oj.uz

답안 #1067274

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1067274 2024-08-20T13:51:15 Z _8_8_ 조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2) C++17
100 / 100
 488 ms 75412 KB 
#include <bits/stdc++.h>

using namespace std;
    
typedef long long ll;
const int  N = 1e5 + 12, MOD = (int)1e9 + 7;

int n, m, p[N];
int get(int v) {
    if(p[v] == v) return v;
    return p[v] = get(p[v]);
}
set<int> s[N],g[N],t[N],gr[N];
ll cl(int v) {
    return (int)s[v].size() * 1ll * ((int)s[v].size() - 1);
}
ll d(int v) {
    return (int)s[v].size() * 1ll * (int)t[v].size();
}
ll res = 0;
int sz(int x) {
    return (int)g[x].size() + (int)gr[x].size() + (int)t[x].size() + (int)s[x].size();
}
void merge(int  v,int u) {
    v = get(v);
    u = get(u);
    if(v == u) return;
    res -= cl(v);
    res -= cl(u);
    res -= d(v);
    res -= d(u);
    if(sz(u) < sz(v)) {
        swap(u,v);
    }
    p[v] = u;
    for(int i:s[v]) {
        s[u].insert(i);
        t[u].erase(i);
    }
    for(int i:t[v]) {
        if(s[u].find(i) != s[u].end()) {
            t[u].erase(i);
        } else {
            t[u].insert(i);
        }
    }
    g[u].erase(v);
    g[v].erase(u);
    vector<pair<int,int>> mrg;
    for(int i:g[v]) {
        if(g[i].count(u)) {
            mrg.push_back({i,u});
        }
        g[u].insert(i);
        gr[i].erase(v);
        gr[i].insert(u);
    }
    gr[v].erase(u);
    gr[u].erase(v);
    for(int i:gr[v]) {
        if(g[u].count(i)) {
            mrg.push_back({i,u});
        }
        gr[u].insert(i);
        g[i].erase(v);
        g[i].insert(u);
    }
    res += cl(u);
    res += d(u);
    for(auto [x,y]:mrg) {
        merge(x,y);
    }
}
void test() {
    cin >> n >> m;
    for(int i = 1;i <= n;i++) {
        p[i] = i;
        s[i].insert(i);
    }
    for(int tc = 1;tc <= m;tc++) {
        int a,b;
        cin >> a >> b;
        int A = get(a),B = get(b);
        if(A == B || t[B].count(a)) {
            cout << res << '\n';
            continue;
        }
        // cout << A << ' ' << B << '\n';
        // for(int j:g[B]) {
        // }
        if(g[B].count(A)) {
            merge(A,B);
        } else {
            g[A].insert(B);
            gr[B].insert(A);
            t[B].insert(a);
            res += (int)s[B].size();
        }
        cout << res << '\n';
    }
}
int main() {
    ios_base::sync_with_stdio(false);cin.tie(0);
    int t = 1; 
    // cin >> t;
    while(t--) {
        test();
    }
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 19032 KB Output is correct
2 Correct 3 ms 19036 KB Output is correct
3 Correct 3 ms 19036 KB Output is correct
4 Correct 3 ms 19036 KB Output is correct
5 Correct 3 ms 19036 KB Output is correct
6 Correct 2 ms 19040 KB Output is correct
7 Correct 3 ms 19032 KB Output is correct
8 Correct 3 ms 19292 KB Output is correct
9 Correct 3 ms 19292 KB Output is correct
10 Correct 3 ms 19036 KB Output is correct
11 Correct 3 ms 19036 KB Output is correct
12 Correct 3 ms 19036 KB Output is correct
13 Correct 3 ms 19220 KB Output is correct
14 Correct 3 ms 19036 KB Output is correct
15 Correct 3 ms 19036 KB Output is correct
16 Correct 3 ms 19040 KB Output is correct
17 Correct 2 ms 19036 KB Output is correct
18 Correct 3 ms 19036 KB Output is correct
19 Correct 3 ms 19244 KB Output is correct
