#include<iostream>
using namespace std;
int main()
{
	int a,b;
	int i;
	do{
		cout<<"nhap a lon hon 0 =";
		cin>>a;
		cout<<"nhap b lon hon 0 =";
		cin>>b;
	}while(a < 0 && b < 0);
	int max=a > b ? a : b;
	int min=a < b ? a : b;
	if( a==b )
	{
		cout<<a;
	}
	else
	{
		for(i=max ; i < a * b ; i++ )
			{
				if( i % a == 0 && i % b == 0)
				{
				return i;
				break;
				}
			}
	}
	cout<<i;
	return 0;
}
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