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Submission #856962

# Submission time Handle Problem Language Result Execution time Memory
856962 2023-10-05T02:16:47 Z wakandaaa Marshmallow Molecules (CCO19_day2problem2) C++17
25 / 25
 81 ms 53752 KB 
#include <bits/stdc++.h>

using namespace std;

#define file ""

#define mp make_pair
#define fi first
#define se second
#define all(x) x.begin(), x.end()

#define getbit(x, i) (((x) >> (i)) & 1)
#define bit(x) (1LL << (x))
#define popcount __builtin_popcountll

mt19937_64 rd(chrono::steady_clock::now().time_since_epoch().count());
int rand(int l, int r) {
    return l + rd() % (r - l + 1);
}

const int N = 1e6 + 5;
const int mod = (int)1e9 + 7; // 998244353;
const int lg = 25; // lg + 1
const int oo = 1e9;
const long long ooo = 1e18;

template<class X, class Y> bool mini(X &a, Y b) {
    return a > b ? (a = b, true) : false;
}
template<class X, class Y> bool maxi(X &a, Y b) {
    return a < b ? (a = b, true) : false;
}
void add(int &a, int b) {
    a += b;
    if (a >= mod) a -= mod;
    if (a < 0) a += mod;
}

int n, m;
set<int> adj[N];

void unite(int u, int v) {
    if (adj[u].size() > adj[v].size()) swap(adj[u], adj[v]);
    for (int i : adj[u]) adj[v].insert(i);
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);

    // freopen(file".inp", "r", stdin);
    // freopen(file".out", "w", stdout);

    cin >> n >> m;
    for (int i = 1; i <= m; ++i) {
        int u, v;
        cin >> u >> v;
        if (u > v) swap(u, v);
        adj[u].insert(v);
    }

    long long ans = 0;

    for (int u = 1; u <= n; ++u) if (adj[u].size()) {        
        ans += adj[u].size();

        int v = *adj[u].begin();
        adj[u].erase(adj[u].begin());
        if (adj[u].size() > adj[v].size()) swap(adj[u], adj[v]);
        for (int x : adj[u]) adj[v].insert(x);

        adj[u].clear();
    }

    cout << ans << '\n';

