Description: I to the coordinates of the x-axis is the interval [i-1, i] of (1), and gives M (1 鈮� M 鈮� 200) integer, said the M interval. Allows you to draw several line segments cover all interval conditions are: each segment can be any length, but requires painting segment length and minimum, and the number of line segments does not exceed N (1 鈮� N 鈮� 50).
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区间覆盖问题.cpp
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