An integrated circuit including a first standard cell placed continuously on a row having a first height and a row having a second height different from the first height. The integrated circuit also includes a second standard cell continuously placed on a row having the first height and a row having the second height, a plurality of first power lines formed on boundaries of the plurality of rows and configured to supply a first supply voltage to the standard cells, and a plurality of second power lines formed on boundaries of the plurality of rows and configured to supply a second supply voltage to the standard cells. A placement sequence of the power lines supplying a voltage to the first standard cell being different from a placement sequence of the power lines supplying a voltage to the second standard cell.