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답안 #288751

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
288751 2020-09-01T20:56:40 Z Saboon 조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2) C++17
100 / 100
 1822 ms 57988 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const int maxn = 1e5 + 10;

set<int> adj[maxn], self[maxn], go[maxn];
int par[maxn];
map<int,int> cnt[maxn];

int get_par(int v){
	return par[v] < 0 ? v : par[v] = get_par(par[v]);
}

int main(){
	ios_base::sync_with_stdio(false);
	int n, m;
	cin >> n >> m;
	for (int i = 1; i <= n; i++)
		self[i].insert(i);
	ll now = 0;
	memset(par, -1, sizeof par);
	while (m --){
		int v, u;
		cin >> v >> u;
		int vp = get_par(v), up = get_par(u);
		if (vp == up or adj[up].count(v)){
			cout << now << '\n';
			continue;
		}
		if (go[up].count(vp)){
			stack<pair<int,int>> s;
			s.push({v,u});
			while (!s.empty()){
				int v = s.top().first, u = s.top().second;
				int vp = get_par(v), up = get_par(u);
				s.pop();
				if (vp == up)
					continue;
				now -= 1LL*par[vp]*(par[vp]+1) + 1LL*par[up]*(par[up]+1);
				now -= -1LL*par[vp]*adj[vp].size() + -1LL*par[up]*adj[up].size();
				if (par[vp] < par[up]){
					swap(vp, up);
					swap(v, u);
				}
				for (auto it : go[vp])
					if (go[it].count(up))
						s.push({up,it});
				for (auto it : adj[vp])
					if (go[up].count(get_par(it)))
						s.push({get_par(it),up});
				for (auto it : self[vp])
					adj[up].erase(it);
				for (auto it : adj[vp])
					if (!self[up].count(it))
						adj[up].insert(it);
				for (auto it : go[vp])
					go[up].insert(it);
				go[up].erase(vp);
				for (auto it : adj[vp]){
					go[get_par(it)].erase(vp);
					go[get_par(it)].insert(up);
				}
				go[vp].clear();
				for (auto it : self[vp])
					self[up].insert(it);
				self[vp].clear(), adj[vp].clear();
				par[up] += par[vp];
				par[vp] = up;
				now += 1LL*par[up]*(par[up]+1) -1LL*par[up]*adj[up].size();
			}
		}
		else{
			now += -par[up];
			go[vp].insert(up);
			adj[up].insert(v);
		}
		cout << now << '\n';
	}
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 19456 KB Output is correct
2 Correct 13 ms 19584 KB Output is correct
3 Correct 13 ms 19456 KB Output is correct
4 Correct 14 ms 19456 KB Output is correct
5 Correct 14 ms 19456 KB Output is correct
6 Correct 13 ms 19456 KB Output is correct
7 Correct 19 ms 19584 KB Output is correct
8 Correct 19 ms 19584 KB Output is correct
9 Correct 19 ms 19584 KB Output is correct
10 Correct 13 ms 19456 KB Output is correct
11 Correct 13 ms 19584 KB Output is correct
12 Correct 14 ms 19456 KB Output is correct
13 Correct 13 ms 19456 KB Output is correct
14 Correct 13 ms 19456 KB Output is correct
15 Correct 13 ms 19456 KB Output is correct
16 Correct 13 ms 19456 KB Output is correct
17 Correct 14 ms 19456 KB Output is correct
18 Correct 13 ms 19456 KB Output is correct
19 Correct 13 ms 19456 KB Output is correct
20 Correct 14 ms 19584 KB Output is correct
21 Correct 19 ms 19584 KB Output is correct
22 Correct 14 ms 19584 KB Output is correct
23 Correct 16 ms 19584 KB Output is correct
24 Correct 14 ms 19584 KB Output is correct
