rt1400 Posted at 2026-01-02 # Codeforces 🏷️ Codeforces ⭐ Rating: 1400 🔗 题目链接：点击跳转 🏷️ Codeforces ⭐ Rating: 1400 🔗 题目链接：点击跳转 🏷️ Codeforces ⭐ Rating: 1400 🔗 题目链接：点击跳转 🏷️ Codeforces ⭐ Rating: 1400 🔗 题目链接：点击跳转