#include <bits/stdc++.h>
using namespace std;
using lint = long long;
using pi = array<lint, 2>;
#define sz(v) ((int)(v).size())
#define all(v) (v).begin(), (v).end()
#define cr(v, n) (v).clear(), (v).resize(n);
const int MAXN = 105;
struct disj {
vector<int> pa;
void init(int n) {
pa.clear();
pa.resize(n);
iota(all(pa), 0);
}
int find(int x) { return pa[x] = (pa[x] == x ? x : find(pa[x])); }
bool uni(int p, int q) {
p = find(p);
q = find(q);
if (p == q)
return 0;
pa[q] = p;
return 1;
}
} disj;
int n;
vector<int> gph[MAXN];
vector<vector<int>> seqs;
void swab(int u, int v) {
vector<int> a(n);
iota(all(a), 0);
a[v] = u;
seqs.push_back(a);
}
void dfs(int x, int p) {
for (auto &y : gph[x]) {
if (y == p)
continue;
swab(x, y);
dfs(y, x);
swab(x, y);
}
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
int m;
cin >> n >> m;
disj.init(n);
for (int i = 0; i < m; i++) {
int u, v;
cin >> u >> v;
if (disj.uni(u, v)) {
gph[u].push_back(v);
gph[v].push_back(u);
}
}
for (int i = 0; i < n - 1; i++) {
for (int j = 0; j < n; j++) {
if (sz(gph[j]) == 1) {
dfs(j, -1);
int k = gph[j][0];
gph[k].erase(find(all(gph[k]), j));
gph[j].clear();
break;
}
}
}
cout << sz(seqs) << "\n";
for (auto &v : seqs) {
for (auto &w : v)
cout << w << " ";
cout << "\n";
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Partially correct |
36 ms |
7340 KB |
Partially correct |
5 |
Partially correct |
42 ms |
7400 KB |
Partially correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Partially correct |
1 ms |
604 KB |
Partially correct |
7 |
Partially correct |
3 ms |
860 KB |
Partially correct |
8 |
Partially correct |
5 ms |
1372 KB |
Partially correct |
9 |
Partially correct |
38 ms |
7372 KB |
Partially correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Partially correct |
5 ms |
1200 KB |
Partially correct |
5 |
Partially correct |
37 ms |
7320 KB |
Partially correct |
6 |
Partially correct |
45 ms |
7568 KB |
Partially correct |
7 |
Partially correct |
10 ms |
2140 KB |
Partially correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Partially correct |
36 ms |
7340 KB |
Partially correct |
5 |
Partially correct |
42 ms |
7400 KB |
Partially correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Partially correct |
5 ms |
1200 KB |
Partially correct |
10 |
Partially correct |
37 ms |
7320 KB |
Partially correct |
11 |
Partially correct |
45 ms |
7568 KB |
Partially correct |
12 |
Partially correct |
10 ms |
2140 KB |
Partially correct |
13 |
Correct |
1 ms |
344 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Partially correct |
37 ms |
7336 KB |
Partially correct |
17 |
Partially correct |
38 ms |
7576 KB |
Partially correct |
18 |
Correct |
0 ms |
344 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Partially correct |
5 ms |
1116 KB |
Partially correct |
21 |
Partially correct |
37 ms |
7372 KB |
Partially correct |
22 |
Partially correct |
46 ms |
7568 KB |
Partially correct |
23 |
Partially correct |
11 ms |
2140 KB |
Partially correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
27 |
Partially correct |
38 ms |
7396 KB |
Partially correct |
28 |
Partially correct |
38 ms |
7564 KB |
Partially correct |
29 |
Partially correct |
38 ms |
7492 KB |
Partially correct |
30 |
Partially correct |
39 ms |
7576 KB |
Partially correct |
31 |
Partially correct |
38 ms |
7568 KB |
Partially correct |
32 |
Partially correct |
38 ms |
7564 KB |
Partially correct |
33 |
Partially correct |
38 ms |
7568 KB |
Partially correct |
34 |
Partially correct |
39 ms |
7388 KB |
Partially correct |
