DeepSeek-R1-Distill-Llama-8B效果展示：CodeForces中动态规划题的伪代码→Python转换-平芜编程栈

DeepSeek-R1-Distill-Llama-8B效果展示：CodeForces中动态规划题的伪代码→Python转换

1. 模型能力概览

DeepSeek-R1-Distill-Llama-8B是我们基于Llama架构开发的推理专用模型，专注于解决数学、编程和逻辑推理任务。在CodeForces编程竞赛题目上，该模型展现了出色的伪代码理解与Python转换能力，评分达到1205分，超越了同类许多模型。

这个8B参数的蒸馏模型特别擅长：

理解算法竞赛中的问题描述
将伪代码逻辑准确转换为可执行Python代码
处理动态规划等复杂算法结构
生成符合竞赛标准的高效实现

2. 动态规划案例展示

2.1 经典背包问题转换

问题描述：给定一组物品，每个物品有重量和价值，在不超过背包容量前提下最大化总价值。

伪代码输入：

function knapsack(weights, values, capacity): n = length(weights) dp = array of size (n+1) x (capacity+1) initialized to 0 for i from 1 to n: for w from 1 to capacity: if weights[i-1] <= w: dp[i][w] = max(values[i-1] + dp[i-1][w-weights[i-1]], dp[i-1][w]) else: dp[i][w] = dp[i-1][w] return dp[n][capacity]

模型生成的Python代码：

def knapsack(weights, values, capacity): n = len(weights) dp = [[0] * (capacity + 1) for _ in range(n + 1)] for i in range(1, n + 1): for w in range(1, capacity + 1): if weights[i-1] <= w: dp[i][w] = max(values[i-1] + dp[i-1][w-weights[i-1]], dp[i-1][w]) else: dp[i][w] = dp[i-1][w] return dp[n][capacity]

转换亮点：

准确保持了原始伪代码的二维DP结构
正确处理了Python的0-based索引调整
初始化二维列表的方式符合Python最佳实践
边界条件处理与伪代码完全一致

2.2 最长递增子序列问题

伪代码输入：

function LIS(nums): dp = array of size len(nums) initialized to 1 for i from 1 to len(nums): for j from 0 to i: if nums[j] < nums[i]: dp[i] = max(dp[i], dp[j] + 1) return max(dp)

模型生成的Python代码：

def longest_increasing_subsequence(nums): if not nums: return 0 dp = [1] * len(nums) for i in range(1, len(nums)): for j in range(i): if nums[j] < nums[i]: dp[i] = max(dp[i], dp[j] + 1) return max(dp)

改进之处：

添加了空输入检查的防御性编程
保持了O(n^2)的标准解法结构
变量命名更符合Python风格
边界条件处理得当

3. 复杂案例：区间调度问题

3.1 加权区间调度转换

伪代码输入：

function weightedIntervalScheduling(intervals): sort intervals by finish time n = length(intervals) dp = array of size n for i from 0 to n-1: include = intervals[i].weight last = binarySearch(intervals, i) if last != -1: include += dp[last] dp[i] = max(include, dp[i-1] if i > 0 else 0) return dp[n-1]

模型生成的Python代码：

def weighted_interval_scheduling(intervals): intervals.sort(key=lambda x: x[1]) # sort by finish time n = len(intervals) dp = [0] * n def binary_search(arr, i): low, high = 0, i - 1 while low <= high: mid = (low + high) // 2 if arr[mid][1] <= arr[i][0]: if arr[mid + 1][1] <= arr[i][0]: low = mid + 1 else: return mid else: high = mid - 1 return -1 for i in range(n): include = intervals[i][2] # assuming weight is at index 2 last = binary_search(intervals, i) if last != -1: include += dp[last] dp[i] = max(include, dp[i-1] if i > 0 else 0) return dp[-1]

转换亮点：