#include <bits/stdc++.h>
using namespace std;
template<typename T>
using V = vector<T>;
using vi = V<int>;
using vb = V<bool>;
using pi = pair<int,int>;
#define F0R(i,n) for (int i = 0; i < n;i++)
#define FOR(i, j, n) for(int i = j; i < n;i++)
#define ckmin(x,y) x = min(x,y)
#define f first
#define s second
using ll = long long;
constexpr int MOD = 998244353;
V<int> vis;
V<V<int>> g;
bool dfs(int x) {
if (vis[x] == 1) return false;
vis[x] = 1;
for (auto y : g[x]) {
if (vis[y] == 2) continue;
if (!dfs(y)) return false;
}
vis[x] = 2;
return true;
}
int main() {
ios_base::sync_with_stdio(false); cin.tie(nullptr);
int n, m; cin >> n >> m;
V<pi> edges(m);
set<pi> exists;
F0R(i, m) {
int x, y; cin >> x >> y;
x--;
y--;
edges[i] = {x,y};
exists.insert({x,y});
exists.insert({y,x});
}
ll ans = 0;
vi perm(n); // Height of I
F0R(i, n)
perm[i] = i;
do {
int cost = 0;
for (auto [a,b] : edges) {
if (perm[a] > perm[b]) cost++;
}
bool pos = true;
V<pi> check;
F0R(i, n) {
check.emplace_back(perm[i],i);
}
std::sort(check.begin(), check.end());
F0R(i, n - 1) {
int a = check[i].s;
for (int j = i + 1; j < n; ++j) {
int b = check[j].s;
if (exists.count({a,b})) break;
if (a > b) pos = false;
}
}
if (pos)
ans += cost;
ans %= MOD;
} while (std::next_permutation(perm.begin(), perm.end()));
cout << ans;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
524 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
508 KB |
Output is correct |
6 |
Correct |
1 ms |
380 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
524 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
508 KB |
Output is correct |
6 |
Correct |
1 ms |
380 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
9 |
Correct |
1 ms |
336 KB |
Output is correct |
10 |
Correct |
1 ms |
504 KB |
Output is correct |
11 |
Correct |
1 ms |
336 KB |
Output is correct |
12 |
Correct |
1 ms |
508 KB |
Output is correct |
13 |
Correct |
1 ms |
336 KB |
Output is correct |
14 |
Correct |
1 ms |
336 KB |
Output is correct |
15 |
Correct |
1 ms |
336 KB |
Output is correct |
16 |
Correct |
1 ms |
336 KB |
Output is correct |
17 |
Correct |
1 ms |
336 KB |
Output is correct |
18 |
Correct |
1 ms |
336 KB |
Output is correct |
19 |
Correct |
1 ms |
336 KB |
Output is correct |
20 |
Correct |
1 ms |
460 KB |
Output is correct |
21 |
Correct |
1 ms |
336 KB |
Output is correct |
22 |
Correct |
1 ms |
336 KB |
Output is correct |
23 |
Correct |
1 ms |
456 KB |
Output is correct |
24 |
Correct |
1 ms |
336 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
524 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
508 KB |
Output is correct |
6 |
Correct |
1 ms |
380 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
9 |
Correct |
1 ms |
336 KB |
Output is correct |
10 |
Correct |
1 ms |
504 KB |
Output is correct |
11 |
Correct |
1 ms |
336 KB |
Output is correct |
12 |
Correct |
1 ms |
508 KB |
Output is correct |
13 |
Correct |
1 ms |
336 KB |
Output is correct |
14 |
Correct |
1 ms |
336 KB |
Output is correct |
15 |
Correct |
1 ms |
336 KB |