25 Correct 18 ms 19584 KB Output is correct
26 Correct 14 ms 19584 KB Output is correct
27 Correct 14 ms 19584 KB Output is correct
28 Correct 13 ms 19584 KB Output is correct
29 Correct 13 ms 19456 KB Output is correct
30 Correct 13 ms 19456 KB Output is correct
31 Correct 18 ms 19584 KB Output is correct
32 Correct 14 ms 19456 KB Output is correct
33 Correct 18 ms 19584 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 19456 KB Output is correct
2 Correct 13 ms 19584 KB Output is correct
3 Correct 13 ms 19456 KB Output is correct
4 Correct 14 ms 19456 KB Output is correct
5 Correct 14 ms 19456 KB Output is correct
6 Correct 13 ms 19456 KB Output is correct
7 Correct 19 ms 19584 KB Output is correct
8 Correct 19 ms 19584 KB Output is correct
9 Correct 19 ms 19584 KB Output is correct
10 Correct 13 ms 19456 KB Output is correct
11 Correct 13 ms 19584 KB Output is correct
12 Correct 14 ms 19456 KB Output is correct
13 Correct 13 ms 19456 KB Output is correct
14 Correct 13 ms 19456 KB Output is correct
15 Correct 13 ms 19456 KB Output is correct
16 Correct 13 ms 19456 KB Output is correct
17 Correct 14 ms 19456 KB Output is correct
18 Correct 13 ms 19456 KB Output is correct
19 Correct 13 ms 19456 KB Output is correct
20 Correct 14 ms 19584 KB Output is correct
21 Correct 19 ms 19584 KB Output is correct
22 Correct 14 ms 19584 KB Output is correct
23 Correct 16 ms 19584 KB Output is correct
24 Correct 14 ms 19584 KB Output is correct
25 Correct 18 ms 19584 KB Output is correct
26 Correct 14 ms 19584 KB Output is correct
27 Correct 14 ms 19584 KB Output is correct
28 Correct 13 ms 19584 KB Output is correct
29 Correct 13 ms 19456 KB Output is correct
30 Correct 13 ms 19456 KB Output is correct
31 Correct 18 ms 19584 KB Output is correct
32 Correct 14 ms 19456 KB Output is correct
33 Correct 18 ms 19584 KB Output is correct
34 Correct 39 ms 19712 KB Output is correct
35 Correct 749 ms 24824 KB Output is correct
36 Correct 767 ms 27000 KB Output is correct
37 Correct 765 ms 27072 KB Output is correct
38 Correct 766 ms 26824 KB Output is correct
39 Correct 25 ms 19712 KB Output is correct
40 Correct 27 ms 19840 KB Output is correct
41 Correct 28 ms 19840 KB Output is correct
42 Correct 25 ms 19712 KB Output is correct
43 Correct 26 ms 19840 KB Output is correct
44 Correct 26 ms 19712 KB Output is correct
45 Correct 25 ms 19712 KB Output is correct
46 Correct 25 ms 19712 KB Output is correct
47 Correct 27 ms 19840 KB Output is correct
48 Correct 27 ms 19840 KB Output is correct
49 Correct 47 ms 20224 KB Output is correct
50 Correct 783 ms 27128 KB Output is correct
51 Correct 43 ms 19968 KB Output is correct
52 Correct 749 ms 26232 KB Output is correct
53 Correct 46 ms 20216 KB Output is correct
54 Correct 754 ms 26444 KB Output is correct
55 Correct 27 ms 20096 KB Output is correct
56 Correct 27 ms 20096 KB Output is correct
57 Correct 28 ms 20096 KB Output is correct
58 Correct 27 ms 20088 KB Output is correct
59 Correct 27 ms 19712 KB Output is correct
60 Correct 746 ms 24824 KB Output is correct
61 Correct 29 ms 19840 KB Output is correct
62 Correct 764 ms 26892 KB Output is correct

