1013 Battle Over Cities
Statement
Metadata
- 作者: CHEN, Yue
- 单位: 浙江大学
- 代码长度限制: 16 KB
- 时间限制: 400 ms
- 内存限制: 64 MB
It is vitally important to have all the cities connected by highways in a war. If a city is occupied by the enemy, all the highways from/toward that city are closed. We must know immediately if we need to repair any other highways to keep the rest of the cities connected. Given the map of cities which have all the remaining highways marked, you are supposed to tell the number of highways need to be repaired, quickly.
For example, if we have 3 cities and 2 highways connecting
Input Specification
Each input file contains one test case. Each case starts with a line containing 3 numbers
Output Specification
For each of the
Sample Input
Sample Output