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2202
Programming Technology
Very hard
2203
Roads
Easy
2204
Weak k-connectivity
Very easy
2205
Elevator
Easy
2206
Minibuses
Very easy
2207
Electric train
Very easy
2208
Taxi
Very easy
2209
Elevators
Easy
2210
Self-decrypted cipher
Easy
2211
The largest sawtooth subsequence
Easy
2212
Tariffs
Hard
2213
Three-dimensional rooks
Medium
2214
Function 9
Easy
2215
Foreign Languages
Easy
2217
Attack of aliens
Very easy
2218
Coins
2219
Snow White and n gnomes
2220
Playing with graph
Medium
2221
About love...
Hard
2222
Matches for children are not toys!
Easy
2223
Maze
Easy
2224
Number
Easy
2225
Beautiful numbers
Medium
2226
Zoo
Easy
2227
Necklace of Beads
1
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