📈مسائلی که استاد شفیعی به عنوان تمرین بیشتر فرستادن:
موضوع DFS:
https://codeforces.com/problemset/problem/429/A
https://codeforces.com/problemset/problem/505/B
https://codeforces.com/problemset/problem/445/B
https://codeforces.com/problemset/problem/277/A
موضوع BFS:
https://codeforces.com/problemset/problem/602/C
https://codeforces.com/problemset/problem/198/B
https://codeforces.com/problemset/problem/35/C
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