摘要：
Not so MobileBefore being an ubiquous communications gadget, amobilewas just a structure made of strings and wires suspending colourfull things. This ... 阅读全文
摘要：
Evaluating Simple C ExpressionsThe task in this problem is to evaluate a sequence of simple C expressions, buy you need not know C to solve the proble... 阅读全文
摘要：
The Falling LeavesEach year, fall in the North Central region is accompanied by the brilliant colors of the leaves on the trees, followed quickly by t... 阅读全文