35 |
Partially correct |
38 ms |
7564 KB |
Partially correct |
36 |
Partially correct |
37 ms |
7468 KB |
Partially correct |
37 |
Partially correct |
40 ms |
7564 KB |
Partially correct |
38 |
Partially correct |
38 ms |
7452 KB |
Partially correct |
39 |
Partially correct |
41 ms |
7544 KB |
Partially correct |
40 |
Partially correct |
38 ms |
7560 KB |
Partially correct |
41 |
Partially correct |
38 ms |
7576 KB |
Partially correct |
42 |
Partially correct |
37 ms |
7568 KB |
Partially correct |
43 |
Partially correct |
41 ms |
7560 KB |
Partially correct |
44 |
Partially correct |
41 ms |
7568 KB |
Partially correct |
45 |
Partially correct |
38 ms |
7568 KB |
Partially correct |
46 |
Correct |
1 ms |
344 KB |
Output is correct |
47 |
Correct |
0 ms |
348 KB |
Output is correct |
48 |
Correct |
0 ms |
348 KB |
Output is correct |
49 |
Correct |
0 ms |
348 KB |
Output is correct |
50 |
Correct |
0 ms |
416 KB |
Output is correct |
51 |
Correct |
0 ms |
348 KB |
Output is correct |
52 |
Correct |
0 ms |
348 KB |
Output is correct |
53 |
Correct |
0 ms |
348 KB |
Output is correct |
54 |
Correct |
0 ms |
348 KB |
Output is correct |
55 |
Correct |
0 ms |
348 KB |
Output is correct |
56 |
Correct |
0 ms |
344 KB |
Output is correct |
57 |
Correct |
0 ms |
348 KB |
Output is correct |
58 |
Correct |
0 ms |
348 KB |
Output is correct |
59 |
Correct |
0 ms |
348 KB |
Output is correct |
60 |
Correct |
0 ms |
348 KB |
Output is correct |
61 |
Correct |
0 ms |
348 KB |
Output is correct |
62 |
Correct |
0 ms |
348 KB |
Output is correct |
63 |
Correct |
0 ms |
348 KB |
Output is correct |
64 |
Correct |
0 ms |
348 KB |
Output is correct |
65 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Partially correct |
36 ms |
7340 KB |
Partially correct |
5 |
Partially correct |
42 ms |
7400 KB |
Partially correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Partially correct |
1 ms |
604 KB |
Partially correct |
12 |
Partially correct |
3 ms |
860 KB |
Partially correct |
13 |
Partially correct |
5 ms |
1372 KB |
Partially correct |
14 |
Partially correct |
38 ms |
7372 KB |
Partially correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Partially correct |
5 ms |
1200 KB |
Partially correct |
19 |
Partially correct |
37 ms |
7320 KB |
Partially correct |
20 |
Partially correct |
45 ms |
7568 KB |
Partially correct |
21 |
Partially correct |
10 ms |
2140 KB |
Partially correct |
22 |
Correct |
1 ms |
344 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Partially correct |
37 ms |
7336 KB |
Partially correct |
26 |
Partially correct |
38 ms |
7576 KB |
Partially correct |
27 |
Correct |
0 ms |
344 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Partially correct |
5 ms |
1116 KB |
Partially correct |
30 |
Partially correct |
37 ms |
7372 KB |
Partially correct |
31 |
Partially correct |
46 ms |
7568 KB |
Partially correct |
32 |
Partially correct |
11 ms |
2140 KB |
Partially correct |
33 |
Correct |
0 ms |
348 KB |
Output is correct |
34 |
Correct |
0 ms |
348 KB |
Output is correct |
35 |
Correct |
0 ms |
348 KB |
Output is correct |
36 |
Partially correct |
38 ms |
7396 KB |
Partially correct |
37 |
Partially correct |
38 ms |
7564 KB |
Partially correct |
38 |
Partially correct |
38 ms |
7492 KB |
Partially correct |
39 |
Partially correct |
39 ms |
7576 KB |
Partially correct |
40 |
Partially correct |
38 ms |
7568 KB |
Partially correct |
41 |
Partially correct |
38 ms |
7564 KB |
Partially correct |
42 |
Partially correct |
38 ms |
7568 KB |
Partially correct |
