You want to schedule a list of jobs in d days. Jobs are dependent (i.e To work on the i-th job, you have to finish all the jobs j where 0 <= j < i).
You have to finish at least one task every day. The difficulty of a job schedule is the sum of difficulties of each day of the d days. The difficulty of a day is the maximum difficulty of a job done in that day.
Given an array of integers jobDifficulty and an integer d. The difficulty of the i-th job is jobDifficulty[i].
Return the minimum difficulty of a job schedule. If you cannot find a schedule for the jobs return -1.
 
Example 1:

Input: jobDifficulty = [6,5,4,3,2,1], d = 2
Output: 7
Explanation: First day you can finish the first 5 jobs, total difficulty = 6.
Second day you can finish the last job, total difficulty = 1.
The difficulty of the schedule = 6 + 1 = 7 

Example 2:
Input: jobDifficulty = [9,9,9], d = 4
Output: -1
Explanation: If you finish a job per day you will still have a free day. you cannot find a schedule for the given jobs.

Example 3:
Input: jobDifficulty = [1,1,1], d = 3
Output: 3
Explanation: The schedule is one job per day. total difficulty will be 3.

Example 4:
Input: jobDifficulty = [7,1,7,1,7,1], d = 3
Output: 15

Example 5:
Input: jobDifficulty = [11,111,22,222,33,333,44,444], d = 6
Output: 843

 
Constraints:

1 <= jobDifficulty.length <= 300
0 <= jobDifficulty[i] <= 1000
1 <= d <= 10

```python

USER_FILENAME = "<user_code>"
import sys, json, builtins
import math, heapq, bisect, itertools, functools, collections, statistics, fractions, decimal, operator, array, random, re, string, os, pathlib
try:
    import resource as _res
except Exception:
    _res = None
from collections import Counter, defaultdict, deque, OrderedDict
from functools import lru_cache, reduce
from itertools import accumulate, permutations, combinations, product
from math import gcd, ceil, floor, sqrt
from decimal import Decimal
try:
    from typing import *
except Exception:
    pass
try:
    sys.setrecursionlimit(1_000_000)
except Exception:
    pass
try:
    import site as _site
    try:
        _sys_sites = _site.getsitepackages() if hasattr(_site, "getsitepackages") else []
        for _p in _sys_sites:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
    try:
        _usp = _site.getusersitepackages()
        if isinstance(_usp, str):
            _usp = [_usp]
        for _p in _usp:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
except Exception:
    pass

def _disabled_input(*args, **kwargs):
    raise RuntimeError("input() is disabled in callable mode")
builtins.input = _disabled_input

ns = {"__name__": "__judge__"}  # prevent if __name__ == "__main__" blocks
for _k, _v in list(globals().items()):
    if not _k.startswith("_"):
        ns[_k] = _v
_CODE = 'class Solution:\n    def minDifficulty(self, jobDifficulty: List[int], d: int) -> int:\n        if d > len(jobDifficulty):\n            return -1\n        \n        dp = [[0] * (len(jobDifficulty)) for _ in range(d)]\n        \n        dp[0][0] = jobDifficulty[0]\n        for i in range(1,len(jobDifficulty)):\n            dp[0][i] = max(dp[0][i-1], jobDifficulty[i])\n\n        for di in range(1, d):\n            for j in range(di, len(jobDifficulty)):\n                localMax = jobDifficulty[j];\n                dp[di][j] = 10*1000 + 1;\n                for r in range(j, di-1, -1):\n                    localMax = max(localMax, jobDifficulty[r]);\n                    dp[di][j] =  min(dp[di][j], dp[di-1][r-1] + localMax);\n                #dp[di][j] = jobDifficulty[j - 1] + dp[di - 1][j-1]\n        return dp[-1][-1]\n    \n    #int localMax = jobDifficulty[j];\n    #            dp[i][j] = Integer.MAX_VALUE;\n    #            for(int r = j; r >= i; r--){\n    #                localMax = Math.max(localMax,jobDifficulty[r]);\n    #                dp[i][j] =  Math.min(dp[i][j],dp[i-1][r-1] + localMax);\n    #            }class Solution {\n    #public int minDifficulty(int[] jobDifficulty, int d) {\n        \n#\\t\\tint n = jobDifficulty.length; \n #       if(n < d) return -1;\n#        int[][] dp = new int[d][n];\n#        \n#        dp[0][0] = jobDifficulty[0];\n#        for(int i = 1; i < n; i++){\n#            dp[0][i] = Math.max(jobDifficulty[i],dp[0][i-1]);\n#        }\n        \n#        for(int i = 1; i < d; i++){\n#            for(int j = i; j < n; j++){\n#                int localMax = jobDifficulty[j];\n#                dp[i][j] = Integer.MAX_VALUE;\n#                for(int r = j; r >= i; r--){\n#                    localMax = Math.max(localMax,jobDifficulty[r]);\n#                    dp[i][j] =  Math.min(dp[i][j],dp[i-1][r-1] + localMax);\n#                }\n#            }\n#        }\n        \n#        return dp[d-1][n-1];\n#    }\n#}\n'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'minDifficulty'
if _fn_name:
    if "Solution" in ns:
        try:
            _obj = ns["Solution"]()
            if hasattr(_obj, _fn_name):
                _target = getattr(_obj, _fn_name)
        except Exception:
            _target = None
    if _target is None and _fn_name in ns and callable(ns[_fn_name]):
        _target = ns[_fn_name]
# Fallback: if there's exactly one user-defined function, use it
if _target is None:
    _cands = [v for k, v in ns.items() if callable(v) and getattr(v, "__module__", "") in ("__judge__", "__main__")]
    _user_funcs = [c for c in _cands if getattr(c, "__name__", "").startswith("_") is False]
    if len(_user_funcs) == 1:
        _target = _user_funcs[0]
if _target is None:
    raise RuntimeError(f"Could not resolve callable '{_fn_name}'")

_raw = sys.stdin.read().strip()
if _raw:
    _parsed = json.loads(_raw)
    if isinstance(_parsed, dict):
        _kwargs = _parsed.get("kwargs", {})
        _args = _parsed.get("args", [])
    else:
        _args, _kwargs = _parsed, {}
else:
    _args, _kwargs = [], {}
if not isinstance(_args, (list, tuple)):
    _args = [_args]
_res = _target(*_args, **_kwargs)
try:
    sys.stdout.write(repr(_res) + "\n")
except Exception:
    pass

```

Measured memory_bytes: 6234