About YAMANAKA Katsuhisa
About Iwate Univ., Iwate, JPN
About HORIYAMA Takashi
About Saitama Univ., Saitama, JPN
About UNO Takeaki
About National Inst. Informatics, Tokyo, JPN
About WASA Kunihiro
About National Inst. Informatics, Tokyo, JPN
About 電子情報通信学会技術研究報告
About problem
About computational complexity
About NP hard
About ladder approximation
About programming language
About pleasure
About application program
About permutation
About Ladder-Lottery実現問題
About computational complexity
About ladder diagram
About Puzzle
About gadget
About Theory of computation
About 問題
About 複雑さ