codeforces 7
- Codeforces Round 1039 Problem "Recycling Center"
- Codeforces Round 1037 Problem "1-1-1, Free Tree!"
- Codeforces Round 1037 Problem "G-C-D, Unlucky!"
- Codeforces Round 1037 Problem "This is the Last Time"
- Codeforces Round 1037 Problem "I will Definitely Make It"
- Codeforces Round 1037 Problem "No Casino in the Mountains"
- Codeforces Round 1037 Problem "Only One Digit"