TWTCLOSE - Editorial

editorial
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35

hey thnx…my mistake i didn’t observe dat…thnx a lot…

36

Your class cannot be public, that’s the first problem at CodeChef. In addition

int c = Integer.parseInt(t1.substring(n - 1, n));
c = c - 1;

smells - J3TYWf - Online IDE & Debugging Tool - Ideone.com

37

@ajinkya1p3

You forgot to print number of open tweets after input “CLOSEALL”

I have added print statement and here’s the accepted version of your code

http://www.codechef.com/viewsolution/5479172

1 Like
38

Thanks a lot!! :smiley:

39

most welcome :slight_smile:

40

I did it in a similar way and the answer is submitted

#include
#include
#include
#include
using namespace std;
int main ()
{ ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n,k;
cin>>n>>k;
std::string str;
std::bitset<1000> boo;
while(k–){
cin>>str;
if(str ==“CLOSEALL”){
boo.reset();
cout<<0<<"\n";

}
else{
    int c;
    cin>>c;
    boo = boo.flip(1000-c);
    cout<<boo.count();
    cout<<endl;
}

}

return 0;
}

42

Can anyone help me out here? I’m getting wrong answer status. What’s wrong in my code?
https://www.codechef.com/viewsolution/25035176

43

you didn’t consider elements bigger than 9
your code will fail on those test cases

1 Like
44

Thank you for pointing it out. It was kind of a silly mistake. Here’s the correct one.
https://www.codechef.com/viewsolution/25048355

45

This code is giving NZEC error Please help me :woozy_face:

class TWTCLOSE {

    int result = 0;
static int Program(String str, int val, int[] arr) {
	if (arr[val] == 0) {
		arr[val] = 1;
		result++;
	} else {
		arr[val] = 0;
		result--;
	}
	return result;
}

public static void main(String[] args) throws IOException {
	java.io.BufferedReader r = new java.io.BufferedReader(new java.io.InputStreamReader(System.in));
	int n = 0;
	int k = 0;
	n = r.read();
	r.readLine();
	k = r.read();
	r.readLine();
	int[] arr = new int[Character.getNumericValue(n)];
	k = Character.getNumericValue(k);
	if (n >= 1 && k <= 1000) {
		while (k > 0) {
			String str = r.readLine();
			int length = str.length();
			str.trim();
			if (str.equalsIgnoreCase("closeAll")) {
				System.out.println("0");
				Arrays.fill(arr, 0);
				result = 0;
			} else {
				int val = Integer.parseInt((str.substring(length - 1, length)));
				System.out.println(Program(str, val-1, arr));
			}
			k--;
		}
	}
}

}

46

This is how I did it in Java.

class Codechef {

  public static void main (String[]args) throws java.lang.Exception
  {
    // your code goes here
    Scanner in = new Scanner(System.in);
    int n=in.nextInt();
    int k = in.nextInt();
    in.nextLine();
    int ans=0;
    int[] a = new int[n];
    for (int i=0;i<k;i++)
    {
        
        String s=in.nextLine();
        if (s.charAt(2)=='O')
        {
            ans=0;
            a = new int[n];
        }
        else
        {
            int l=s.length();
            String numstr=s.substring(6);
            int num=Integer.parseInt(numstr);
            
            
            if (a[num-1]==0)
            {
                a[num-1]=1;
                ans++;
                
            }
            else 
            {
                a[num-1]=0;
                ans--;
            }
        }
        System.out.println(ans);
    }
  }
}
48

I am getting TLE using React Js. I am new to this language. Can anyone help ?
My code

51

x,t = map(int,input().split())
st=""
while(t):
s = input()
if(“ALL” in s):
st=""
else:
for i in range(1,x+1):
if(str(i) in s):
if(str(i) in st):
st = st.replace(str(i),"",1)
else:
st+=str(i)
# print(st)
print(len(st))
t-=1

what is wrong in this pls help me

52

Poor Noah no mention of him, his Twitter bio once read I created this ! it’s unfortunate how he faded into obscurity.
Here’s some more about him : Twitter's Forgotten Cofounder, Noah Glass

53

#include<bits/stdc++.h>
using namespace std;
int search(int a[],int i)
{
int x=0;
for(int j=0;j<i;j++)
{
if(a[i]==a[j])
x++;
}
return x;
}
int main()
{
int n,k,open=0;
cin>>n>>k;
string s;
int a[k];
for(int i=0;i<k;i++)
{
cin>>s;
int b;
if(s==“CLOSEALL”)
{
int j=0;
while(a[j])
{
a[j]=0;
j++;
}
open=0;
cout<<open<<endl;
}
else
{
cin>>a[i];
if(a[i]<=n)
{
b=search(a,i);
if(b%2==0)
open++;
else
open–;
cout<<open<<endl;
}
}
}
}

Why it is not being accepted as a correct answer?..

54

I am getting wrong answer for my code . can anyone check.
Solution : CodeChef: Practical coding for everyone

(k,n)=map(int,input().split())
str1=“”
count=0
for i in range(n):
l1=list(map(str,input().split(" “)))
if(l1[0]==“CLICK” and int(l1[1])<=n):
if l1[1] not in str1:
str1=str1+l1[1]
count=count+1
else:
str1.replace(l1[1],”“)
count=count-1
else:
str1=”"
count=0
print(str(count))

55

Consider the test input:

20 3
CLICK 1
CLICK 2
CLICK 12
56

Thank you :slightly_smiling_face:

1 Like
57

how you think for test cases it always happen with me i will be missing some test cases.

58

With this one - just spotted the flaw in your logic, and crafted a testcase to exploit it :slight_smile: