https://www.codechef.com/viewsolution/10581225
Why is this getting WA?
can anyone please point out my mistake in this solution, it gives wrong ans on submission.
https://www.codechef.com/viewsolution/11548341
its showing wrong answer but works fine. can anyone please tell me whats wrong?
def checker(x):
p = 0
for i in range(len(x)):
if x[i] == 1:
p += 1
print(p)
def end(x):
return x[-1:]
n,k = input().split()
n,k = int(n),int(k)
tweetstatus = []
while n>0:
tweetstatus.append(0)
n -= 1
while k>0:
s = str(input())
if s == 'CLOSEALL':
for i in range(len(tweetstatus)):
tweetstatus[i] = 0
else:
z = int(end(s))
if tweetstatus[z-1] == 0:
tweetstatus[z-1] = 1
else:
tweetstatus[z-1] = 0
checker(tweetstatus)
k-= 1
https://www.codechef.com/viewsolution/15965360
Can anyone tell me whatâs wrong in my solution? Itâs showing Runtime error.
My solution is working correctly with the sample test case(after running on my system)
But not working after submission.
Please help me out!
#include<iostream>
#include<string>
using namespace std;
int main(){
int N,K;
cin>>N>>K;
string choice;
int in,count = 0,arr[N];
for(int i = 0;i < N;i++)
arr[i] = 0;
while(K--){
cin>>choice;
if(choice.compare("CLICK")==0){
cin>>in;
if(arr[in-1]){
arr[in] = 0;
count--;
}
else{
arr[in-1] = 1;
count++;
}
}
else if(choice.compare("CLOSEALL")==0){
for(int j = 0;j < K;j++)
arr[j] = 0;
count = 0;
}
cout<<count<<endl;
}
}
I applied the same approach
while it gets wrong when i use getline
CodeChef: Practical coding for everyone correct
this got correct when i didnât.
CodeChef: Practical coding for everyone is not correct
can anyone help me finding out why.
Can anyone help why I am getting a wrong answer?
My solution is CodeChef: Practical coding for everyone
I am unable to understand what is wrong with this solution : CodeChef: Practical coding for everyone
When i run this program it shows : Exception in thread âmainâ java.lang.StringIndexOutOfBoundsException: String index out of range: 7
at java.base/java.lang.StringLatin1.charAt(StringLatin1.java:44)
at java.base/java.lang.String.charAt(String.java:692)
at numberOfOpenTweets.main(numberOfOpenTweets.java:16)
So if you can spot the error please tell
Memset would also take O(N) time to go through each element. But yes, the actual time might be lesser.
For every CLOSEALL, we do not do anything if number of tweets is 0. That could help but doesnât lower worst case time.
I used memset for filling 0s. My solution was showing wrong answer though I have implemented it same as mentioned in the tutorial.
http://www.codechef.com/viewsolution/1132512
Canât find what is the difference
@vikram535 : Please check the âmemsetâ function in the library. The last parameter should be the number of bytes, and not number of elements in the array. If your array is int A[1001]; , you should use it as, memset(A,0,sizeof(A));
You meant for example O(1/2 * N)? In fact that doesnât matter, itâs asymptotically O(N).
Thank you so much for pointing out my mistake. I was not able to find it. Thanks again
hey thnxâŚmy mistake i didnât observe datâŚthnx a lotâŚ
Your class cannot be public
, thatâs the first problem at CodeChef. In addition
int c = Integer.parseInt(t1.substring(n - 1, n));
c = c - 1;
You forgot to print number of open tweets after input âCLOSEALLâ
I have added print statement and hereâs the accepted version of your code
Thanks a lot!!
most welcome
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(kâ){
cin>>str;
if(str ==âCLOSEALLâ){
boo.reset();
cout<<0<<"\n";
}
else{
int c;
cin>>c;
boo = boo.flip(1000-c);
cout<<boo.count();
cout<<endl;
}
}
return 0;
}