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统计难题 Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 131070/65535 K (Java/Others) Total Submission(s): 56022    Accepted Submission(s): 19568   Problem Description Ignatius最近遇到一个难题,老师交给他很多单...

Word Puzzle Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 886    Accepted Submission(s): 226   Problem Description Did you heard of a litt...

Give a tree with n vertices,each edge has a length(positive integer less than 1001). Define dist(u,v)=The min distance between node u and v. Give an integer k,for every pair (u,v) of vertices is calle...