InternBootcamp/internbootcamp/bootcamp/frésuméreview/frésuméreview.py
2025-05-23 15:27:15 +08:00

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"""#
### 谜题描述
Uh oh! Applications to tech companies are due soon, and you've been procrastinating by doing contests instead! (Let's pretend for now that it is actually possible to get a job in these uncertain times.)
You have completed many programming projects. In fact, there are exactly n types of programming projects, and you have completed a_i projects of type i. Your résumé has limited space, but you want to carefully choose them in such a way that maximizes your chances of getting hired.
You want to include several projects of the same type to emphasize your expertise, but you also don't want to include so many that the low-quality projects start slipping in. Specifically, you determine the following quantity to be a good indicator of your chances of getting hired:
$$$ f(b_1,…,b_n)=∑_{i=1}^n b_i(a_i-b_i^2). $$$
Here, b_i denotes the number of projects of type i you include in your résumé. Of course, you cannot include more projects than you have completed, so you require 0≤ b_i ≤ a_i for all i.
Your résumé only has enough room for k projects, and you will absolutely not be hired if your résumé has empty space, so you require ∑_{i=1}^n b_i=k.
Find values for b_1,…, b_n that maximize the value of f(b_1,…,b_n) while satisfying the above two constraints.
Input
The first line contains two integers n and k (1≤ n≤ 10^5, 1≤ k≤ ∑_{i=1}^n a_i) — the number of types of programming projects and the résumé size, respectively.
The next line contains n integers a_1,…,a_n (1≤ a_i≤ 10^9) — a_i is equal to the number of completed projects of type i.
Output
In a single line, output n integers b_1,…, b_n that achieve the maximum value of f(b_1,…,b_n), while satisfying the requirements 0≤ b_i≤ a_i and ∑_{i=1}^n b_i=k. If there are multiple solutions, output any.
Note that you do not have to output the value f(b_1,…,b_n).
Examples
Input
10 32
1 2 3 4 5 5 5 5 5 5
Output
1 2 3 3 3 4 4 4 4 4
Input
5 8
4 4 8 2 1
Output
2 2 2 1 1
Note
For the first test, the optimal answer is f=-269. Note that a larger f value is possible if we ignored the constraint ∑_{i=1}^n b_i=k.
For the second test, the optimal answer is f=9.
Here is a reference code to solve this task. You can use this to help you genereate cases or validate the solution.
```python
#include <bits/stdc++.h>
using namespace std;
const int maxn = 100005;
const long long mod = 1e9 + 7;
int n;
long long a[maxn], sol[maxn], aux[maxn];
long long delta(int i, long long x) { return a[i] - 3 * x * x + 3 * x - 1; }
long long bb(long long d, int id) {
if (a[id] - 1 <= d) return 0;
long long ini = 0, fin = a[id], ret = -1;
while (ini <= fin) {
long long mit = (ini + fin) / 2;
if (delta(id, mit) >= d) {
ret = mit, ini = mit + 1;
} else
fin = mit - 1;
}
return ret;
}
long long up(long long v) {
long long ret = 0;
for (int i = 1; i <= n; i++) {
long long c = bb(v, i);
sol[i] = min(a[i], c);
ret += sol[i];
}
return ret;
}
void prnt(vector<long long> &v) {
for (auto &i : v) cerr << i << \" \";
cerr << \"\n\";
}
long long bi[maxn];
long long evbi() {
long long ret = 0;
for (int i = 1; i <= n; i++) ret += bi[i] * (a[i] - bi[i] * bi[i]);
return ret;
}
long long evsol(vector<long long> sol) {
long long ret = 0;
for (int i = 1; i <= n; i++) ret += sol[i] * (a[i] - sol[i] * sol[i]);
return ret;
}
int main() {
cin.tie(0);
ios_base::sync_with_stdio(0);
long long k;
cin >> n >> k;
for (int i = 1; i <= n; i++) cin >> a[i];
long long ini = -4e18, fin = 4e18;
long long delt = 0;
while (ini <= fin) {
long long mit = (ini + fin) / 2;
if (up(mit) >= k) {
delt = mit;
ini = mit + 1;
} else
fin = mit - 1;
}
up(delt);
long long acc = 0;
for (int i = 1; i <= n; i++) acc += sol[i];
long long quitar = acc - k;
assert(quitar >= 0);
priority_queue<pair<long long, long long>,
vector<pair<long long, long long> >,
greater<pair<long long, long long> > >
q;
for (int i = 1; i <= n; i++) {
if (sol[i]) q.push({delta(i, sol[i]), i});
}
for (int i = 1; i <= quitar; i++) {
pair<long long, long long> v = q.top();
q.pop();
sol[v.second]--;
if (sol[v.second]) q.push({delta(v.second, sol[v.second]), v.second});
}
for (int i = 1; i <= n; i++) cout << sol[i] << \" \n\"[i == n];
return 0;
}
```
请完成上述谜题的训练场环境类实现,包括所有必要的方法。
"""
from bootcamp import Basebootcamp
import random
import re
from bootcamp import Basebootcamp
class Frésuméreviewbootcamp(Basebootcamp):
def __init__(self, **params):
super().__init__()
self.n_min = params.get('n_min', 1)
self.n_max = params.get('n_max', 10)
self.a_min = params.get('a_min', 1)
self.a_max = params.get('a_max', 100)
self.seed = params.get('seed', None)
if self.seed is not None:
random.seed(self.seed)
def case_generator(self):
n = random.randint(self.n_min, self.n_max)
a = [random.randint(self.a_min, self.a_max) for _ in range(n)]
total = sum(a)
if total == 0:
k = 0
else:
k = random.randint(1, total)
return {
'n': n,
'k': k,
'a': a
}
@staticmethod
def prompt_func(question_case):
n = question_case['n']
k = question_case['k']
a = ' '.join(map(str, question_case['a']))
prompt = (
"你是正在申请技术公司的程序员,需要在简历中选择项目。"
f"你有{n}种类型的项目每种类型i有a_i个完成的项目。你需要选择b_i个放入简历"
f"使得总和为{k}并且每个b_i不超过a_i。目标函数是f(b₁,…,bₙ)=∑b_i(a_i -b_i²)。"
"你需要找出这样的b数组使得f最大化。\n"
f"具体数值如下n={n}, k={k}, a数组为{a}\n"
"请输出你的答案,格式为[answer]b1 b2 ... bn[/answer]。"
)
return prompt
@staticmethod
def extract_output(output):
matches = re.findall(r'\[answer\](.*?)\[\/answer\]', output, re.DOTALL)
if not matches:
return None
answer_str = matches[-1].strip()
try:
b = list(map(int, answer_str.split()))
return b
except:
return None
@classmethod
def _verify_correction(cls, solution, identity):
if solution is None:
return False
n = identity['n']
k = identity['k']
a = identity['a']
if len(solution) != n:
return False
total = sum(solution)
if total != k:
return False
for i in range(n):
if solution[i] < 0 or solution[i] > a[i]:
return False
return True