NZEC error PLMU

help
1

/* package codechef; // don’t place package name! */

import java.lang.;
import java.io.;

/* Name of the class has to be “Main” only if the class is public. */
class Codechef
{
public static void main (String[] args) throws IOException
{
// your code goes here
InputStreamReader read=new InputStreamReader(System.in);
BufferedReader in=new BufferedReader(read);
int testCase,i,j,noOfElement,k1=0,k2=0,inp,ans;
testCase=Integer.parseInt(in.readLine());
for(i=0;i<testCase;i++)
{
k1=0;
k2=0;
ans=0;
noOfElement=Integer.parseInt(in.readLine());
for(j=0;j<noOfElement;j++)
{
inp=Integer.parseInt(in.readLine());
if(inp==2)
{
k1++;
}
if(inp==0)
{
k2++;
}
}

       ans=(int)(0.5*(k1*(k1-1)+k2*(k2-1)));
       System.out.println(ans);
	}
}

}

2

Please either format your code or link to your submission - the forum software has mangled it and it won’t compile! :slight_smile:

3

This solution caused no errors.
https://www.codechef.com/viewsolution/28381420

4

Link to source code
https://www.codechef.com/viewsolution/28390478

1 Like
5

I have encountered similar errors for many solutions.
Can someone please help me deal with this problem?
Both scanner and buffered reader have caused similar errors for me before.

6

This fails on the sample testcase:

>echo "2
3
2 4 2
3
0 2 3

" | ./run-java.sh
Exception in thread "main" java.lang.NumberFormatException: For input string: "2 4 2"
        at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
        at java.base/java.lang.Integer.parseInt(Integer.java:652)
        at java.base/java.lang.Integer.parseInt(Integer.java:770)
        at Codechef.main(kishan_pi-PLMU.java:24)

The N elements for a testcase all occur on one line, not on N different lines :slight_smile:

2 Likes
7

@ssjgz How can I deal with it?
How did you detect this error?

8

Learn how to read input in Java - the other AC solutions will help you :slight_smile: Here’s one I’ve picked at random.

I just ran your code with the given sample testcase on my local machine.

1 Like
9

Thanks for the help

1 Like