20 Correct 3 ms 19036 KB Output is correct
21 Correct 3 ms 19292 KB Output is correct
22 Correct 4 ms 19252 KB Output is correct
23 Correct 4 ms 19036 KB Output is correct
24 Correct 3 ms 19036 KB Output is correct
25 Correct 4 ms 19036 KB Output is correct
26 Correct 3 ms 19036 KB Output is correct
27 Correct 3 ms 19036 KB Output is correct
28 Correct 3 ms 19036 KB Output is correct
29 Correct 3 ms 19124 KB Output is correct
30 Correct 3 ms 19032 KB Output is correct
31 Correct 3 ms 19032 KB Output is correct
32 Correct 3 ms 19032 KB Output is correct
33 Correct 3 ms 19036 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 19032 KB Output is correct
2 Correct 3 ms 19036 KB Output is correct
3 Correct 3 ms 19036 KB Output is correct
4 Correct 3 ms 19036 KB Output is correct
5 Correct 3 ms 19036 KB Output is correct
6 Correct 2 ms 19040 KB Output is correct
7 Correct 3 ms 19032 KB Output is correct
8 Correct 3 ms 19292 KB Output is correct
9 Correct 3 ms 19292 KB Output is correct
10 Correct 3 ms 19036 KB Output is correct
11 Correct 3 ms 19036 KB Output is correct
12 Correct 3 ms 19036 KB Output is correct
13 Correct 3 ms 19220 KB Output is correct
14 Correct 3 ms 19036 KB Output is correct
15 Correct 3 ms 19036 KB Output is correct
16 Correct 3 ms 19040 KB Output is correct
17 Correct 2 ms 19036 KB Output is correct
18 Correct 3 ms 19036 KB Output is correct
19 Correct 3 ms 19244 KB Output is correct
20 Correct 3 ms 19036 KB Output is correct
21 Correct 3 ms 19292 KB Output is correct
22 Correct 4 ms 19252 KB Output is correct
23 Correct 4 ms 19036 KB Output is correct
24 Correct 3 ms 19036 KB Output is correct
25 Correct 4 ms 19036 KB Output is correct
26 Correct 3 ms 19036 KB Output is correct
27 Correct 3 ms 19036 KB Output is correct
28 Correct 3 ms 19036 KB Output is correct
29 Correct 3 ms 19124 KB Output is correct
30 Correct 3 ms 19032 KB Output is correct
31 Correct 3 ms 19032 KB Output is correct
32 Correct 3 ms 19032 KB Output is correct
33 Correct 3 ms 19036 KB Output is correct
34 Correct 4 ms 19292 KB Output is correct
35 Correct 49 ms 22940 KB Output is correct
36 Correct 67 ms 25680 KB Output is correct
37 Correct 80 ms 25688 KB Output is correct
38 Correct 63 ms 25200 KB Output is correct
39 Correct 4 ms 19544 KB Output is correct
40 Correct 5 ms 19804 KB Output is correct
41 Correct 5 ms 19848 KB Output is correct
42 Correct 4 ms 19548 KB Output is correct
43 Correct 5 ms 19548 KB Output is correct
44 Correct 5 ms 19480 KB Output is correct
45 Correct 4 ms 19548 KB Output is correct
46 Correct 4 ms 19548 KB Output is correct
47 Correct 5 ms 19544 KB Output is correct
48 Correct 5 ms 19548 KB Output is correct
49 Correct 10 ms 20316 KB Output is correct
50 Correct 70 ms 28364 KB Output is correct
51 Correct 9 ms 19804 KB Output is correct
52 Correct 57 ms 26680 KB Output is correct
53 Correct 11 ms 20312 KB Output is correct
54 Correct 61 ms 27380 KB Output is correct
55 Correct 7 ms 19800 KB Output is correct
56 Correct 6 ms 19804 KB Output is correct
57 Correct 6 ms 20284 KB Output is correct
58 Correct 7 ms 20316 KB Output is correct
59 Correct 5 ms 19804 KB Output is correct
60 Correct 47 ms 24700 KB Output is correct
61 Correct 6 ms 19804 KB Output is correct
62 Correct 62 ms 27736 KB Output is correct

