hustOJ SPJ（special judge）模板

    #include <stdio.h>
    #include <math.h>
    #define PI acos(-1.0)
    #define AC 0
    #define WA 1
    int main(int argc,char *args[])
    {
        FILE * f_in=fopen(args[1],"r");
        FILE * f_out=fopen(args[2],"r");
        FILE * f_user=fopen(args[3],"r");
        int ret=AC;
    /**************自己写判题逻辑**************/
        double a,b,c,ans1,ans2;
        fscanf(f_in,"%lf",&a);
        ans2=2.0*PI*a;
        ans1=PI*a*a;
        fscanf(f_user,"%lf%lf",&b,&c);
        if (fabs(ans1-b)<0.0001 && fabs(ans2-c)>0.0001) ret=WA;
    /************************************/
        fclose(f_in);
        fclose(f_out);
        fclose(f_user);
        return ret;
    }