4. Arrange the odd numbers in the order shown in Figure 4, from top to bottom, referred to as rows. In the figure, the number 11 is the 2nd number from left to right in the 3rd row, and the number 29 is the 6th number in the 4th row. Therefore, 2003 is the
$\qquad$th row and the
$\qquad$th number.
(提示: 2003 is the 1002nd number when counting from top to bottom and from left to right in the number array, the first $n$ rows contain $1+3+\cdots+(2 n-1)=n^{2}$ numbers, and $31^{2}=961, 32^{2}=1024$, so 2003 is located in the 32nd row as the $1002-961=41$st number.)