Problem Description 为了能过个好年，xhd开始复习了，于是每天晚上背着书往教室跑。xhd复习有个习惯，在复习完一门课后，他总是挑一门更简单的课进行复习，而他复习这门课的效率为两门课的难度差的平方,而复习第一门课的效率...

“Waiting for orders we held in the wood, word from the front never came By evening the sound of the gunfire was miles away Ah softly we moved through the sh...

Once upon a time, in the Kingdom of Loowater, a minor nuisance turned into a major problem.The shores of Rellau Creek in central Loowater had always been a prim...

Problem Description 为自行解决学费，chx勤工俭学收入10000元以1年定期存入银行，年利率为3.7% 。利率 按年计算，表示100元存1年的利息为3.7元.实际上有时提前有时推迟取，因此实际利息按天 计算，1年按365天计算，因此Q天的...

Problem Description As is known to all, Sempr(Liangjing Wang) had solved more than 1400 problems on POJ, but nobody know the days and nights he had spent on s...

Problem Description 给定一系列2维平面点的坐标(x, y)，其中x和y均为整数，要求用一个最小的长方形框将所有点框在内。长方形框的边分别平行于x和y坐标轴，点落在边上也算是被框在内。...

Problem Description Many classmates said to me that A+B is must needs. If you can’t AC this problem, you would invite me for night meal. ^_^

Problem Description Happy new year to everybody! Now, I want you to guess a minimum number x betwwn 1000 and 9999 to let (1) x % a = 0; (2) (x+1) % b = ...

Problem Description Are you excited when you see the title “AC” ? If the answer is YES , AC it ;

Problem Description 大家提到LTC都佩服的不行，不过，如果竞赛只有这一个题目，我敢保证你和他绝对在一个水平线上！ 你的任务是： 计算方程x^2+y^2+z^2= num的一个正整数解。...