답안 #946770

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
946770	2024-03-15T04:31:43 Z	phoenix0423	조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2)	C++17	100 / 100	1187 ms	117052 KB

joitter2

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
#define fastio ios::sync_with_stdio(false), cin.tie(0)
#define pb push_back
#define eb emplace_back
#define f first
#define s second
#define int long long 
const int maxn = 2e5 + 5;
set<int> st[maxn], in[maxn], out[maxn], sgin[maxn], sgout[maxn];
int sz[maxn];
int par[maxn];
int root(int x){ return x == par[x] ? x : par[x] = root(par[x]);}
int cur = 0;
queue<pll> q;

void merge(int a, int b){
    int fa = root(a), fb = root(b);
    if(fa == fb) return;
    if(out[fb].find(fa) == out[fb].end()){
        if(sgin[fb].find(a) == sgin[fb].end()){
            cur += st[fb].size();
            sgin[fb].insert(a), sgout[a].insert(fb);
            in[fb].insert(fa), out[fa].insert(fb);
        }
        return;
    }
    cur -= 1LL * st[fa].size() * (st[fa].size() - 1);
    cur -= 1LL * st[fb].size() * (st[fb].size() - 1);
    in[fa].erase(fb), out[fb].erase(fa);
    if(st[fa].size() > st[fb].size()) swap(fa, fb);
    for(auto x : st[fa]){
        for(auto y : sgout[x]){
            cur -= st[y].size();
            sgin[y].erase(x);
            q.push({x, y});
        }
        sgout[x].clear();
    }
    for(auto x : sgin[fa]){
        cur -= st[fa].size();
        sgout[x].erase(fa);
        q.push({x, fa});
    }
    sgin[fa].clear();
    for(auto x : out[fa]) in[x].erase(fa);
    for(auto x : in[fa]) out[x].erase(fa);
    for(auto x : st[fa]) st[fb].insert(x);
    par[fa] = fb;
    cur += 1LL * st[fb].size() * (st[fb].size() - 1);
    cur += 1LL * sgin[fb].size() * st[fa].size();
    st[fa].clear();
}

signed main(void){
    fastio;
    int n, m;
    cin>>n>>m;
    for(int i = 0; i < n; i++) par[i] = i;
    for(int i = 0; i < n; i++) st[i].insert(i);
    for(int i = 0; i < m; i++){
        int a, b;
        cin>>a>>b;
        a--, b--;
        q.push({a, b});
        while(!q.empty()){
            auto [a, b] = q.front(); q.pop();
            merge(a, b);
        }
        cout<<cur<<"\n";
    }
}

Subtask #1
1.0 / 1.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	48220 KB	Output is correct
2	Correct	10 ms	48220 KB	Output is correct
3	Correct	10 ms	48288 KB	Output is correct
4	Correct	10 ms	48220 KB	Output is correct
5	Correct	11 ms	48476 KB	Output is correct
6	Correct	11 ms	48476 KB	Output is correct
7	Correct	10 ms	48220 KB	Output is correct
8	Correct	11 ms	48220 KB	Output is correct
9	Correct	10 ms	48396 KB	Output is correct
10	Correct	10 ms	48220 KB	Output is correct
11	Correct	10 ms	48220 KB	Output is correct
12	Correct	13 ms	48292 KB	Output is correct
13	Correct	11 ms	48336 KB	Output is correct
14	Correct	11 ms	48220 KB	Output is correct
15	Correct	12 ms	48220 KB	Output is correct
16	Correct	10 ms	48220 KB	Output is correct
17	Correct	11 ms	48344 KB	Output is correct
18	Correct	11 ms	48248 KB	Output is correct
19	Correct	11 ms	48248 KB	Output is correct
20	Correct	10 ms	48220 KB	Output is correct
21	Correct	20 ms	48216 KB	Output is correct
22	Correct	11 ms	48220 KB	Output is correct
23	Correct	11 ms	48220 KB	Output is correct
24	Correct	13 ms	48220 KB	Output is correct
25	Correct	14 ms	48220 KB	Output is correct
26	Correct	10 ms	48216 KB	Output is correct
27	Correct	10 ms	48220 KB	Output is correct
28	Correct	11 ms	48248 KB	Output is correct
29	Correct	11 ms	48220 KB	Output is correct
30	Correct	15 ms	48324 KB	Output is correct
31	Correct	15 ms	48220 KB	Output is correct
32	Correct	12 ms	48220 KB	Output is correct
33	Correct	11 ms	48220 KB	Output is correct

