Hello CF community, in this blog post I tried to gather the Questions I've solved and enjoyed them↵
most of them are really teaching and worth spending hours of time on them↵
Hope you enjoy↵
↵
**EDIT: Part 2 added, [link](https://mirror.codeforces.com/blog/entry/129921)**↵
↵
<spoiler summary="Problems">↵
[problem:1418C] ↵
[problem:1311D] ↵
[problem:474D] ↵
[problem:343C] ↵
[problem:1918D] ↵
[problem:515C] ↵
[problem:1156C] ↵
[problem:1853C] ↵
[problem:1843E] ↵
[problem:1843F1] ↵
[problem:1884D] ↵
[problem:1884C] ↵
[problem:372A] ↵
[problem:455A] ↵
[problem:1886D] ↵
[problem:1624D] ↵
[problem:448D] ↵
[problem:1092D1] ↵
[problem:479E] ↵
[problem:1907E] ↵
[problem:1520F1] ↵
[problem:1520F2] ↵
[problem:1201C] ↵
[problem:1374D] ↵
[problem:1922D] ↵
[problem:1705C] ↵
[problem:380A] ↵
[problem:747F] ↵
[problem:1920D] ↵
[problem:1920C] ↵
[problem:831C] ↵
[problem:1398C] ↵
[problem:1000C] ↵
[problem:1526C2] ↵
[problem:368B] ↵
[problem:1324D] ↵
[problem:520B] ↵
[problem:1901D] ↵
[problem:1919C] ↵
[problem:1574C] ↵
[problem:1076C] ↵
[problem:1349A] ↵
[problem:1358C] ↵
[problem:1458A] ↵
[problem:1539D] ↵
[problem:1537E1] ↵
[problem:1497C2] ↵
[problem:1285C] ↵
</spoiler>↵
↵
↵
↵
Note that to solve these problems you need no knowledge except: ↵
9th grade math, a little bit number theory, sorting, elementary dp, elementary bs, set, stack, queue, map↵
↵
Good luck and hope you enjoy them↵
↵
↵
EDIT: I added maybe a few problems, I ran out of beautiful problems, unfortunately, maybe suggest in the comments and I'll add them↵
↵
<spoiler summary="new ones">↵
[problem:1541B] ↵
[problem:1906A] ↵
[problem:1902C] ↵
[problem:1899B] ↵
[problem:1692F] ↵
[problem:1864C]↵
</spoiler>↵
↵
↵
**Guys a question: do u want me to include recent contests as well?**
most of them are really teaching and worth spending hours of time on them↵
Hope you enjoy↵
↵
**EDIT: Part 2 added, [link](https://mirror.codeforces.com/blog/entry/129921)**↵
↵
<spoiler summary="Problems">↵
[problem:1418C] ↵
[problem:1311D] ↵
[problem:474D] ↵
[problem:343C] ↵
[problem:1918D] ↵
[problem:515C] ↵
[problem:1156C] ↵
[problem:1853C] ↵
[problem:1843E] ↵
[problem:1843F1] ↵
[problem:1884D] ↵
[problem:1884C] ↵
[problem:372A] ↵
[problem:455A] ↵
[problem:1886D] ↵
[problem:1624D] ↵
[problem:448D] ↵
[problem:1092D1] ↵
[problem:479E] ↵
[problem:1907E] ↵
[problem:1520F1] ↵
[problem:1520F2] ↵
[problem:1201C] ↵
[problem:1374D] ↵
[problem:1922D] ↵
[problem:1705C] ↵
[problem:380A] ↵
[problem:747F] ↵
[problem:1920D] ↵
[problem:1920C] ↵
[problem:831C] ↵
[problem:1398C] ↵
[problem:1000C] ↵
[problem:1526C2] ↵
[problem:368B] ↵
[problem:1324D] ↵
[problem:520B] ↵
[problem:1901D] ↵
[problem:1919C] ↵
[problem:1574C] ↵
[problem:1076C] ↵
[problem:1349A] ↵
[problem:1358C] ↵
[problem:1458A] ↵
[problem:1539D] ↵
[problem:1537E1] ↵
[problem:1497C2] ↵
[problem:1285C] ↵
</spoiler>↵
↵
↵
↵
Note that to solve these problems you need no knowledge except: ↵
9th grade math, a little bit number theory, sorting, elementary dp, elementary bs, set, stack, queue, map↵
↵
Good luck and hope you enjoy them↵
↵
↵
EDIT: I added maybe a few problems, I ran out of beautiful problems, unfortunately, maybe suggest in the comments and I'll add them↵
↵
<spoiler summary="new ones">↵
[problem:1541B] ↵
[problem:1906A] ↵
[problem:1902C] ↵
[problem:1899B] ↵
[problem:1692F] ↵
[problem:1864C]↵
</spoiler>↵
↵
↵
**Guys a question: do u want me to include recent contests as well?**
