Code not working when element is not prresent in given array!

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@kunaldude04 in line number 22 you have written if( i== n-1 & j == m-1) , change it to
if( i== n-1 && j == m-1)
Also, in line number 31 you have written if(flag=1) change it to if(flag==1), and your code will work fine.
Hope this helps.