是DP
by Colas_miao_ @ 2023-02-16 12:43:56
@[I_is_Chen_Yang](/user/702822)
粗略的看一下，没有系统分析。
1. 数组开小了，起码 $101\times101$
2. `if(a[i-f[i-1][j]][i-f[i-1][j]]==0) f[i][j]=f[i-1][j];`a 数组两维内都写的 `i-xxx`
by 2018ljw @ 2023-02-16 12:50:00
蟹蟹
by Colas_miao_ @ 2023-02-16 12:53:47