Codeforces 1221D - Make The Fence Great Again

2019-11-25

DP

• DP

CodeForces 1187E Tree Painting

2019-11-25

DP

• DP
• 树

Codeforces 1174D Ehab and the Expected XOR Problem

2019-11-23

数论

• 二进制

Codeforces 1257E - The Contest

2019-11-23

模拟

• 后缀
• 模拟

Codeforces 1257D - Yet Another Monster Killing Problem

2019-11-23

二分

• 二分
• 后缀
• 排序
• 模拟

Codeforces 1254B1 - Send Boxes to Alice (Easy Version)

2019-11-22

模拟

• 前缀
• 模拟