#define wiwihorz
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma loop-opt(on)
#define rep(i, a, b) for(int i = a; i <= b; i++)
#define rrep(i, a, b) for(int i = b; i >= a; i--)
#define all(x) x.begin(), x.end()
#define ceil(a, b) ((a + b - 1) / (b))
#define INF 1000000000000000000
#define MOD 998244353
#define eps (1e-9)
using namespace std;
#define int long long int
#define lld long double
#define pii pair<int, int>
#define random mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count())
#ifdef wiwihorz
#define print(a...) kout("[" + string(#a) + "] = ", a)
void vprint(auto L, auto R) {while(L < R) cerr << *L << " \n"[next(L) == R], ++L;}
void kout() { cerr << endl; }
template<class T1, class ... T2> void kout(T1 a, T2 ... e) { cerr << a << " ", kout(e...); }
#else
#define print(...) 0
#define vprint(...) 0
#endif
namespace solver {
int n, m, cur;
vector<vector<int>> mp;
vector<int> x, y, es, vis;
void init_(int _n, int _m) {
n = _n, m = _m;
mp.assign(n + 1, vector<int>());
x.clear();
y.clear();
es.clear();
}
void add_edge(int a, int b) {
mp[a].push_back(es.size());
mp[b].push_back(es.size());
x.push_back(a);
y.push_back(b);
es.push_back(a ^ b);
}
pii get(int id) {
bool yes = (cur >> id) & 1;
if(yes) return {y[id], x[id]};
else return {x[id], y[id]};
}
int solve() {
int ans = 0, ok = 0;
rep(i, 0, (1 << m) - 1) {
cur = i, ok = 0;
vis.assign(n + 1, 0);
rep(j, 0, m - 1) {
pii es = get(j);
vis[es.second] ++;
}
queue<int> q;
rep(j, 1, n) if(!vis[j]) q.push(j);
while(q.size()) {
int p = q.front(); q.pop();
ok ++;
for(auto i : mp[p]) {
int to = es[i] ^ p;
if(get(i) == pii(p, to)) {
vis[to] --;
if(!vis[to]) q.push(to);
}
}
}
if(ok == n) ans = (ans + __builtin_popcount(i)) % MOD;
}
return ans;
}
};
using namespace solver;
signed main() {
ios::sync_with_stdio(false), cin.tie(0);
int n, m; cin >> n >> m;
init_(n, m);
rep(i, 1, m) {
int a, b; cin >> a >> b;
add_edge(a, b);
}
cout << solve() << "\n";
return 0;
}
Compilation message
amusementpark.cpp:4: warning: ignoring '#pragma loop ' [-Wunknown-pragmas]
4 | #pragma loop-opt(on)
|
amusementpark.cpp:24:13: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
24 | void vprint(auto L, auto R) {while(L < R) cerr << *L << " \n"[next(L) == R], ++L;}
| ^~~~
amusementpark.cpp:24:21: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
24 | void vprint(auto L, auto R) {while(L < R) cerr << *L << " \n"[next(L) == R], ++L;}
| ^~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
316 KB |
Output is correct |
7 |
Correct |
1 ms |
312 KB |
Output is correct |
8 |
Correct |
1 ms |
204 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
316 KB |
Output is correct |
7 |
Correct |
1 ms |
312 KB |
Output is correct |
8 |
Correct |
1 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
1 ms |
316 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
312 KB |
Output is correct |
14 |
Correct |
1 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
204 KB |
Output is correct |
16 |
Correct |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
1 ms |
244 KB |
Output is correct |
18 |
Correct |
1 ms |
256 KB |
Output is correct |
19 |
Correct |
1 ms |
204 KB |
Output is correct |
20 |
Correct |
1 ms |
204 KB |
Output is correct |
21 |
Correct |
1 ms |
316 KB |
Output is correct |
22 |
Correct |
1 ms |
204 KB |
Output is correct |
23 |
Correct |
2 ms |
256 KB |
Output is correct |
24 |
Correct |
8 ms |
204 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
316 KB |
Output is correct |
7 |
Correct |
1 ms |
312 KB |
Output is correct |
8 |
Correct |
1 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
1 ms |
316 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
312 KB |
Output is correct |
14 |
Correct |
1 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
204 KB |
Output is correct |
16 |
Correct |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
1 ms |
244 KB |
Output is correct |
18 |
Correct |
1 ms |
256 KB |
Output is correct |
19 |
Correct |
1 ms |
204 KB |
Output is correct |
20 |
Correct |
1 ms |
204 KB |
