oj.uz

Submission #985304

# Submission time Handle Problem Language Result Execution time Memory
985304 2024-05-17T14:49:34 Z tfgs Making Friends on Joitter is Fun (JOI20_joitter2) C++17
17 / 100
 2547 ms 1048580 KB 
#include <bits/stdc++.h>
using namespace std;

#ifdef LOCAL
#include "algo/debug.h"
#endif

#define f first
#define s second
template<class T> using V = vector<T>; 
using vi = V<int>;
using vb = V<bool>;
using vs = V<string>;

#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x) 
#define pb push_back
#define lb lower_bound
#define ub upper_bound
template<class T> int lwb(V<T>& a, const T& b) { return lb(all(a),b)-bg(a); }
template<class T> int upb(V<T>& a, const T& b) { return ub(all(a),b)-bg(a); }

int n, m;
queue<array<int, 2>> to_merge;
const int max_n = 1e5;
int e[max_n], ans;
set<int> C[max_n], g[max_n], gr[max_n];

int find(int u) { return e[u] < 0 ? u : e[u]=find(e[u]); }
void weak_connect(int A, int B) {
    // if (A == B) return;
    g[A].insert(B); gr[B].insert(A);
    if (g[B].count(A)) to_merge.push({A, B});
}
void onion(int A, int B) {
    if (A == B) return;
    ans += -e[A]*C[B].size() + -e[B]*C[A].size();
    e[A] += e[B];
    e[B] = A;
    for (int b : C[B]) {
        if (C[A].count(b)) ans += e[A];
        else C[A].insert(b);
    }
    g[A].erase(B), gr[B].erase(A);
    g[B].erase(A), gr[A].erase(B);
    for (int b : g[B]) {
        gr[b].erase(B);
        weak_connect(A, b);
    }
    for (int b : gr[B]) {
        g[b].erase(B);
        weak_connect(b, A);
    }
}

void solve() {
    cin >> n >> m; 
    memset(e, -1, sizeof e);
    for (int i = 0; i < n; i++) C[i].insert(i);
    while (m--) {
        int u, v; cin >> u >> v; u--; v--;
        if (find(u) != find(v) && !C[find(v)].count(u)) {
            C[find(v)].insert(u);
            ans -= e[find(v)];
            weak_connect(find(u), find(v));
            while (to_merge.size()) {
                onion(find(to_merge.front()[0]), find(to_merge.front()[1]));
                to_merge.pop();
            }
        }
        cout << ans << '\n';
    }
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    solve();
    return 0;
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 14684 KB Output is correct
2 Correct 4 ms 14940 KB Output is correct
3 Correct 4 ms 14856 KB Output is correct
4 Correct 3 ms 14940 KB Output is correct
5 Correct 4 ms 14940 KB Output is correct
6 Correct 4 ms 14940 KB Output is correct
7 Correct 5 ms 14940 KB Output is correct
8 Correct 4 ms 15040 KB Output is correct
9 Correct 4 ms 14940 KB Output is correct
10 Correct 4 ms 14940 KB Output is correct
11 Correct 4 ms 14792 KB Output is correct
12 Correct 4 ms 14940 KB Output is correct
13 Correct 4 ms 14772 KB Output is correct
14 Correct 4 ms 14940 KB Output is correct
15 Correct 4 ms 14940 KB Output is correct
16 Correct 4 ms 14940 KB Output is correct
17 Correct 4 ms 14940 KB Output is correct
18 Correct 4 ms 14936 KB Output is correct
19 Correct 4 ms 14940 KB Output is correct
20 Correct 4 ms 14940 KB Output is correct
21 Correct 4 ms 14940 KB Output is correct
22 Correct 4 ms 14936 KB Output is correct
23 Correct 4 ms 14936 KB Output is correct
24 Correct 4 ms 14940 KB Output is correct
25 Correct 4 ms 14940 KB Output is correct
26 Correct 4 ms 14940 KB Output is correct
27 Correct 4 ms 14940 KB Output is correct
28 Correct 4 ms 14940 KB Output is correct
29 Correct 4 ms 14804 KB Output is correct
30 Correct 4 ms 14940 KB Output is correct
31 Correct 5 ms 14940 KB Output is correct
32 Correct 4 ms 14940 KB Output is correct
33 Correct 4 ms 14932 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 14684 KB Output is correct
2 Correct 4 ms 14940 KB Output is correct
3 Correct 4 ms 14856 KB Output is correct
4 Correct 3 ms 14940 KB Output is correct
5 Correct 4 ms 14940 KB Output is correct
6 Correct 4 ms 14940 KB Output is correct
7 Correct 5 ms 14940 KB Output is correct
8 Correct 4 ms 15040 KB Output is correct
9 Correct 4 ms 14940 KB Output is correct
10 Correct 4 ms 14940 KB Output is correct
11 Correct 4 ms 14792 KB Output is correct
12 Correct 4 ms 14940 KB Output is correct
13 Correct 4 ms 14772 KB Output is correct
14 Correct 4 ms 14940 KB Output is correct
15 Correct 4 ms 14940 KB Output is correct
16 Correct 4 ms 14940 KB Output is correct
17 Correct 4 ms 14940 KB Output is correct
18 Correct 4 ms 14936 KB Output is correct
19 Correct 4 ms 14940 KB Output is correct
20 Correct 4 ms 14940 KB Output is correct
21 Correct 4 ms 14940 KB Output is correct
22 Correct 4 ms 14936 KB Output is correct
23 Correct 4 ms 14936 KB Output is correct
24 Correct 4 ms 14940 KB Output is correct
25 Correct 4 ms 14940 KB Output is correct
26 Correct 4 ms 14940 KB Output is correct
27 Correct 4 ms 14940 KB Output is correct
28 Correct 4 ms 14940 KB Output is correct
29 Correct 4 ms 14804 KB Output is correct
30 Correct 4 ms 14940 KB Output is correct
31 Correct 5 ms 14940 KB Output is correct
32 Correct 4 ms 14940 KB Output is correct
33 Correct 4 ms 14932 KB Output is correct
34 Correct 6 ms 15196 KB Output is correct
35 Correct 223 ms 58120 KB Output is correct
36 Correct 764 ms 180596 KB Output is correct
37 Correct 771 ms 180532 KB Output is correct
38 Correct 780 ms 187472 KB Output is correct
39 Correct 237 ms 108856 KB Output is correct
40 Correct 7 ms 15704 KB Output is correct
41 Correct 7 ms 15708 KB Output is correct
42 Correct 227 ms 108932 KB Output is correct
43 Correct 272 ms 111524 KB Output is correct
44 Correct 260 ms 108172 KB Output is correct
45 Correct 233 ms 108852 KB Output is correct
46 Correct 225 ms 108880 KB Output is correct
47 Correct 33 ms 25180 KB Output is correct
48 Correct 32 ms 24980 KB Output is correct
49 Correct 195 ms 71376 KB Output is correct
50 Correct 774 ms 177468 KB Output is correct
51 Correct 295 ms 108376 KB Output is correct
52 Correct 656 ms 167008 KB Output is correct
53 Correct 239 ms 83524 KB Output is correct
54 Correct 724 ms 177492 KB Output is correct
55 Correct 331 ms 117948 KB Output is correct
56 Correct 319 ms 115380 KB Output is correct
57 Correct 258 ms 97312 KB Output is correct
58 Correct 272 ms 99236 KB Output is correct
59 Correct 7 ms 15704 KB Output is correct
60 Correct 58 ms 20400 KB Output is correct
61 Correct 84 ms 42892 KB Output is correct
62 Correct 768 ms 174952 KB Output is correct

