interval covering algorithm (help please)

Revision en1, by Failure-Man, 2016-11-10 21:20:29

there are many problem like. https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=3743

but every time i failed to solve this type. is there any algorithm to solve this tye of problem????

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en2 English Failure-Man 2016-11-10 21:21:35 2
en1 English Failure-Man 2016-11-10 21:20:29 273 Initial revision (published)