43 |
Partially correct |
39 ms |
7388 KB |
Partially correct |
44 |
Partially correct |
38 ms |
7564 KB |
Partially correct |
45 |
Partially correct |
37 ms |
7468 KB |
Partially correct |
46 |
Partially correct |
40 ms |
7564 KB |
Partially correct |
47 |
Partially correct |
38 ms |
7452 KB |
Partially correct |
48 |
Partially correct |
41 ms |
7544 KB |
Partially correct |
49 |
Partially correct |
38 ms |
7560 KB |
Partially correct |
50 |
Partially correct |
38 ms |
7576 KB |
Partially correct |
51 |
Partially correct |
37 ms |
7568 KB |
Partially correct |
52 |
Partially correct |
41 ms |
7560 KB |
Partially correct |
53 |
Partially correct |
41 ms |
7568 KB |
Partially correct |
54 |
Partially correct |
38 ms |
7568 KB |
Partially correct |
55 |
Correct |
1 ms |
344 KB |
Output is correct |
56 |
Correct |
0 ms |
348 KB |
Output is correct |
57 |
Correct |
0 ms |
348 KB |
Output is correct |
58 |
Correct |
0 ms |
348 KB |
Output is correct |
59 |
Correct |
0 ms |
416 KB |
Output is correct |
60 |
Correct |
0 ms |
348 KB |
Output is correct |
61 |
Correct |
0 ms |
348 KB |
Output is correct |
62 |
Correct |
0 ms |
348 KB |
Output is correct |
63 |
Correct |
0 ms |
348 KB |
Output is correct |
64 |
Correct |
0 ms |
348 KB |
Output is correct |
65 |
Correct |
0 ms |
344 KB |
Output is correct |
66 |
Correct |
0 ms |
348 KB |
Output is correct |
67 |
Correct |
0 ms |
348 KB |
Output is correct |
68 |
Correct |
0 ms |
348 KB |
Output is correct |
69 |
Correct |
0 ms |
348 KB |
Output is correct |
70 |
Correct |
0 ms |
348 KB |
Output is correct |
71 |
Correct |
0 ms |
348 KB |
Output is correct |
72 |
Correct |
0 ms |
348 KB |
Output is correct |
73 |
Correct |
0 ms |
348 KB |
Output is correct |
74 |
Correct |
0 ms |
348 KB |
Output is correct |
75 |
Correct |
0 ms |
344 KB |
Output is correct |
76 |
Correct |
0 ms |
440 KB |
Output is correct |
77 |
Correct |
0 ms |
348 KB |
Output is correct |
78 |
Partially correct |
43 ms |
7192 KB |
Partially correct |
79 |
Partially correct |
38 ms |
7424 KB |
Partially correct |
80 |
Correct |
0 ms |
348 KB |
Output is correct |
81 |
Correct |
0 ms |
348 KB |
Output is correct |
82 |
Correct |
0 ms |
348 KB |
Output is correct |
83 |
Correct |
0 ms |
348 KB |
Output is correct |
84 |
Partially correct |
1 ms |
632 KB |
Partially correct |
85 |
Partially correct |
4 ms |
860 KB |
Partially correct |
86 |
Partially correct |
6 ms |
1112 KB |
Partially correct |
87 |
Partially correct |
38 ms |
7504 KB |
Partially correct |
88 |
Correct |
0 ms |
348 KB |
Output is correct |
89 |
Correct |
0 ms |
348 KB |
Output is correct |
90 |
Partially correct |
5 ms |
1116 KB |
Partially correct |
91 |
Partially correct |
37 ms |
7260 KB |
Partially correct |
92 |
Partially correct |
40 ms |
7564 KB |
Partially correct |
93 |
Partially correct |
10 ms |
2140 KB |
Partially correct |
94 |
Correct |
1 ms |
344 KB |
Output is correct |
95 |
Correct |
0 ms |
344 KB |
Output is correct |
96 |
Correct |
0 ms |
348 KB |
Output is correct |
97 |
Partially correct |
38 ms |
7440 KB |
Partially correct |
98 |
Partially correct |
38 ms |
7564 KB |
Partially correct |
99 |
Partially correct |
70 ms |
7484 KB |
Partially correct |
100 |
Partially correct |
44 ms |
7400 KB |
Partially correct |
101 |
Partially correct |
44 ms |
7428 KB |
Partially correct |
102 |
Partially correct |
38 ms |
7568 KB |
Partially correct |
103 |
Partially correct |
38 ms |
7568 KB |
Partially correct |
104 |
Partially correct |
42 ms |
7512 KB |
Partially correct |
105 |
