Problems
The Computer Game#376
Very hard · Combinatorics · Graphs
The Bad Number#377
Easy · Math · Greedy algorithms
Mysterious Note#378
Very easy · Implementation · Strings
Fault protection#379
Easy · Implementation · Strings
Clash of the Titans#380
Very easy · Greedy algorithms
Transformation#388
Very easy · Implementation · Math
Decomposition into simple addends#389
Medium · Dynamic programming
Anagrams#390
Medium · Combinatorics
Calculator#391
Very easy · Implementation
Gifts#392
Very easy · Dynamic programming
Reform of the English Language#393
Hard · Implementation
Purchase on credit#394
Very easy · Implementation
"Prime" numbers#395
Very easy · Brute force
Rain#396
Very easy · Implementation
Sum#397
Very hard · Implementation
Cake for Sergei#398
Very easy · Combinatorics
Bracket Sequences#399
Very easy · Combinatorics · Dynamic programming
The Travels of the Gnomes#400
Easy · Combinatorics
Space Station Docking Bay Configuration#401
Very easy · Dynamic programming
Complete Tree Labeling#402
Medium · Combinatorics · Trees · Graphs
Agent#403
Easy · Dynamic programming
Construction#404
Very easy · Implementation
Crazy Frog#405
Very easy · Dynamic programming
Directions#406
Medium · Graphs · Greedy algorithms
Exchange#407
Very easy · For Beginners