    return 0;
}

/*

*/

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 47524 KB Output is correct
2 Correct 9 ms 47196 KB Output is correct
3 Correct 11 ms 47452 KB Output is correct
4 Correct 10 ms 47448 KB Output is correct
5 Correct 10 ms 47452 KB Output is correct
6 Correct 10 ms 47452 KB Output is correct
7 Correct 10 ms 47452 KB Output is correct
8 Correct 10 ms 47452 KB Output is correct
9 Correct 9 ms 47384 KB Output is correct
10 Correct 10 ms 47452 KB Output is correct
11 Correct 10 ms 47532 KB Output is correct
12 Correct 10 ms 47452 KB Output is correct
13 Correct 11 ms 47588 KB Output is correct
14 Correct 10 ms 47452 KB Output is correct
15 Correct 9 ms 47196 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 47524 KB Output is correct
2 Correct 9 ms 47196 KB Output is correct
3 Correct 11 ms 47452 KB Output is correct
4 Correct 10 ms 47448 KB Output is correct
5 Correct 10 ms 47452 KB Output is correct
6 Correct 10 ms 47452 KB Output is correct
7 Correct 10 ms 47452 KB Output is correct
8 Correct 10 ms 47452 KB Output is correct
9 Correct 9 ms 47384 KB Output is correct
10 Correct 10 ms 47452 KB Output is correct
11 Correct 10 ms 47532 KB Output is correct
12 Correct 10 ms 47452 KB Output is correct
13 Correct 11 ms 47588 KB Output is correct
14 Correct 10 ms 47452 KB Output is correct
15 Correct 9 ms 47196 KB Output is correct
16 Correct 45 ms 53020 KB Output is correct
17 Correct 49 ms 52816 KB Output is correct
18 Correct 43 ms 52816 KB Output is correct
19 Correct 43 ms 52884 KB Output is correct
20 Correct 51 ms 53072 KB Output is correct
21 Correct 11 ms 47452 KB Output is correct
22 Correct 50 ms 52828 KB Output is correct
23 Correct 46 ms 52828 KB Output is correct
24 Correct 42 ms 52760 KB Output is correct
25 Correct 42 ms 52820 KB Output is correct
26 Correct 47 ms 53016 KB Output is correct
27 Correct 11 ms 47704 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 53116 KB Output is correct
2 Correct 55 ms 53084 KB Output is correct
3 Correct 55 ms 53244 KB Output is correct
4 Correct 55 ms 53116 KB Output is correct
5 Correct 54 ms 53072 KB Output is correct
6 Correct 52 ms 53028 KB Output is correct
7 Correct 54 ms 53112 KB Output is correct
8 Correct 57 ms 53332 KB Output is correct
9 Correct 53 ms 53252 KB Output is correct
10 Correct 55 ms 53080 KB Output is correct
11 Correct 55 ms 53072 KB Output is correct
12 Correct 54 ms 53076 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 47524 KB Output is correct
2 Correct 9 ms 47196 KB Output is correct
3 Correct 11 ms 47452 KB Output is correct
4 Correct 10 ms 47448 KB Output is correct
5 Correct 10 ms 47452 KB Output is correct
6 Correct 10 ms 47452 KB Output is correct
7 Correct 10 ms 47452 KB Output is correct
8 Correct 10 ms 47452 KB Output is correct
9 Correct 9 ms 47384 KB Output is correct
10 Correct 10 ms 47452 KB Output is correct
11 Correct 10 ms 47532 KB Output is correct
12 Correct 10 ms 47452 KB Output is correct
13 Correct 11 ms 47588 KB Output is correct
14 Correct 10 ms 47452 KB Output is correct
15 Correct 9 ms 47196 KB Output is correct
16 Correct 45 ms 53020 KB Output is correct
17 Correct 49 ms 52816 KB Output is correct
18 Correct 43 ms 52816 KB Output is correct
19 Correct 43 ms 52884 KB Output is correct
20 Correct 51 ms 53072 KB Output is correct
21 Correct 11 ms 47452 KB Output is correct
22 Correct 50 ms 52828 KB Output is correct
23 Correct 46 ms 52828 KB Output is correct
24 Correct 42 ms 52760 KB Output is correct
25 Correct 42 ms 52820 KB Output is correct
26 Correct 47 ms 53016 KB Output is correct
27 Correct 11 ms 47704 KB Output is correct
28 Correct 56 ms 53116 KB Output is correct
29 Correct 55 ms 53084 KB Output is correct
30 Correct 55 ms 53244 KB Output is correct
31 Correct 55 ms 53116 KB Output is correct
32 Correct 54 ms 53072 KB Output is correct
33 Correct 52 ms 53028 KB Output is correct
34 Correct 54 ms 53112 KB Output is correct
35 Correct 57 ms 53332 KB Output is correct
36 Correct 53 ms 53252 KB Output is correct
37 Correct 55 ms 53080 KB Output is correct
38 Correct 55 ms 53072 KB Output is correct
39 Correct 54 ms 53076 KB Output is correct
40 Correct 81 ms 52864 KB Output is correct
41 Correct 66 ms 53076 KB Output is correct
42 Correct 80 ms 53080 KB Output is correct
43 Correct 70 ms 53076 KB Output is correct
44 Correct 62 ms 53072 KB Output is correct
45 Correct 57 ms 53076 KB Output is correct
46 Correct 46 ms 53084 KB Output is correct
47 Correct 51 ms 53336 KB Output is correct
48 Correct 42 ms 53084 KB Output is correct
49 Correct 47 ms 53072 KB Output is correct
50 Correct 62 ms 53120 KB Output is correct
51 Correct 55 ms 53220 KB Output is correct
52 Correct 64 ms 53080 KB Output is correct
53 Correct 52 ms 53256 KB Output is correct
54 Correct 53 ms 53180 KB Output is correct
55 Correct 68 ms 53236 KB Output is correct
56 Correct 53 ms 53752 KB Output is correct
57 Correct 44 ms 53132 KB Output is correct