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不要贴ac code

Posted by frkstyc at 2006-03-17 18:16:43 on Problem 1730
In Reply To:我也提供代码 多谢前面那位提供代码的兄弟 Posted by:gemenhao at 2006-03-17 18:15:09
给别人独立思考的机会

> #include<stdio.h>
> #include<math.h>
> #define zero 1e-6
> typedef long long l64;
> int powb(l64 t,l64 x)
> {
> 	if(2==t%4)
> 		return 1;
> 	int b=2,p=1,a=1;
> 	if(t%5==2||t%5==3||x<0)
> 		a=2;
> 	for(int i=a+1;b>1;i+=a)
> 	{
> 		b = (int)(pow(t,1.0/i)+zero);
> 		if(fabs(pow(b,i)-t)<zero)
> 			p = i;
> 	}
> 	return p;
> }
> 
> int main()
> {
> 	l64 x;
> 	while(scanf("%I64d",&x) && x)
> 		printf("%d\n",powb(x>0?x:-x,x));
> 	return 0;
> }

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