专题文章
时长:00:00更新时间:2020-11-09 07:59:00
B.AmrandPins(CodeforcesRound#287(div2)):Amr loves Geometry. One day he came up with a very interesting problem. Amr has a circle of radius r and center in point ( x , y ) . He wants the circle center to be in new position ( x ', y ') . In one step Amr can put a pin to the bord
查看详情