Why Is This Supercomputer So Superfast?Cray employees put the finishing touches on Titan at the Department of Energys Oak Ridge National Laboratory in Tennessee. The supercomputer may be the worlds fastest. Its designed to do 20 petaflops — or 20,000 tri…
统计难题 Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 131070/65535 K (Java/Others) Total Submission(s): 34909 Accepted Submission(s): 13109 Problem Description Ignatius最近遇到一个难题,老师交给他很多单词(只有小写字母组成,不会有重复的单词出现)…