How to find NZEC error?

I am getting this error. I have tried this code for many sample input. However, it is showing NZEC error when i try submitting the code.

MY CODE :

https://www.codechef.com/viewsolution/11288574

I am also having the same problem of nzec in following program.
import java.util.*;

class Solution {
static long want = 0, red = 0;
static int i = 0;

static long[] a= new long[(int)10000];
static long[] b= new long[(int)10000];

static void marks(long e,long n) {

	Scanner S = new Scanner(System.in);

	if( n == 1) {
		while( e > 1 ) {
		long sum = S.nextLong();
		a[i] = a[i] + sum;
		e--;
		}
	}
	else {
		while( e > 0 ) {
		long sum = S.nextLong();
		a[i] = a[i] + sum;
		e--;
		}
	}
	i++;


}

static void sort() {
	long temp = 0;

	for ( int j = 0 ; j < i ; j++ ) {
		for( int k = j+1 ; k < i ; k++ ) {
			if( a[j] < a[k] ) {

				temp = a[k];
				a[k] =a[j];
				a[j] = temp;

			}
		}
	}

}

static void select(int k) {

	int z = 0;
	while ( k > 0 ) {
		b[z] = a[k-1];
		z++;
		k--;
	}

}

static long min(long k) {

	if ( red > b[0] )
		want = 0;
	else if ( red == b[0] )
		want = 1;
	else
		want = b[0] - red + 1;
	return want;


}

public static void main(String[] args) {

	Scanner S = new Scanner(System.in);

	long t = S.nextLong();


	while(t>0) {

		for ( int l = 0 ; l < a.length ; l++ ){
			a[l] = 0;
			b[l] = 0; 
		}
		i = 0;
		want  = 0;
		red = 0;

		long n = S.nextLong();
		if( n < 1 || n > 10000 )
			System.exit(0);

		int k = S.nextInt();
		if( n < 1 || n > 10000 )
			System.exit(0);

		long e = S.nextLong();
		if( e < 1 || e > 4 )
			System.exit(0);

		long m = S.nextLong();
		if( m < 1 || m > 1000000000 )
			System.exit(0);

		while( n > 0) {
			marks(e,n);
			n--;
		}
		red = a[i-1];
		sort();
		select(k);
		long ans = min(k);
		System.out.println(""+ans);
		t--;
	}

}

}

I am facing NZEC runtime error in this code… what wrong am i doing??

t=int(raw_input())
while(t>0):
c=int(input())
d=int(input())
l=int(input())
if l%4==0:
l1=l/4
if l1<= c+d:
if c<=2d and l1>=d:
print “yes\n”
elif c>2
d and l1>= c+d-2*d:
print “yes\n”
else:
print “no\n”
else:
print “no\n”
else:
print “no\n”
t-=1

@adicodechef

I highly suspect that the error is due to missing return statement and “main()”

Change it to “int main()” and add a “return 0;” in end of program.

Plz Help me I Am Getting Same Error

Code Here-

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

import java.util.;
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 java.lang.Exception
{
BufferedReader p = new BufferedReader(new InputStreamReader(System.in));

	int queries= Integer.parseInt(p.readLine());
	int big,small;
	for (int i =0;i<=queries;i++)
	{
	    
	    int a= Integer.parseInt(p.readLine());
	     int b= Integer.parseInt(p.readLine());
	     if(a>b)
	     {
	   big=a;
	     small=b;
	  }
	  else
	  {
	    big=b;
	     small=a;  
	  }
	  
	     
	     if(a%2!=0 && b%2!=0)
	     {
	         if(a+2==b || a-2==b)
	         System.out.println("Yes");
	     }
	     else if (a%2==0 && b%2==0)
	     {
	         if(a+2==b || a-2==b)
	         System.out.println("Yes");
	     }
	     
	     else if (big-small==1 && big%2==0)
	     System.out.println("Yes");
	     
	     else
	     System.out.println("No");
	    
	    
	    
	}

}
}

def home():

x=[]

for number in range(0,4):

value = int(input('Enter the values for %dth element'%number))
x.append(value)

if x[2] - x[0] > 0 and x[1] - x[3] == 0:

print (‘right’)

elif x[0] - x[2] > 0 and x[1] - x[3] == 0:

print(‘left’)

elif x[0]-x[2] == 0 and x[1] - x[3] > 0 :

print ('down')

elif x[0] - x[2] == 0 and x[1] - x[3] > 0 :

print ('up')

else :
print (‘sad’)

test_case= int(input(‘Enter the number of test cases’))
for no in range(0,test_case):
home()

I’m getting NZEC for this code. Someone help me out!

How remove NZEC
/* package codechef; // don’t place package name! */

import java.util.;
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 java.lang.Exception
{
Scanner sc=new Scanner(System.in);
int x=sc.nextInt();
int y=sc.nextInt();
if (y>x)
{
double b=(y-x)-0.50;
System.out.println(b);

    }
    else System.out.println(y);
    
    
    sc.close();  
}

}

why does the following code give NZEC error ?
T = input()
N = [0 for i in range (0,T)]
P = [0 for i in range(T)]
res = [“no” for i in range(T)]
p = [0 for i in range(500)]
cc = [0 for i in range(500)]
ch = [0 for i in range(500)]
for i in range(0,T):
N[i] = input()
P[i] = input()
for j in range (0, N[i]):
p[j] = input()
if (p[j]>=(P[i]/2)):
cc[i] = cc[i]+1
elif (p[j]<=(P[i]/10)):
ch[i] = ch[i]+1
if((cc[i] == 1) and (ch[i] == 2)):
res[i] = “yes”
for i in range(0,T):
print res[i]

[Solution][1]
→ Why does this code gives NZEC??

Thank You
[1]: CodeChef: Practical coding for everyone

adding an exception handler which does nothing removes the nzec error

java example:

try
{
} catch (Exception e){}

actually i use to code in python where there is no such use of return 0 statement.
I have submitted many problems in Python.

Then its due to some exception trace your source code carefully

1 Like

my code is

import java.io.;
import java.lang.
;
public class sum
{
public static void main (String[] args)throws Exception
{
java.io.BufferedReader r = new java.io.BufferedReader (new java.io.InputStreamReader (System.in));
System.out.println(“Enter the number”);
int i=Integer.parseInt(r.readLine());
int sum=0;
for(int j=1;j<i;j++)
{
if(i%j==0)
{
sum+=j;
} }
System.out.println(sum);
}
}

CodeChef: Practical coding for everyone

But it is not showing any runtime error! What are you talking about? See-

If n>100 in your code , it will give you NZEC error

you can declare your array z dynamically or declare it with max value of n

Due to brute force consuming lot of memory in recursion calls and overflowing the memory stack. Use map data structure and memoization.

Thank you so much, i tried the memoization and got an AC.

can anyone tell me t=why NZEC error is there
solution
https://www.codechef.com/viewsolution/24654440
q
https://www.codechef.com/JUNE19/PROXYC

When i encountered NZEC problem, I found that I am using arraylist and adding values in it on basis of some condition and when condition is not fulfilled no value will be added in arraylist and in my next statements i was trying to access elements from empty arraylist which result into NZEC error, So while tracing your code keep in mind these things they may help you.