POJ 1384 Intervals (线性差分约束,根据不等式建图,而后跑spfa)

传送门:php http://acm.hdu.edu.cn/showproblem.php?pid=1384node Intervals Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 4841    Accepted Submissi
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