Output is correct |
16 |
Correct |
1 ms |
336 KB |
Output is correct |
17 |
Correct |
1 ms |
336 KB |
Output is correct |
18 |
Correct |
1 ms |
336 KB |
Output is correct |
19 |
Correct |
1 ms |
336 KB |
Output is correct |
20 |
Correct |
1 ms |
460 KB |
Output is correct |
21 |
Correct |
1 ms |
336 KB |
Output is correct |
22 |
Correct |
1 ms |
336 KB |
Output is correct |
23 |
Correct |
1 ms |
456 KB |
Output is correct |
24 |
Correct |
1 ms |
336 KB |
Output is correct |
25 |
Correct |
2 ms |
336 KB |
Output is correct |
26 |
Correct |
2 ms |
336 KB |
Output is correct |
27 |
Correct |
2 ms |
336 KB |
Output is correct |
28 |
Correct |
2 ms |
336 KB |
Output is correct |
29 |
Correct |
2 ms |
336 KB |
Output is correct |
30 |
Correct |
2 ms |
336 KB |
Output is correct |
31 |
Correct |
2 ms |
336 KB |
Output is correct |
32 |
Correct |
14 ms |
336 KB |
Output is correct |
33 |
Correct |
14 ms |
504 KB |
Output is correct |
34 |
Correct |
13 ms |
336 KB |
Output is correct |
35 |
Correct |
14 ms |
456 KB |
Output is correct |
36 |
Correct |
14 ms |
464 KB |
Output is correct |
37 |
Correct |
13 ms |
336 KB |
Output is correct |
38 |
Correct |
14 ms |
336 KB |
Output is correct |
39 |
Correct |
126 ms |
336 KB |
Output is correct |
40 |
Correct |
144 ms |
588 KB |
Output is correct |
41 |
Correct |
136 ms |
336 KB |
Output is correct |
42 |
Correct |
143 ms |
336 KB |
Output is correct |
43 |
Correct |
130 ms |
336 KB |
Output is correct |
44 |
Correct |
139 ms |
336 KB |
Output is correct |
45 |
Correct |
130 ms |
336 KB |
Output is correct |
46 |
Correct |
131 ms |
336 KB |
Output is correct |
47 |
Correct |
130 ms |
336 KB |
Output is correct |
48 |
Correct |
131 ms |
336 KB |
Output is correct |
49 |
Correct |
129 ms |
336 KB |
Output is correct |
50 |
Correct |
132 ms |
336 KB |
Output is correct |
51 |
Correct |
136 ms |
336 KB |
Output is correct |
52 |
Correct |
1389 ms |
444 KB |
Output is correct |
53 |
Correct |
1529 ms |
440 KB |
Output is correct |
54 |
Correct |
1544 ms |
448 KB |
Output is correct |
55 |
Correct |
1462 ms |
448 KB |
Output is correct |
56 |
Correct |
1436 ms |
336 KB |
Output is correct |
57 |
Correct |
1415 ms |
452 KB |
Output is correct |
58 |
Correct |
1439 ms |
336 KB |
Output is correct |
59 |
Correct |
1411 ms |
452 KB |
Output is correct |
60 |
Correct |
1428 ms |
448 KB |
Output is correct |
61 |
Correct |
1479 ms |
440 KB |
Output is correct |
62 |
Correct |
1437 ms |
444 KB |
Output is correct |
63 |
Correct |
1536 ms |
448 KB |
Output is correct |
64 |
Correct |
1571 ms |
452 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
524 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
508 KB |
Output is correct |
6 |
Correct |
1 ms |
380 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
9 |
Correct |
1 ms |
336 KB |
Output is correct |
10 |
Correct |
1 ms |
504 KB |
Output is correct |
11 |
Correct |
1 ms |
336 KB |
Output is correct |
12 |
Correct |
1 ms |
508 KB |
Output is correct |
13 |
Correct |
1 ms |
336 KB |
Output is correct |
