受 Piet Mondrian 画作的启发，你想要用四块彩色玻璃矩形制作一个四格窗户。 你已知这四块玻璃的大小。你能否将它们拼成一个正方形？你可以旋转这些玻璃。这些玻璃必须覆盖整个正方形且不能重叠。
输入包含四行。每行包含两个整数 $w$ 和 $h$ ($1 \le w, h \le 1\,000$)，分别表示四块矩形玻璃中每一块的宽度和高度。
输出一个整数，如果这四块玻璃可以拼成一个正方形，则输出 1，否则输出 0。
1 1 1 1 1 1 1 1
1
3 1 3 3 2 2 3 3
0
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