Partially correct |
51 ms |
7568 KB |
Partially correct |
106 |
Partially correct |
44 ms |
7564 KB |
Partially correct |
107 |
Partially correct |
73 ms |
7424 KB |
Partially correct |
108 |
Partially correct |
38 ms |
7564 KB |
Partially correct |
109 |
Partially correct |
44 ms |
7568 KB |
Partially correct |
110 |
Partially correct |
38 ms |
7568 KB |
Partially correct |
111 |
Partially correct |
38 ms |
7568 KB |
Partially correct |
112 |
Partially correct |
38 ms |
7564 KB |
Partially correct |
113 |
Partially correct |
49 ms |
7376 KB |
Partially correct |
114 |
Partially correct |
38 ms |
7568 KB |
Partially correct |
115 |
Partially correct |
39 ms |
7576 KB |
Partially correct |
116 |
Correct |
1 ms |
344 KB |
Output is correct |
117 |
Correct |
0 ms |
348 KB |
Output is correct |
118 |
Correct |
1 ms |
348 KB |
Output is correct |
119 |
Correct |
0 ms |
348 KB |
Output is correct |
120 |
Correct |
0 ms |
348 KB |
Output is correct |
121 |
Correct |
0 ms |
348 KB |
Output is correct |
122 |
Correct |
0 ms |
348 KB |
Output is correct |
123 |
Correct |
0 ms |
348 KB |
Output is correct |
124 |
Correct |
0 ms |
348 KB |
Output is correct |
125 |
Correct |
0 ms |
348 KB |
Output is correct |
126 |
Correct |
0 ms |
348 KB |
Output is correct |
127 |
Correct |
0 ms |
360 KB |
Output is correct |
128 |
Correct |
0 ms |
348 KB |
Output is correct |
129 |
Correct |
0 ms |
348 KB |
Output is correct |
130 |
Correct |
0 ms |
348 KB |
Output is correct |
131 |
Correct |
0 ms |
348 KB |
Output is correct |
132 |
Correct |
0 ms |
348 KB |
Output is correct |
133 |
Correct |
0 ms |
348 KB |
Output is correct |
134 |
Correct |
1 ms |
348 KB |
Output is correct |
135 |
Correct |
0 ms |
348 KB |
Output is correct |
136 |
Correct |
1 ms |
344 KB |
Output is correct |
137 |
Correct |
0 ms |
348 KB |
Output is correct |
138 |
Correct |
0 ms |
344 KB |
Output is correct |
139 |
Correct |
0 ms |
348 KB |
Output is correct |
140 |
Partially correct |
38 ms |
7408 KB |
Partially correct |
141 |
Correct |
1 ms |
344 KB |
Output is correct |
142 |
Partially correct |
39 ms |
7572 KB |
Partially correct |
143 |
Partially correct |
49 ms |
7564 KB |
Partially correct |
144 |
Partially correct |
39 ms |
7568 KB |
Partially correct |
145 |
Partially correct |
42 ms |
7568 KB |
Partially correct |
146 |
Partially correct |
38 ms |
7568 KB |
Partially correct |
147 |
Partially correct |
38 ms |
7564 KB |
Partially correct |
148 |
Partially correct |
41 ms |
7476 KB |
Partially correct |
149 |
Partially correct |
40 ms |
7564 KB |
Partially correct |
150 |
Partially correct |
38 ms |
7564 KB |
Partially correct |
151 |
Partially correct |
38 ms |
7564 KB |
Partially correct |
152 |
Partially correct |
38 ms |
7572 KB |
Partially correct |
153 |
Partially correct |
38 ms |
7564 KB |
Partially correct |
154 |
Partially correct |
38 ms |
7564 KB |
Partially correct |
155 |
Partially correct |
38 ms |
7572 KB |
Partially correct |
156 |
Partially correct |
44 ms |
7564 KB |
Partially correct |
157 |
Partially correct |
40 ms |
7564 KB |
Partially correct |
158 |
Partially correct |
47 ms |
7568 KB |
Partially correct |
159 |
Partially correct |
39 ms |
7412 KB |
Partially correct |
160 |
Partially correct |
39 ms |
7564 KB |
Partially correct |
161 |
Partially correct |
40 ms |
7572 KB |
Partially correct |
162 |
Correct |
1 ms |
344 KB |
Output is correct |
163 |
Correct |
0 ms |
348 KB |
Output is correct |
164 |
Correct |
0 ms |
348 KB |
Output is correct |
165 |
Correct |
0 ms |
348 KB |
Output is correct |