Function to find the largest square in the matrix such that it contains atmost K 1 's
function largestSquare ( matrix , R , C , q_i , q_j , K , Q ) { let countDP = new Array ( R ) ; for ( let i = 0 ; i < R ; i ++ ) { countDP [ i ] = new Array ( C ) ; for ( let j = 0 ; j < C ; j ++ ) countDP [ i ] [ j ] = 0 ; }