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The Tower of Babylon     Perhaps you have heard of the legend of the Tower of Babylon. Nowadays many details of this tale have been forgotten. So now, in line with the educational nature of this contes

Tour John Doe, a skilled pilot, enjoys traveling. While on vacation, he rents a small plane and starts visiting beautiful places. To save money, John must determine the shortest closed tour that connec

问题 L: 火车站时间限制: 1 Sec  内存限制: 128 MB提交: 13  解决: 7[提交][状态][讨论版]题目描述火车从始发站（称为第1站）开出，在始发站上车的人数为a，然后到达第2站，在第2站有人上、下车，但上、下车的人数相同，因此在第2站开出时（即在到达第3站之前）车上的人数保持为a人。从第3站起（包括第3站）上、下车的人数有一定规律：上车的人数都

Partitioning by Palindromes We say a sequence of characters is a palindrome if it is the same written forwards and backwards. For example,‘racecar’ is a palindrome, but‘fastcar’ is not. A partition o