hdu1060-Leftmost Digit

http://acm.hdu.edu.cn/showproblem.php?pid=1060

#include<iostream>
#include<cstdio>
#include<cmath>

using namespace std ;

int main()
{
	double temp ;
	int Case , n ; 
	__int64 ans ;
	cin >> Case ;
	{
		while( Case-- )
		{
			cin >> n ;
			ans = ( __int64 ) ( n * log10((double) n ) ) ;
			int sum  =  pow( 10.0 , ( n * log10( ( double ) n ) - ans ) ) ; 
			cout << sum << endl ;
		}
	}
	return 0 ;
}