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Submission #856963

# Submission time Handle Problem Language Result Execution time Memory
856963 2023-10-05T02:17:16 Z wakandaaa Marshmallow Molecules (CCO19_day2problem2) C++17
25 / 25
 77 ms 52904 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];

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 9 ms 47196 KB Output is correct
2 Correct 10 ms 47424 KB Output is correct
3 Correct 11 ms 47448 KB Output is correct
4 Correct 10 ms 47452 KB Output is correct
5 Correct 10 ms 47528 KB Output is correct
6 Correct 10 ms 47520 KB Output is correct
7 Correct 10 ms 47452 KB Output is correct
8 Correct 9 ms 47448 KB Output is correct
9 Correct 10 ms 47196 KB Output is correct
10 Correct 10 ms 47452 KB Output is correct
11 Correct 12 ms 47452 KB Output is correct
12 Correct 10 ms 47448 KB Output is correct
13 Correct 10 ms 47452 KB Output is correct
14 Correct 10 ms 47452 KB Output is correct
15 Correct 9 ms 47236 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 47196 KB Output is correct
2 Correct 10 ms 47424 KB Output is correct
3 Correct 11 ms 47448 KB Output is correct
4 Correct 10 ms 47452 KB Output is correct
5 Correct 10 ms 47528 KB Output is correct
6 Correct 10 ms 47520 KB Output is correct
7 Correct 10 ms 47452 KB Output is correct
8 Correct 9 ms 47448 KB Output is correct
9 Correct 10 ms 47196 KB Output is correct
10 Correct 10 ms 47452 KB Output is correct
11 Correct 12 ms 47452 KB Output is correct
12 Correct 10 ms 47448 KB Output is correct
13 Correct 10 ms 47452 KB Output is correct
14 Correct 10 ms 47452 KB Output is correct
15 Correct 9 ms 47236 KB Output is correct
16 Correct 44 ms 52104 KB Output is correct
17 Correct 43 ms 52060 KB Output is correct
18 Correct 44 ms 52096 KB Output is correct
19 Correct 52 ms 52308 KB Output is correct
20 Correct 46 ms 52052 KB Output is correct
21 Correct 11 ms 47448 KB Output is correct
22 Correct 49 ms 52112 KB Output is correct
23 Correct 47 ms 52108 KB Output is correct
24 Correct 45 ms 52100 KB Output is correct
25 Correct 46 ms 52060 KB Output is correct
26 Correct 45 ms 52048 KB Output is correct
27 Correct 11 ms 47452 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 52056 KB Output is correct
2 Correct 58 ms 51864 KB Output is correct
3 Correct 52 ms 52104 KB Output is correct
4 Correct 54 ms 52056 KB Output is correct
5 Correct 56 ms 52092 KB Output is correct
6 Correct 51 ms 51968 KB Output is correct
7 Correct 58 ms 52048 KB Output is correct
8 Correct 53 ms 52056 KB Output is correct
9 Correct 51 ms 52060 KB Output is correct
10 Correct 53 ms 52056 KB Output is correct
11 Correct 60 ms 52088 KB Output is correct
12 Correct 54 ms 52048 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 47196 KB Output is correct
2 Correct 10 ms 47424 KB Output is correct
3 Correct 11 ms 47448 KB Output is correct
4 Correct 10 ms 47452 KB Output is correct
5 Correct 10 ms 47528 KB Output is correct
6 Correct 10 ms 47520 KB Output is correct
7 Correct 10 ms 47452 KB Output is correct
8 Correct 9 ms 47448 KB Output is correct
9 Correct 10 ms 47196 KB Output is correct
10 Correct 10 ms 47452 KB Output is correct
11 Correct 12 ms 47452 KB Output is correct
12 Correct 10 ms 47448 KB Output is correct
13 Correct 10 ms 47452 KB Output is correct
14 Correct 10 ms 47452 KB Output is correct
15 Correct 9 ms 47236 KB Output is correct
16 Correct 44 ms 52104 KB Output is correct
17 Correct 43 ms 52060 KB Output is correct
18 Correct 44 ms 52096 KB Output is correct
19 Correct 52 ms 52308 KB Output is correct
20 Correct 46 ms 52052 KB Output is correct
21 Correct 11 ms 47448 KB Output is correct
22 Correct 49 ms 52112 KB Output is correct
23 Correct 47 ms 52108 KB Output is correct
24 Correct 45 ms 52100 KB Output is correct
25 Correct 46 ms 52060 KB Output is correct
26 Correct 45 ms 52048 KB Output is correct
27 Correct 11 ms 47452 KB Output is correct
28 Correct 55 ms 52056 KB Output is correct
29 Correct 58 ms 51864 KB Output is correct
30 Correct 52 ms 52104 KB Output is correct
31 Correct 54 ms 52056 KB Output is correct
32 Correct 56 ms 52092 KB Output is correct
33 Correct 51 ms 51968 KB Output is correct
34 Correct 58 ms 52048 KB Output is correct
35 Correct 53 ms 52056 KB Output is correct
36 Correct 51 ms 52060 KB Output is correct
37 Correct 53 ms 52056 KB Output is correct
38 Correct 60 ms 52088 KB Output is correct
39 Correct 54 ms 52048 KB Output is correct
40 Correct 65 ms 52060 KB Output is correct
41 Correct 65 ms 52060 KB Output is correct
42 Correct 72 ms 52100 KB Output is correct
43 Correct 74 ms 52028 KB Output is correct
44 Correct 56 ms 52048 KB Output is correct
45 Correct 56 ms 52104 KB Output is correct
46 Correct 44 ms 52056 KB Output is correct
47 Correct 46 ms 52052 KB Output is correct
48 Correct 51 ms 52056 KB Output is correct
49 Correct 42 ms 52060 KB Output is correct
50 Correct 56 ms 52060 KB Output is correct
51 Correct 54 ms 51880 KB Output is correct
52 Correct 56 ms 52000 KB Output is correct
53 Correct 51 ms 51864 KB Output is correct
54 Correct 66 ms 52316 KB Output is correct
55 Correct 77 ms 52396 KB Output is correct
56 Correct 53 ms 52904 KB Output is correct
57 Correct 50 ms 51972 KB Output is correct