Four Square
면접 대비시간 제한4초메모리 제한2048 MB
회전할 수 있는 직사각형 네 개가 빈틈이나 겹침 없이 정사각형을 이루도록 배치할 수 있는지 판정한다.
문제
Inspired by a Piet Mondrian painting, you want to make a four-pane window out of four colored rectangles of glass. You are given the sizes of the four panes of glass. Can you arrange them into a square? You may rotate the panes. The panes should cover the entire square without overlap.
입력
The input consists of exactly four lines. Each of the four lines contains two integers and (), representing the width and height of one of the four rectangular panes of glass.
출력
Output a single integer, which is if the four panes can be arranged to form a square, and otherwise.