一行Python代码AC+TLE？

exec('import sys\nd=list(map(int,sys.stdin.read().split()))\nn,m,p=d[:3]\nf=[-999999]*(m+1);f[0]=0\nmoney=[[0]*(m+1) for _ in range(n+1)]\npay=[0]*(n+1)\nidx=3\nfor i in range(1,n+1):\n for j in range(1,m+1):money[i][j]=d[idx];idx+=1\nfor i in range(1,n+1):pay[i]=d[idx];idx+=1\nfor i in range(1,m+1):\n for j in range(1,n+1):\n  ff=n if j==1 else j-1\n  ss=money[ff][i]\n  for k in range(1,p+1):\n   if i-k<0:break\n   f[i]=max(f[i],f[i-k]+ss-pay[ff])\n   ff=n if ff==1 else ff-1\n   ss+=money[ff][i-k]\nprint(f[m])')