#include "iostream.h"
#include "math.h"

bool primeEachOther( unsigned long m , unsigned long n )
{
	unsigned long d;
	unsigned long i;
	if( m > n )
		d = n;
	else
		d = m;
	for( i = 2 ; i <= d ; i++ )
		if( m % i == 0 && n % i == 0 )
			return false;
	return true;
}
int main()
{
	unsigned long m , n;
	unsigned long d , t, min , i , j;
	unsigned long x , y;
	while( cin >> m >> n )
	{
		d = n / m;
		min = 0xffffffff;
		for( i = 1 ; i <= sqrt( d ) ; i++ )
		{
			if( d % i == 0 )
			{
				j = d / i;
				if( !primeEachOther( i , j ) )
				{
					continue;
				}
				t = i + j;
			
				if( t < min )
				{
					min = t;
					x = i;
					y = j;
				}
			}
		}
		cout<<m*x<<" "<<m*y<<endl;
	}

	return 0;
}

• 最明显的错就是用unsigned long，题目说了最大的数有2^63。题目都还没看清就不要对自己的程序那么有信心 (853) frkstyc 2005-05-24 21:44:23