0_0_18808537_149\Main.java:12: ´íÎó: ·Ç·¨×Ö·û: '\uff1b' double l = Math.sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2))£» ^ 1 ¸ö´íÎó