2015 ACM-ICPC Asia Beijing Regional Contest
Problem A
Solved by Xiejiadong. 01:24:36(+)
题意:沿$x$轴把沙漠分成两块,使得两边的绿地面积之差最小。
题解:根据给出的绿地坐标,在开始位置和结束位置分别打上tag,然后枚举所有的分割点,找到最小差的位置就可以了。
时间复杂度$O(R)$。
Problem B
Unsolved.
Problem C
Solved by oxx1108. 04:23:23(+3)
Problem D
Upsolved by dreamcloud.
Problem E
Unsolved.
Problem F
Unsolved.
Problem G
Solved by Xiejiadong. 02:37:08(+)
题意:给出四个矩形,问是否存在三个矩形,可以拼成一个更大的矩形。
题解:拼起来的方式无非下面两种:
1)三个串起来,即某一维相等。
2)一个在上方,两个在下方,即某两个的两个维度之和等于第三个维度,且这两个的另一个维度相等。
暴力,比较繁琐。
Problem H
Unsolved.
Problem I
Solved by dreamcloud. 03:34:10(+4)
Problem J
Solved by Xiejiadong. 00:27:41(+)
Problem K
Solved by dreamcloud. 04:45:00(+4)