public static int countOddSquares ( int n , int m ) {
  return ( int ) Math . pow ( ( double ) m , 0.5 ) - ( int ) Math . pow ( ( double ) n - 1 , 0.5 ) ;
}

public static int countOddSquares ( int n , int m ) { return ( int ) Math . pow ( ( double ) m , 0.5 ) - ( int ) Math . pow ( ( double ) n - 1 , 0.5 ) ; }
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