vis[x[t - 1]][y[t - 1]] = 1;
by ruby2011 @ 2023-09-22 08:00:18
if(tt!=t && t<=2*n-2)
{
vis[x[t]][y[t]]=true;
t=tt;
}
by ruby2011 @ 2023-09-22 08:02:06
把这一句换换试试
by ruby2011 @ 2023-09-22 08:02:56