@[jyz2012](/user/954973) `dp[1][n]` 显然不满足 `dp[i][i+n]`，不会计入答案 by elbissoPtImaerD @ 2023-06-06 20:20:45
明白了，谢谢 by jyz2012 @ 2023-06-06 20:23:07