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5874:Friends and Enemies

题目描述
On an isolated island, lived some dwarves. A king (not a dwarf) ruled the island and the seas nearby, there are abundant cobblestones of varying colors on the island. Every two dwarves on the island are either friends or enemies. One day, the king demanded that each dwarf on the island (not including the king himself, of course) wear a stone necklace according to the following rules:
  
  For any two dwarves, if they are friends, at least one of the stones from each of their necklaces are of the same color; and if they are enemies, any two stones from each of their necklaces should be of different colors. Note that a necklace can be empty.
  
  Now, given the population and the number of colors of stones on the island, you are going to judge if it's possible for each dwarf to prepare himself a necklace.
输入解释
Multiple test cases, process till end of the input.
  
  For each test case, the one and only line contains 2 positive integers $M, N\ (M,N<2^{31})$ representing the total number of dwarves (not including the king) and the number of colors of stones on the island.
输出解释
For each test case, The one and only line of output should contain a character indicating if it is possible to finish the king's assignment. Output ``T" (without quotes) if possible, ``F" (without quotes) otherwise.
输入样例
20 100
输出样例
T
来自杭电HDUOJ的附加信息
Recommend wange2014

该题目是Virtual Judge题目,来自 杭电HDUOJ

源链接: HDU-5874

最后修改于 2020-10-25T23:26:21+00:00 由爬虫自动更新

共提交 0

通过率 --%
时间上限 内存上限
2000/1000MS(Java/Others) 65536/65536K(Java/Others)