Output is correct |
21 |
Correct |
1 ms |
316 KB |
Output is correct |
22 |
Correct |
1 ms |
204 KB |
Output is correct |
23 |
Correct |
2 ms |
256 KB |
Output is correct |
24 |
Correct |
8 ms |
204 KB |
Output is correct |
25 |
Correct |
1 ms |
204 KB |
Output is correct |
26 |
Correct |
1 ms |
304 KB |
Output is correct |
27 |
Correct |
1 ms |
204 KB |
Output is correct |
28 |
Correct |
2 ms |
308 KB |
Output is correct |
29 |
Correct |
7 ms |
204 KB |
Output is correct |
30 |
Correct |
55 ms |
308 KB |
Output is correct |
31 |
Correct |
460 ms |
288 KB |
Output is correct |
32 |
Correct |
1 ms |
204 KB |
Output is correct |
33 |
Correct |
0 ms |
204 KB |
Output is correct |
34 |
Correct |
2 ms |
204 KB |
Output is correct |
35 |
Correct |
16 ms |
312 KB |
Output is correct |
36 |
Correct |
233 ms |
292 KB |
Output is correct |
37 |
Execution timed out |
3039 ms |
224 KB |
Time limit exceeded |
38 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
316 KB |
Output is correct |
7 |
Correct |
1 ms |
312 KB |
Output is correct |
8 |
Correct |
1 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
1 ms |
316 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
312 KB |
Output is correct |
14 |
Correct |
1 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
204 KB |
Output is correct |
16 |
Correct |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
1 ms |
244 KB |
Output is correct |
18 |
Correct |
1 ms |
256 KB |
Output is correct |
19 |
Correct |
1 ms |
204 KB |
Output is correct |
20 |
Correct |
1 ms |
204 KB |
Output is correct |
21 |
Correct |
1 ms |
316 KB |
Output is correct |
22 |
Correct |
1 ms |
204 KB |
Output is correct |
23 |
Correct |
2 ms |
256 KB |
Output is correct |
24 |
Correct |
8 ms |
204 KB |
Output is correct |
25 |
Correct |
1 ms |
204 KB |
Output is correct |
26 |
Correct |
1 ms |
304 KB |
Output is correct |
27 |
Correct |
1 ms |
204 KB |
Output is correct |
28 |
Correct |
2 ms |
308 KB |
Output is correct |
29 |
Correct |
7 ms |
204 KB |
Output is correct |
30 |
Correct |
55 ms |
308 KB |
Output is correct |
31 |
Correct |
460 ms |
288 KB |
Output is correct |
32 |
Correct |
1 ms |
204 KB |
Output is correct |
33 |
Correct |
0 ms |
204 KB |
Output is correct |
34 |
Correct |
2 ms |
204 KB |
Output is correct |
35 |
Correct |
16 ms |
312 KB |
Output is correct |
36 |
Correct |
233 ms |
292 KB |
Output is correct |
37 |
Execution timed out |
3039 ms |
224 KB |
Time limit exceeded |
38 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
316 KB |
Output is correct |
7 |
Correct |
1 ms |
312 KB |
Output is correct |
8 |
Correct |
1 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
1 ms |
316 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
312 KB |
Output is correct |
14 |
Correct |
1 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
204 KB |
Output is correct |
16 |
Correct |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
1 ms |
244 KB |
Output is correct |
18 |
Correct |
1 ms |
256 KB |
Output is correct |
19 |
Correct |
1 ms |
204 KB |
Output is correct |
20 |
Correct |
1 ms |
204 KB |
Output is correct |
21 |
Correct |
1 ms |
316 KB |
Output is correct |
22 |
Correct |
1 ms |
204 KB |
Output is correct |
23 |
Correct |
2 ms |
256 KB |
Output is correct |
24 |
Correct |
8 ms |
204 KB |
Output is correct |
25 |
Correct |
1 ms |
204 KB |
Output is correct |
26 |
Correct |
1 ms |
304 KB |
Output is correct |
27 |
Correct |
1 ms |
204 KB |
Output is correct |
28 |
Correct |
2 ms |
308 KB |
Output is correct |
29 |
Correct |
7 ms |
204 KB |
Output is correct |
30 |
Correct |
55 ms |
308 KB |
Output is correct |
31 |
Correct |
460 ms |
288 KB |
Output is correct |
32 |
Correct |
1 ms |
204 KB |
Output is correct |
33 |
Correct |
0 ms |
204 KB |
Output is correct |
34 |
Correct |
2 ms |
204 KB |
Output is correct |
35 |
Correct |
16 ms |
312 KB |
Output is correct |
36 |
Correct |
233 ms |
292 KB |
Output is correct |
37 |
Execution timed out |
3039 ms |
224 KB |
Time limit exceeded |
38 |
Halted |
0 ms |
0 KB |
- |