14 |
Correct |
1 ms |
336 KB |
Output is correct |
15 |
Correct |
1 ms |
336 KB |
Output is correct |
16 |
Correct |
1 ms |
336 KB |
Output is correct |
17 |
Correct |
1 ms |
336 KB |
Output is correct |
18 |
Correct |
1 ms |
336 KB |
Output is correct |
19 |
Correct |
1 ms |
336 KB |
Output is correct |
20 |
Correct |
1 ms |
460 KB |
Output is correct |
21 |
Correct |
1 ms |
336 KB |
Output is correct |
22 |
Correct |
1 ms |
336 KB |
Output is correct |
23 |
Correct |
1 ms |
456 KB |
Output is correct |
24 |
Correct |
1 ms |
336 KB |
Output is correct |
25 |
Correct |
2 ms |
336 KB |
Output is correct |
26 |
Correct |
2 ms |
336 KB |
Output is correct |
27 |
Correct |
2 ms |
336 KB |
Output is correct |
28 |
Correct |
2 ms |
336 KB |
Output is correct |
29 |
Correct |
2 ms |
336 KB |
Output is correct |
30 |
Correct |
2 ms |
336 KB |
Output is correct |
31 |
Correct |
2 ms |
336 KB |
Output is correct |
32 |
Correct |
14 ms |
336 KB |
Output is correct |
33 |
Correct |
14 ms |
504 KB |
Output is correct |
34 |
Correct |
13 ms |
336 KB |
Output is correct |
35 |
Correct |
14 ms |
456 KB |
Output is correct |
36 |
Correct |
14 ms |
464 KB |
Output is correct |
37 |
Correct |
13 ms |
336 KB |
Output is correct |
38 |
Correct |
14 ms |
336 KB |
Output is correct |
39 |
Correct |
126 ms |
336 KB |
Output is correct |
40 |
Correct |
144 ms |
588 KB |
Output is correct |
41 |
Correct |
136 ms |
336 KB |
Output is correct |
42 |
Correct |
143 ms |
336 KB |
Output is correct |
43 |
Correct |
130 ms |
336 KB |
Output is correct |
44 |
Correct |
139 ms |
336 KB |
Output is correct |
45 |
Correct |
130 ms |
336 KB |
Output is correct |
46 |
Correct |
131 ms |
336 KB |
Output is correct |
47 |
Correct |
130 ms |
336 KB |
Output is correct |
48 |
Correct |
131 ms |
336 KB |
Output is correct |
49 |
Correct |
129 ms |
336 KB |
Output is correct |
50 |
Correct |
132 ms |
336 KB |
Output is correct |
51 |
Correct |
136 ms |
336 KB |
Output is correct |
52 |
Correct |
1389 ms |
444 KB |
Output is correct |
53 |
Correct |
1529 ms |
440 KB |
Output is correct |
54 |
Correct |
1544 ms |
448 KB |
Output is correct |
55 |
Correct |
1462 ms |
448 KB |
Output is correct |
56 |
Correct |
1436 ms |
336 KB |
Output is correct |
57 |
Correct |
1415 ms |
452 KB |
Output is correct |
58 |
Correct |
1439 ms |
336 KB |
Output is correct |
59 |
Correct |
1411 ms |
452 KB |
Output is correct |
60 |
Correct |
1428 ms |
448 KB |
Output is correct |
61 |
Correct |
1479 ms |
440 KB |
Output is correct |
62 |
Correct |
1437 ms |
444 KB |
Output is correct |
63 |
Correct |
1536 ms |
448 KB |
Output is correct |
64 |
Correct |
1571 ms |
452 KB |
Output is correct |
65 |
Execution timed out |
3059 ms |
336 KB |
Time limit exceeded |
66 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
524 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
508 KB |
Output is correct |
6 |
Correct |
1 ms |
380 KB |
Output is correct |
7 |
Correct |
1 ms |
336 KB |
Output is correct |
8 |
Correct |
1 ms |
336 KB |
Output is correct |
