Problems
Permutations with Given Distance#101
Medium · Dynamic programming
Polyhedron#102
Hard · Geometry
Process Simulation#103
Medium · Matrix
Rope Pulling – 2#104
Very hard · Graphs
Sets in a four-partite graph#105
Very hard · Graphs · Combinatorics
Chips#106
Very hard · Graphs
Compact discs#107
Very easy
Median number#108
Very easy · For Beginners
Page Numbering#109
Very easy · Math
Game#110
Easy
Clocks#111
Easy · Math
Cake#112
Very easy · Math
Balloons#113
Very easy · Implementation
The Enchanted Vault#114
Hard · Number theory · Math
Two digits#115
Very easy · Dynamic programming
Long number#116
Easy · Math
Raft#117
Very easy · Math
Game - 2#118
Easy · Games
Power of two#119
Medium · Math
N-digit numbers - 2#120
Medium · Dynamic programming
CD exchange#121
Easy · Graphs
Mountain routes#122
Easy · Depth-first Search · Brute force
Number of trailing zeros in factorial#123
Very easy · Number theory · Math
Square#124
Easy · Combinatorics
Olympiad#125
Very easy · Implementation
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