Uploaded July 2021 | Updated September 2026, 3 weeks ago

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Discussing codeforces.com/contest/1553

0:00 Intro
2:26 A. Digits Sum
4:25 B. Reverse String
13:14 C. Penalty
19:08 D. Backspace
23:12 E. Permutation Shift
32:03 F. Pairwise Modulo
1:01:07 G. Common Divisor Graph
1:13:11 H. XOR and Distance
1:39:35 I. Stairs
1:48:23 Summary

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