Subtask #3
83.0 / 83.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 19032 KB Output is correct
2 Correct 3 ms 19036 KB Output is correct
3 Correct 3 ms 19036 KB Output is correct
4 Correct 3 ms 19036 KB Output is correct
5 Correct 3 ms 19036 KB Output is correct
6 Correct 2 ms 19040 KB Output is correct
7 Correct 3 ms 19032 KB Output is correct
8 Correct 3 ms 19292 KB Output is correct
9 Correct 3 ms 19292 KB Output is correct
10 Correct 3 ms 19036 KB Output is correct
11 Correct 3 ms 19036 KB Output is correct
12 Correct 3 ms 19036 KB Output is correct
13 Correct 3 ms 19220 KB Output is correct
14 Correct 3 ms 19036 KB Output is correct
15 Correct 3 ms 19036 KB Output is correct
16 Correct 3 ms 19040 KB Output is correct
17 Correct 2 ms 19036 KB Output is correct
18 Correct 3 ms 19036 KB Output is correct
19 Correct 3 ms 19244 KB Output is correct
20 Correct 3 ms 19036 KB Output is correct
21 Correct 3 ms 19292 KB Output is correct
22 Correct 4 ms 19252 KB Output is correct
23 Correct 4 ms 19036 KB Output is correct
24 Correct 3 ms 19036 KB Output is correct
25 Correct 4 ms 19036 KB Output is correct
26 Correct 3 ms 19036 KB Output is correct
27 Correct 3 ms 19036 KB Output is correct
28 Correct 3 ms 19036 KB Output is correct
29 Correct 3 ms 19124 KB Output is correct
30 Correct 3 ms 19032 KB Output is correct
31 Correct 3 ms 19032 KB Output is correct
32 Correct 3 ms 19032 KB Output is correct
33 Correct 3 ms 19036 KB Output is correct
34 Correct 4 ms 19292 KB Output is correct
35 Correct 49 ms 22940 KB Output is correct
36 Correct 67 ms 25680 KB Output is correct
37 Correct 80 ms 25688 KB Output is correct
38 Correct 63 ms 25200 KB Output is correct
39 Correct 4 ms 19544 KB Output is correct
40 Correct 5 ms 19804 KB Output is correct
41 Correct 5 ms 19848 KB Output is correct
42 Correct 4 ms 19548 KB Output is correct
43 Correct 5 ms 19548 KB Output is correct
44 Correct 5 ms 19480 KB Output is correct
45 Correct 4 ms 19548 KB Output is correct
46 Correct 4 ms 19548 KB Output is correct
47 Correct 5 ms 19544 KB Output is correct
48 Correct 5 ms 19548 KB Output is correct
49 Correct 10 ms 20316 KB Output is correct
50 Correct 70 ms 28364 KB Output is correct
51 Correct 9 ms 19804 KB Output is correct
52 Correct 57 ms 26680 KB Output is correct
53 Correct 11 ms 20312 KB Output is correct
54 Correct 61 ms 27380 KB Output is correct
55 Correct 7 ms 19800 KB Output is correct
56 Correct 6 ms 19804 KB Output is correct
57 Correct 6 ms 20284 KB Output is correct
58 Correct 7 ms 20316 KB Output is correct
59 Correct 5 ms 19804 KB Output is correct
60 Correct 47 ms 24700 KB Output is correct
61 Correct 6 ms 19804 KB Output is correct
62 Correct 62 ms 27736 KB Output is correct
63 Correct 262 ms 72020 KB Output is correct
64 Correct 259 ms 71840 KB Output is correct
65 Correct 282 ms 72016 KB Output is correct
66 Correct 111 ms 37940 KB Output is correct
67 Correct 195 ms 62032 KB Output is correct
68 Correct 108 ms 37972 KB Output is correct
69 Correct 227 ms 37968 KB Output is correct
70 Correct 129 ms 37972 KB Output is correct
71 Correct 131 ms 37972 KB Output is correct
72 Correct 215 ms 46416 KB Output is correct
73 Correct 224 ms 48208 KB Output is correct
74 Correct 488 ms 72020 KB Output is correct
75 Correct 357 ms 45024 KB Output is correct
76 Correct 404 ms 57544 KB Output is correct
77 Correct 408 ms 57784 KB Output is correct
78 Correct 125 ms 40424 KB Output is correct
79 Correct 236 ms 44960 KB Output is correct
80 Correct 140 ms 39252 KB Output is correct
81 Correct 238 ms 42556 KB Output is correct
82 Correct 481 ms 57848 KB Output is correct
83 Correct 457 ms 57940 KB Output is correct
84 Correct 472 ms 75412 KB Output is correct
85 Correct 444 ms 75344 KB Output is correct
86 Correct 167 ms 66132 KB Output is correct
87 Correct 174 ms 68420 KB Output is correct
88 Correct 212 ms 47440 KB Output is correct
89 Correct 408 ms 54736 KB Output is correct