hange_db的专栏

The Suspects Time Limit: 1000MS   Memory Limit: 20000K Total Submissions: 18435   Accepted: 8920 Description Severe acute respiratory syndrome (SARS), an atypical pneumon

X-Plosives   A secret service developed a new kind of explosive that attain its volatile property only when a specific association of products occurs. Each product is a mix of two different simple c

3027 - Corporative Network Time limit: 3.000 seconds #include #include #include using namespace std; const int maxn=20050; int pre[maxn]; int d[maxn]; int find(int x){ if(pre[x]!=x){

Ubiquitous Religions Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 20197   Accepted: 9920 Description There are so many different religions in the world to

食物链 Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 36114   Accepted: 10488 Description 动物王国中有三类动物A,B,C，这三类动物的食物链构成了有趣的环形。A吃B， B吃C，C吃A。  现有N个动物，以1－N编号。每个动物都

Rochambeau Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 1658   Accepted: 577 Description N children are playing Rochambeau (scissors-rock-cloth) game wi

并查集

Supermarket Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 7838   Accepted: 3334 Description A supermarket has a set Prod of products on sale. It earns a pr