Subtask #2
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	48220 KB	Output is correct
2	Correct	10 ms	48220 KB	Output is correct
3	Correct	10 ms	48288 KB	Output is correct
4	Correct	10 ms	48220 KB	Output is correct
5	Correct	11 ms	48476 KB	Output is correct
6	Correct	11 ms	48476 KB	Output is correct
7	Correct	10 ms	48220 KB	Output is correct
8	Correct	11 ms	48220 KB	Output is correct
9	Correct	10 ms	48396 KB	Output is correct
10	Correct	10 ms	48220 KB	Output is correct
11	Correct	10 ms	48220 KB	Output is correct
12	Correct	13 ms	48292 KB	Output is correct
13	Correct	11 ms	48336 KB	Output is correct
14	Correct	11 ms	48220 KB	Output is correct
15	Correct	12 ms	48220 KB	Output is correct
16	Correct	10 ms	48220 KB	Output is correct
17	Correct	11 ms	48344 KB	Output is correct
18	Correct	11 ms	48248 KB	Output is correct
19	Correct	11 ms	48248 KB	Output is correct
20	Correct	10 ms	48220 KB	Output is correct
21	Correct	20 ms	48216 KB	Output is correct
22	Correct	11 ms	48220 KB	Output is correct
23	Correct	11 ms	48220 KB	Output is correct
24	Correct	13 ms	48220 KB	Output is correct
25	Correct	14 ms	48220 KB	Output is correct
26	Correct	10 ms	48216 KB	Output is correct
27	Correct	10 ms	48220 KB	Output is correct
28	Correct	11 ms	48248 KB	Output is correct
29	Correct	11 ms	48220 KB	Output is correct
30	Correct	15 ms	48324 KB	Output is correct
31	Correct	15 ms	48220 KB	Output is correct
32	Correct	12 ms	48220 KB	Output is correct
33	Correct	11 ms	48220 KB	Output is correct
34	Correct	12 ms	48472 KB	Output is correct
35	Correct	79 ms	54616 KB	Output is correct
36	Correct	111 ms	58012 KB	Output is correct
37	Correct	105 ms	58252 KB	Output is correct
38	Correct	99 ms	57632 KB	Output is correct
39	Correct	12 ms	48472 KB	Output is correct
40	Correct	13 ms	48472 KB	Output is correct
41	Correct	13 ms	48476 KB	Output is correct
42	Correct	13 ms	48472 KB	Output is correct
43	Correct	13 ms	48476 KB	Output is correct
44	Correct	13 ms	48476 KB	Output is correct
45	Correct	13 ms	48472 KB	Output is correct
46	Correct	12 ms	48476 KB	Output is correct
47	Correct	13 ms	48476 KB	Output is correct
48	Correct	14 ms	48476 KB	Output is correct
49	Correct	23 ms	49500 KB	Output is correct
50	Correct	97 ms	58204 KB	Output is correct
51	Correct	16 ms	48988 KB	Output is correct
52	Correct	85 ms	55916 KB	Output is correct
53	Correct	19 ms	49496 KB	Output is correct
54	Correct	94 ms	56916 KB	Output is correct
55	Correct	18 ms	49240 KB	Output is correct
56	Correct	15 ms	49272 KB	Output is correct
57	Correct	17 ms	49240 KB	Output is correct
58	Correct	16 ms	49188 KB	Output is correct
59	Correct	12 ms	48728 KB	Output is correct
60	Correct	72 ms	53460 KB	Output is correct
61	Correct	14 ms	48732 KB	Output is correct
62	Correct	91 ms	57468 KB	Output is correct

