推荐先完成上节课的课后作业，再来学习本节，效率更高！
本期介绍了【0-1 背包】和【完全背包】，包括【空间优化】以及【至多/恰好/至少】等常见变形题目的讲解。
Python/Java/C++/Go 代码：
494. 目标和 https://leetcode.cn/problems/target-sum/solution/jiao-ni-yi-bu-bu-si-kao-dong-tai-gui-hua-s1cx/
322. 零钱兑换 https://leetcode.cn/problems/coin-change/solution/jiao-ni-yi-bu-bu-si-kao-dong-tai-gui-hua-21m5/
课后作业：
2915. 和为目标值的最长子序列的长度 https://leetcode.cn/problems/length-of-the-longest-subsequence-that-sums-to-target/
416. 分割等和子集 https://leetcode.cn/problems/partition-equal-subset-sum/
2787. 将一个数字表示成幂的和的方案数 https://leetcode.cn/problems/ways-to-express-an-integer-as-sum-of-powers/
518. 零钱兑换 II https://leetcode.cn/problems/coin-change-ii/
279. 完全平方数 https://leetcode.cn/problems/perfect-squares/
课后作业题解：
2915. 和为目标值的最长子序列的长度 https://leetcode.cn/problems/length-of-the-longest-subsequence-that-sums-to-target/solution/mo-ban-qia-hao-zhuang-man-xing-0-1-bei-b-0nca/
416. 分割等和子集 https://leetcode.cn/problems/partition-equal-subset-sum/solution/0-1-bei-bao-cong-ji-yi-hua-sou-suo-dao-d-ev76/
518. 零钱兑换 II https://leetcode.cn/problems/coin-change-ii/solution/shi-pin-wan-quan-bei-bao-cong-ji-yi-hua-o3ew0/
279. 完全平方数 https://leetcode.cn/problems/perfect-squares/solution/dong-tai-gui-hua-cong-ji-yi-hua-sou-suo-3kz1g/
力扣最全 DP 题单：
https://leetcode.cn/circle/discuss/tXLS3i/
【基础算法精讲】题目+题解汇总：
https://github.com/EndlessCheng/codeforces-go/blob/master/leetcode/README.md
