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Re:wa到让人怀疑自己的人品，想象不到什么样的合法数据过不了。In Reply To:wa到让人怀疑自己的人品，想象不到什么样的合法数据过不了。 Posted by:huicpc0860 at 2009-08-24 23:13:42 > #include <stdio.h>
> #include <math.h>
> double abs(double a){if(a<0)return -a;return a;}
> int main(){double a,b,c,d,e,f,g;
> while(scanf("%lf %lf %lf %lf %lf %lf",&a,&b,&c,&d,&e,&f)!=EOF)
> printf("%.2lf\n",3.141592653589793
> *sqrt((a-e)*(a-e)+(b-f)*(b-f))
> *sqrt((a-c)*(a-c)+(b-d)*(b-d))
> *sqrt((c-e)*(c-e)+(d-f)*(d-f))
> /abs((a-c)*(b-f)-(a-e)*(b-d)));
> return 0;
> }
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