摘要：题目链接：https://pintia.cn/problem-sets/994805260223102976/problems/994805318855278592 阅读全文

摘要：题目链接：https://pintia.cn/problem-sets/994805260223102976/problems/994805321640296448 阅读全文

摘要：题目链接：https://pintia.cn/problem-sets/994805260223102976/problems/994805324509200384 阅读全文

摘要：题目链接：https://pintia.cn/problem-sets/994805342720868352/problems/994805528788582400 Calculate a+b and output the sum in standard format -- that is, the 阅读全文