Submission #16589

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
16589	2015-08-29T02:11:30 Z	gs14004	Cactus? Not cactus? (kriii1_C)	C++14	1 / 1	72 ms	11180 KB

C

#include <cstdio>
#include <vector>
using namespace std;

bool ret = true;
bool colp[100005], vis[100005];
int par[100005];
vector<int> graph[100005];

void dfs(int x, int pa){
	vis[x] = 1;
	par[x] = pa;
	for(auto &i : graph[x]){
		if(i == pa) continue;
		if(!vis[i]) continue;
		int pos = x;
		while(1){		
			if(colp[pos]){
				ret = 0;
				break;		
			}
			colp[pos] = 1;
			if(pos == i) break;
			pos = par[pos];
		}
	}
	for(auto &i : graph[x]){
		if(i == pa) continue;
		if(vis[i]) continue;
		dfs(i, x);
	}
}

int main(){
	int n, m;
	scanf("%d %d",&n,&m);
	for(int i=0; i<m; i++){
		int u, v;
		scanf("%d %d",&u,&v);
		graph[u].push_back(v);
		graph[v].push_back(u);
	}
	dfs(1, 0);
	puts(ret ? "Cactus" : "Not cactus");
}

Subtask #1

1.0 / 1.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	4140 KB	Output is correct
2	Correct	0 ms	4140 KB	Output is correct
3	Correct	0 ms	4272 KB	Output is correct
4	Correct	0 ms	4140 KB	Output is correct
5	Correct	5 ms	4140 KB	Output is correct
6	Correct	0 ms	4272 KB	Output is correct
7	Correct	5 ms	4272 KB	Output is correct
8	Correct	0 ms	4272 KB	Output is correct
9	Correct	2 ms	4272 KB	Output is correct
10	Correct	35 ms	7044 KB	Output is correct
11	Correct	28 ms	6892 KB	Output is correct
12	Correct	39 ms	8240 KB	Output is correct
13	Correct	50 ms	7548 KB	Output is correct
14	Correct	41 ms	7348 KB	Output is correct
15	Correct	56 ms	9160 KB	Output is correct
16	Correct	40 ms	7472 KB	Output is correct
17	Correct	38 ms	8308 KB	Output is correct
18	Correct	43 ms	10388 KB	Output is correct
19	Correct	59 ms	11180 KB	Output is correct
20	Correct	32 ms	7788 KB	Output is correct
21	Correct	45 ms	7528 KB	Output is correct
22	Correct	57 ms	9576 KB	Output is correct
23	Correct	0 ms	4140 KB	Output is correct
24	Correct	0 ms	4140 KB	Output is correct
25	Correct	3 ms	4636 KB	Output is correct
26	Correct	41 ms	6912 KB	Output is correct
27	Correct	22 ms	5196 KB	Output is correct
28	Correct	39 ms	6516 KB	Output is correct
29	Correct	72 ms	6516 KB	Output is correct
30	Correct	55 ms	6648 KB	Output is correct
31	Correct	33 ms	6516 KB	Output is correct
32	Correct	46 ms	6912 KB	Output is correct
33	Correct	45 ms	6912 KB	Output is correct
34	Correct	38 ms	6912 KB	Output is correct