408384: GYM103109 L Pillar Path

Memory Limit:512 MB Time Limit:5 S
Judge Style:Text Compare Creator:
Submit:0 Solved:0

Description

L. Pillar Pathtime limit per test5 secondsmemory limit per test512 megabytesinputstandard inputoutputstandard outputExampleInput
3
3 15 17 1
5 11 3 5
11 10 2 4
13 4 4 1
Output
21.351991750

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