Subtask #3
83.0 / 83.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	48220 KB	Output is correct
2	Correct	10 ms	48220 KB	Output is correct
3	Correct	10 ms	48288 KB	Output is correct
4	Correct	10 ms	48220 KB	Output is correct
5	Correct	11 ms	48476 KB	Output is correct
6	Correct	11 ms	48476 KB	Output is correct
7	Correct	10 ms	48220 KB	Output is correct
8	Correct	11 ms	48220 KB	Output is correct
9	Correct	10 ms	48396 KB	Output is correct
10	Correct	10 ms	48220 KB	Output is correct
11	Correct	10 ms	48220 KB	Output is correct
12	Correct	13 ms	48292 KB	Output is correct
13	Correct	11 ms	48336 KB	Output is correct
14	Correct	11 ms	48220 KB	Output is correct
15	Correct	12 ms	48220 KB	Output is correct
16	Correct	10 ms	48220 KB	Output is correct
17	Correct	11 ms	48344 KB	Output is correct
18	Correct	11 ms	48248 KB	Output is correct
19	Correct	11 ms	48248 KB	Output is correct
20	Correct	10 ms	48220 KB	Output is correct
21	Correct	20 ms	48216 KB	Output is correct
22	Correct	11 ms	48220 KB	Output is correct
23	Correct	11 ms	48220 KB	Output is correct
24	Correct	13 ms	48220 KB	Output is correct
25	Correct	14 ms	48220 KB	Output is correct
26	Correct	10 ms	48216 KB	Output is correct
27	Correct	10 ms	48220 KB	Output is correct
28	Correct	11 ms	48248 KB	Output is correct
29	Correct	11 ms	48220 KB	Output is correct
30	Correct	15 ms	48324 KB	Output is correct
31	Correct	15 ms	48220 KB	Output is correct
32	Correct	12 ms	48220 KB	Output is correct
33	Correct	11 ms	48220 KB	Output is correct
34	Correct	12 ms	48472 KB	Output is correct
35	Correct	79 ms	54616 KB	Output is correct
36	Correct	111 ms	58012 KB	Output is correct
37	Correct	105 ms	58252 KB	Output is correct
38	Correct	99 ms	57632 KB	Output is correct
39	Correct	12 ms	48472 KB	Output is correct
40	Correct	13 ms	48472 KB	Output is correct
41	Correct	13 ms	48476 KB	Output is correct
42	Correct	13 ms	48472 KB	Output is correct
43	Correct	13 ms	48476 KB	Output is correct
44	Correct	13 ms	48476 KB	Output is correct
45	Correct	13 ms	48472 KB	Output is correct
46	Correct	12 ms	48476 KB	Output is correct
47	Correct	13 ms	48476 KB	Output is correct
48	Correct	14 ms	48476 KB	Output is correct
49	Correct	23 ms	49500 KB	Output is correct
50	Correct	97 ms	58204 KB	Output is correct
51	Correct	16 ms	48988 KB	Output is correct
52	Correct	85 ms	55916 KB	Output is correct
53	Correct	19 ms	49496 KB	Output is correct
54	Correct	94 ms	56916 KB	Output is correct
55	Correct	18 ms	49240 KB	Output is correct
56	Correct	15 ms	49272 KB	Output is correct
57	Correct	17 ms	49240 KB	Output is correct
58	Correct	16 ms	49188 KB	Output is correct
59	Correct	12 ms	48728 KB	Output is correct
60	Correct	72 ms	53460 KB	Output is correct
61	Correct	14 ms	48732 KB	Output is correct
62	Correct	91 ms	57468 KB	Output is correct
63	Correct	522 ms	117052 KB	Output is correct
64	Correct	512 ms	116904 KB	Output is correct
65	Correct	545 ms	117036 KB	Output is correct
66	Correct	139 ms	59532 KB	Output is correct
67	Correct	526 ms	68948 KB	Output is correct
68	Correct	178 ms	59816 KB	Output is correct
69	Correct	409 ms	68928 KB	Output is correct
70	Correct	180 ms	59492 KB	Output is correct
71	Correct	138 ms	59416 KB	Output is correct
72	Correct	460 ms	69748 KB	Output is correct
73	Correct	471 ms	69564 KB	Output is correct
74	Correct	1187 ms	93764 KB	Output is correct
75	Correct	531 ms	76880 KB	Output is correct
76	Correct	869 ms	86624 KB	Output is correct
77	Correct	908 ms	86544 KB	Output is correct
78	Correct	257 ms	71196 KB	Output is correct
79	Correct	473 ms	74924 KB	Output is correct
80	Correct	304 ms	71344 KB	Output is correct
81	Correct	428 ms	74664 KB	Output is correct
82	Correct	929 ms	97272 KB	Output is correct
83	Correct	917 ms	96768 KB	Output is correct
84	Correct	719 ms	96232 KB	Output is correct
85	Correct	710 ms	96276 KB	Output is correct
86	Correct	281 ms	60300 KB	Output is correct
87	Correct	272 ms	62544 KB	Output is correct
88	Correct	438 ms	69716 KB	Output is correct
89	Correct	753 ms	85540 KB	Output is correct

답안 #946770

Compilation message

Subtask #1 1.0 / 1.0

Subtask #2 16.0 / 16.0

Subtask #3 83.0 / 83.0

Subtask #1
1.0 / 1.0

Subtask #2
16.0 / 16.0

Subtask #3
83.0 / 83.0