Subtask #3
0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 14684 KB Output is correct
2 Correct 4 ms 14940 KB Output is correct
3 Correct 4 ms 14856 KB Output is correct
4 Correct 3 ms 14940 KB Output is correct
5 Correct 4 ms 14940 KB Output is correct
6 Correct 4 ms 14940 KB Output is correct
7 Correct 5 ms 14940 KB Output is correct
8 Correct 4 ms 15040 KB Output is correct
9 Correct 4 ms 14940 KB Output is correct
10 Correct 4 ms 14940 KB Output is correct
11 Correct 4 ms 14792 KB Output is correct
12 Correct 4 ms 14940 KB Output is correct
13 Correct 4 ms 14772 KB Output is correct
14 Correct 4 ms 14940 KB Output is correct
15 Correct 4 ms 14940 KB Output is correct
16 Correct 4 ms 14940 KB Output is correct
17 Correct 4 ms 14940 KB Output is correct
18 Correct 4 ms 14936 KB Output is correct
19 Correct 4 ms 14940 KB Output is correct
20 Correct 4 ms 14940 KB Output is correct
21 Correct 4 ms 14940 KB Output is correct
22 Correct 4 ms 14936 KB Output is correct
23 Correct 4 ms 14936 KB Output is correct
24 Correct 4 ms 14940 KB Output is correct
25 Correct 4 ms 14940 KB Output is correct
26 Correct 4 ms 14940 KB Output is correct
27 Correct 4 ms 14940 KB Output is correct
28 Correct 4 ms 14940 KB Output is correct
29 Correct 4 ms 14804 KB Output is correct
30 Correct 4 ms 14940 KB Output is correct
31 Correct 5 ms 14940 KB Output is correct
32 Correct 4 ms 14940 KB Output is correct
33 Correct 4 ms 14932 KB Output is correct
34 Correct 6 ms 15196 KB Output is correct
35 Correct 223 ms 58120 KB Output is correct
36 Correct 764 ms 180596 KB Output is correct
37 Correct 771 ms 180532 KB Output is correct
38 Correct 780 ms 187472 KB Output is correct
39 Correct 237 ms 108856 KB Output is correct
40 Correct 7 ms 15704 KB Output is correct
41 Correct 7 ms 15708 KB Output is correct
42 Correct 227 ms 108932 KB Output is correct
43 Correct 272 ms 111524 KB Output is correct
44 Correct 260 ms 108172 KB Output is correct
45 Correct 233 ms 108852 KB Output is correct
46 Correct 225 ms 108880 KB Output is correct
47 Correct 33 ms 25180 KB Output is correct
48 Correct 32 ms 24980 KB Output is correct
49 Correct 195 ms 71376 KB Output is correct
50 Correct 774 ms 177468 KB Output is correct
51 Correct 295 ms 108376 KB Output is correct
52 Correct 656 ms 167008 KB Output is correct
53 Correct 239 ms 83524 KB Output is correct
54 Correct 724 ms 177492 KB Output is correct
55 Correct 331 ms 117948 KB Output is correct
56 Correct 319 ms 115380 KB Output is correct
57 Correct 258 ms 97312 KB Output is correct
58 Correct 272 ms 99236 KB Output is correct
59 Correct 7 ms 15704 KB Output is correct
60 Correct 58 ms 20400 KB Output is correct
61 Correct 84 ms 42892 KB Output is correct
62 Correct 768 ms 174952 KB Output is correct
63 Correct 471 ms 67412 KB Output is correct
64 Correct 462 ms 67156 KB Output is correct
65 Correct 486 ms 67272 KB Output is correct
66 Runtime error 2547 ms 1048580 KB Execution killed with signal 9
67 Halted 0 ms 0 KB -