Each soda has some candies in their hand. And they want to make the number of candies the same by doing some taking and giving operations. More specifically, every two adjacent soda x and y can do one of the following operations only once: 1. x-th so…

Virtual Participation Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 237    Accepted Submission(s): 56 Special Judge Problem Description As we know, Rikka is poor at math. Yuta is worrying abo…

Connect the Graph Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 108    Accepted Submission(s): 36 Special Judge Problem Description Once there was a special graph. This graph had n vertices a…

Tricks Device Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 1977    Accepted Submission(s): 509 Problem Description Innocent Wu follows Dumb Zhang into a ancient tomb. Innocent Wu’s at the en…

Crazy Bobo Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 131072/65536 K (Java/Others) Total Submission(s): 1215    Accepted Submission(s): 366 Problem Description Bobo has a tree,whose vertices are conveniently labeled by 1,2,...,n.Each nod…

Fantasy magicians usually gain their ability through one of three usual methods: possessing it as an innate talent, gaining it through study and practice, or receiving it from another being, often a god, spirit, or demon of some sort. Some wizards ar…

Solve this interesting problem Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 422    Accepted Submission(s): 98 Problem Description Have you learned something about segment tree? If not, don’t…

Painter Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 895    Accepted Submission(s): 408 Problem Description Mr. Hdu is an painter, as we all know, painters need ideas to innovate , one day,…

Your current task is to make a ground plan for a residential building located in HZXJHS. So you must determine a way to split the floor building with walls to make apartments in the shape of a rectangle. Each built wall must be paralled to the buildi…

Delicious Apples Time Limit: 5000/3000 MS (Java/Others)    Memory Limit: 524288/524288 K (Java/Others) Total Submission(s): 1371    Accepted Submission(s): 448 Problem Description There are n apple trees planted along a cyclic road, which is L metres…