oj.uz

답안 #5126

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
5126 2014-02-10T04:22:05 Z ainta Cactus? Not cactus? (kriii1_C) C++
1 / 1
 68 ms 11464 KB 
#include<stdio.h>
#include<algorithm>
#include<vector>
using namespace std;
int par[100010], num[100100], C;
bool chk[100010], ck;
vector<int>E[100010];
int n;
void DFS(int a, int p){
    par[a] = p;
    num[a] = ++C;
    int i, x;
    for (i = 0; i < E[a].size(); i++){
        if (E[a][i] == p)continue;
        if (par[E[a][i]]){
            if (num[E[a][i]] > num[a])continue;
            x = a;
            while (x != E[a][i]){
                ck |= chk[x];
                chk[x] = true;
                x = par[x];
            }
            ck |= chk[x];
            chk[x] = true;
            if (ck)return;
        }
        else DFS(E[a][i], a);
        if (ck)return;
    }
}
int main(){
    int i, a, b, m;
    scanf("%d%d", &n, &m);
    while (m--){
        scanf("%d%d", &a, &b);
        E[a].push_back(b);
        E[b].push_back(a);
    }
    DFS(1, 1);
    printf(ck ? "Not cactus\n" : "Cactus\n");
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 4428 KB Output is correct
2 Correct 0 ms 4428 KB Output is correct
3 Correct 0 ms 4560 KB Output is correct
4 Correct 0 ms 4428 KB Output is correct
5 Correct 0 ms 4428 KB Output is correct
6 Correct 4 ms 4560 KB Output is correct
7 Correct 4 ms 4560 KB Output is correct
8 Correct 4 ms 4560 KB Output is correct
9 Correct 0 ms 4560 KB Output is correct
10 Correct 40 ms 7332 KB Output is correct
11 Correct 28 ms 7180 KB Output is correct
12 Correct 36 ms 8532 KB Output is correct
13 Correct 44 ms 7832 KB Output is correct
14 Correct 44 ms 7640 KB Output is correct
15 Correct 40 ms 9448 KB Output is correct
16 Correct 36 ms 7760 KB Output is correct
17 Correct 24 ms 8600 KB Output is correct
18 Correct 64 ms 10672 KB Output is correct
19 Correct 68 ms 11464 KB Output is correct
20 Correct 28 ms 8076 KB Output is correct
21 Correct 64 ms 7816 KB Output is correct
22 Correct 48 ms 9868 KB Output is correct
23 Correct 0 ms 4428 KB Output is correct
24 Correct 0 ms 4428 KB Output is correct
25 Correct 4 ms 4924 KB Output is correct
26 Correct 64 ms 7200 KB Output is correct
27 Correct 12 ms 5484 KB Output is correct
28 Correct 36 ms 6804 KB Output is correct
29 Correct 48 ms 6804 KB Output is correct
30 Correct 40 ms 6936 KB Output is correct
31 Correct 44 ms 6804 KB Output is correct
32 Correct 52 ms 7200 KB Output is correct
33 Correct 48 ms 7200 KB Output is correct
34 Correct 48 ms 7200 KB Output is correct