9 |
Correct |
1 ms |
336 KB |
Output is correct |
10 |
Correct |
1 ms |
504 KB |
Output is correct |
11 |
Correct |
1 ms |
336 KB |
Output is correct |
12 |
Correct |
1 ms |
508 KB |
Output is correct |
13 |
Correct |
1 ms |
336 KB |
Output is correct |
14 |
Correct |
1 ms |
336 KB |
Output is correct |
15 |
Correct |
1 ms |
336 KB |
Output is correct |
16 |
Correct |
1 ms |
336 KB |
Output is correct |
17 |
Correct |
1 ms |
336 KB |
Output is correct |
18 |
Correct |
1 ms |
336 KB |
Output is correct |
19 |
Correct |
1 ms |
336 KB |
Output is correct |
20 |
Correct |
1 ms |
460 KB |
Output is correct |
21 |
Correct |
1 ms |
336 KB |
Output is correct |
22 |
Correct |
1 ms |
336 KB |
Output is correct |
23 |
Correct |
1 ms |
456 KB |
Output is correct |
24 |
Correct |
1 ms |
336 KB |
Output is correct |
25 |
Correct |
2 ms |
336 KB |
Output is correct |
26 |
Correct |
2 ms |
336 KB |
Output is correct |
27 |
Correct |
2 ms |
336 KB |
Output is correct |
28 |
Correct |
2 ms |
336 KB |
Output is correct |
29 |
Correct |
2 ms |
336 KB |
Output is correct |
30 |
Correct |
2 ms |
336 KB |
Output is correct |
31 |
Correct |
2 ms |
336 KB |
Output is correct |
32 |
Correct |
14 ms |
336 KB |
Output is correct |
33 |
Correct |
14 ms |
504 KB |
Output is correct |
34 |
Correct |
13 ms |
336 KB |
Output is correct |
35 |
Correct |
14 ms |
456 KB |
Output is correct |
36 |
Correct |
14 ms |
464 KB |
Output is correct |
37 |
Correct |
13 ms |
336 KB |
Output is correct |
38 |
Correct |
14 ms |
336 KB |
Output is correct |
39 |
Correct |
126 ms |
336 KB |
Output is correct |
40 |
Correct |
144 ms |
588 KB |
Output is correct |
41 |
Correct |
136 ms |
336 KB |
Output is correct |
42 |
Correct |
143 ms |
336 KB |
Output is correct |
43 |
Correct |
130 ms |
336 KB |
Output is correct |
44 |
Correct |
139 ms |
336 KB |
Output is correct |
45 |
Correct |
130 ms |
336 KB |
Output is correct |
46 |
Correct |
131 ms |
336 KB |
Output is correct |
47 |
Correct |
130 ms |
336 KB |
Output is correct |
48 |
Correct |
131 ms |
336 KB |
Output is correct |
49 |
Correct |
129 ms |
336 KB |
Output is correct |
50 |
Correct |
132 ms |
336 KB |
Output is correct |
51 |
Correct |
136 ms |
336 KB |
Output is correct |
52 |
Correct |
1389 ms |
444 KB |
Output is correct |
53 |
Correct |
1529 ms |
440 KB |
Output is correct |
54 |
Correct |
1544 ms |
448 KB |
Output is correct |
55 |
Correct |
1462 ms |
448 KB |
Output is correct |
56 |
Correct |
1436 ms |
336 KB |
Output is correct |
57 |
Correct |
1415 ms |
452 KB |
Output is correct |
58 |
Correct |
1439 ms |
336 KB |
Output is correct |
59 |
Correct |
1411 ms |
452 KB |
Output is correct |
60 |
Correct |
1428 ms |
448 KB |
Output is correct |
61 |
Correct |
1479 ms |
440 KB |
Output is correct |
62 |
Correct |
1437 ms |
444 KB |
Output is correct |
63 |
Correct |
1536 ms |
448 KB |
Output is correct |
64 |
Correct |
1571 ms |
452 KB |
Output is correct |
65 |
Execution timed out |
3059 ms |
336 KB |
Time limit exceeded |
66 |
Halted |
0 ms |
0 KB |
- |