Submission #16429

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
16429	2015-08-24 17:04:40	rhdmstjr	Cactus? Not cactus? (kriii1_C)	C++98	0 / 1	0 ms	1576 KiB

C

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#include <cstdio>
#include <vector>
using namespace std;
int N,M;
int visited_cnt;
void cnt_cycle(vector<vector<int> > &graph, int &cnt, vector<int> &visited, int pre, int now){
//  printf("cycle now == %d, pre == %d, visited_cnt = %d\n", now, pre, visited_cnt);
  if(visited_cnt > M) return ;
  visited_cnt++; // count edge
  if(visited[now] != 0){
//    printf("now == %d\n", now);
    cnt++;
    return;
  }
  visited[now] = 1;
  for(int i=0;i<graph[now].size();i++){
    int to = graph[now][i];
    if( pre != to)
      cnt_cycle(graph, cnt, visited, now, to);
  }
}
int main(){
  scanf("%d%d",&N,&M);
  vector<vector<int> > graph(N + 1);
  for(int i=0;i<M;i++){
 
 
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• Subtask 1: 0 / 1