378 - Intersecting Lines

All about problems in Volume 3. If there is a thread about your problem, please use it. If not, create one with its number in the subject.

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Rafa3p
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Posts: 5
Joined: Sun Dec 25, 2011 1:32 am

Re: Problem 378

Post by Rafa3p » Thu Dec 29, 2011 8:10 pm

I changed this:

Code: Select all

            if(Y==0)printf("POINT %.2f 0.00\n",X);
            else if(X==0) printf("POINT 0.00 %.2f\n",-Y);
            else printf("POINT %.2f %.2f\n",X,-Y)
for this:

Code: Select all

            if(X==0)printf("POINT 0.00");
            else printf("POINT %.2f",X);
            if(Y==0) printf(" 0.00\n");
            else printf(" %.2f\n",-Y);
And got AC.
I did this because sometimes i was printing "-0.00" instead of "0.00"

expecto_petronum
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Posts: 2
Joined: Mon Oct 31, 2011 10:55 am

UVA 378

Post by expecto_petronum » Sat Apr 07, 2012 4:58 am

Someone please help me with my code. Its got Wrong answer, i donot understand why?

Code: Select all


#include<stdio.h>


int main()
{
	printf("INTERSECTING LINES OUTPUT\n");
	int n,x_1,x_2,x_3,x_4,y_1,y_2,y_3,y_4;
	double d,d1,d2,t1,t2,x,y;
	
	scanf("%d",&n);
	
	
	while(n>0)
	{
		scanf("%d%d%d%d%d%d%d%d",&x_1,&y_1,&x_2,&y_2,&x_3,&y_3,&x_4,&y_4);
		d=(double)((x_1-x_2)*(y_3-y_4))-((y_1-y_2)*(x_3-x_4));
		d1=(double)((x_3-x_4)*(y_3-y_1))-((y_3-y_4)*(x_3-x_1));
		d2=(double)(-((x_3-x_1)*(y_1-y_2))+((y_3-y_1)*(x_1-x_2)));

		
		if((int)d==0 && (int)d1==0 && (int)d2==0)
		{
			printf("LINE\n");
		}
		else if((int)d==0)
		{
			printf("NONE\n");
		}
		else
		{
			t1=d1/d;
			t2=d2/d;
			x=x_1+t1*(x_2-x_1);
			y=y_1+t1*(y_2-y_1);
			printf("POINT %.2lf %.2lf\n",x,y);
		}
		n--;

	}

	printf("END OF OUTPUT");
	return 0;
}





brianfry713
Guru
Posts: 5947
Joined: Thu Sep 01, 2011 9:09 am
Location: San Jose, CA, USA

Re: UVA 378

Post by brianfry713 » Mon Apr 09, 2012 9:45 pm

Missing newline at end.
Check input and AC output for thousands of problems on uDebug!

samir_h
New poster
Posts: 11
Joined: Wed Mar 18, 2015 8:47 am

[378 - Intersecting Lines][Wrong Answer] Please help

Post by samir_h » Fri Apr 22, 2016 11:49 am

Problem: https://uva.onlinejudge.org/external/3/378.pdf
What is wrong with http://ideone.com/GvTfIo?
It solves mentioned input and https://www.udebug.com/UVa/378 random input.
But still getting WA after submit.

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