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EIUDFS1 - DFS Directed Graph |
Given a directed graph, print the order of visiting vertex using Deep-First Search algorithm from vertex 0 and smallest vertex is prioritized than other vertices.
Input
The first line consists of two positive integers, the number n vertices (0<n<105) and the number of edges m (0<m<2x105).
Then there are m lines, each containing two integers u and v representing an edge from u to v.(u,v<105).
Output
Print the list of vertex separated by spaces.
Example
Input: 4 4 0 3 3 2 1 0 0 1
Output: 0 1 3 2
| Added by: | Ha Minh Ngoc |
| Date: | 2015-12-30 |
| Time limit: | 1s |
| Source limit: | 50000B |
| Memory limit: | 1536MB |
| Cluster: | Cube (Intel G860) |
| Languages: | All except: ASM64 GOSU JS-MONKEY |