Challenges arrys QUES2 :why is it showing test cases failed ,I think my code is sufficient

#1

#include<bits/stdc++.h>
using namespace std;

int main(){

 int m,n;//int f=INT_MIN;

cin>>m>>n;

int arr[11][11];

for(int i=0;i<m;i++)
for(int j=0;j<n;j++)cin>>arr[i][j];

for(int i=0;i<m;i++)
for(int j=0;j<n;j++){

    if(i%2==0)cout<<arr[j][i]<<", ";
    else cout<<arr[m-j-1][i]<<", ";
}
cout<<"END";

}

#2

Hey @argus see for test case:
2 3
1 2 3
4 5 6
Expected output is:
1, 4, 5, 2, 3, 6, END
Yours is giving is:
1, 4, 2068453797, 5, 2, -873098348, END
Debug accordingly you will know your mistake.

#3

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