P9840 [ICPC2021 Nanjing R] Oops, It‘s Yesterday Twice More题解
[ICPC2021NanjingR]Oops,It’sYesterdayTwiceMore传送门题面翻译有一张n×nn\timesnn×n的网格图,每个格子上都有一只袋鼠。对于一只在(i,j)(i,j)(i,j)的袋鼠,有下面四个按钮:按钮U:如果i>1i>1i>1,移动到(i−1,j)(i-1,j)(i−1,j),否则,原地不动;按钮D:如果i1j>1j>1,移动到(i,j−1)(i,j-1)(