout<<"nhap nam sinh:";
	int namsinh;
	cin>>namsinh;
	cout<<"nhap nam hien tai:";
	int namht;
	cin>>namht;
	int tuoi;
	tuoi=namht-namsinh;
	cout<<"tuoi cua nguoi do la:"<<tuoi;
	return 0;
		
}