Subtask #3
83.0 / 83.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 19456 KB Output is correct
2 Correct 13 ms 19584 KB Output is correct
3 Correct 13 ms 19456 KB Output is correct
4 Correct 14 ms 19456 KB Output is correct
5 Correct 14 ms 19456 KB Output is correct
6 Correct 13 ms 19456 KB Output is correct
7 Correct 19 ms 19584 KB Output is correct
8 Correct 19 ms 19584 KB Output is correct
9 Correct 19 ms 19584 KB Output is correct
10 Correct 13 ms 19456 KB Output is correct
11 Correct 13 ms 19584 KB Output is correct
12 Correct 14 ms 19456 KB Output is correct
13 Correct 13 ms 19456 KB Output is correct
14 Correct 13 ms 19456 KB Output is correct
15 Correct 13 ms 19456 KB Output is correct
16 Correct 13 ms 19456 KB Output is correct
17 Correct 14 ms 19456 KB Output is correct
18 Correct 13 ms 19456 KB Output is correct
19 Correct 13 ms 19456 KB Output is correct
20 Correct 14 ms 19584 KB Output is correct
21 Correct 19 ms 19584 KB Output is correct
22 Correct 14 ms 19584 KB Output is correct
23 Correct 16 ms 19584 KB Output is correct
24 Correct 14 ms 19584 KB Output is correct
25 Correct 18 ms 19584 KB Output is correct
26 Correct 14 ms 19584 KB Output is correct
27 Correct 14 ms 19584 KB Output is correct
28 Correct 13 ms 19584 KB Output is correct
29 Correct 13 ms 19456 KB Output is correct
30 Correct 13 ms 19456 KB Output is correct
31 Correct 18 ms 19584 KB Output is correct
32 Correct 14 ms 19456 KB Output is correct
33 Correct 18 ms 19584 KB Output is correct
34 Correct 39 ms 19712 KB Output is correct
35 Correct 749 ms 24824 KB Output is correct
36 Correct 767 ms 27000 KB Output is correct
37 Correct 765 ms 27072 KB Output is correct
38 Correct 766 ms 26824 KB Output is correct
39 Correct 25 ms 19712 KB Output is correct
40 Correct 27 ms 19840 KB Output is correct
41 Correct 28 ms 19840 KB Output is correct
42 Correct 25 ms 19712 KB Output is correct
43 Correct 26 ms 19840 KB Output is correct
44 Correct 26 ms 19712 KB Output is correct
45 Correct 25 ms 19712 KB Output is correct
46 Correct 25 ms 19712 KB Output is correct
47 Correct 27 ms 19840 KB Output is correct
48 Correct 27 ms 19840 KB Output is correct
49 Correct 47 ms 20224 KB Output is correct
50 Correct 783 ms 27128 KB Output is correct
51 Correct 43 ms 19968 KB Output is correct
52 Correct 749 ms 26232 KB Output is correct
53 Correct 46 ms 20216 KB Output is correct
54 Correct 754 ms 26444 KB Output is correct
55 Correct 27 ms 20096 KB Output is correct
56 Correct 27 ms 20096 KB Output is correct
57 Correct 28 ms 20096 KB Output is correct
58 Correct 27 ms 20088 KB Output is correct
59 Correct 27 ms 19712 KB Output is correct
60 Correct 746 ms 24824 KB Output is correct
61 Correct 29 ms 19840 KB Output is correct
62 Correct 764 ms 26892 KB Output is correct
63 Correct 1014 ms 57988 KB Output is correct
64 Correct 1016 ms 57904 KB Output is correct
65 Correct 1012 ms 57848 KB Output is correct
66 Correct 701 ms 28664 KB Output is correct
67 Correct 952 ms 33656 KB Output is correct
68 Correct 695 ms 28612 KB Output is correct
69 Correct 936 ms 33400 KB Output is correct
70 Correct 747 ms 28584 KB Output is correct
71 Correct 743 ms 28664 KB Output is correct
72 Correct 986 ms 33796 KB Output is correct
73 Correct 1020 ms 33552 KB Output is correct
74 Correct 1822 ms 42184 KB Output is correct
75 Correct 1371 ms 38096 KB Output is correct
76 Correct 1508 ms 41572 KB Output is correct
77 Correct 1516 ms 41720 KB Output is correct
78 Correct 608 ms 34552 KB Output is correct
79 Correct 1168 ms 37880 KB Output is correct
80 Correct 599 ms 34552 KB Output is correct
81 Correct 1110 ms 37752 KB Output is correct
82 Correct 1164 ms 46712 KB Output is correct
83 Correct 1208 ms 46584 KB Output is correct
84 Correct 1165 ms 47028 KB Output is correct
85 Correct 1163 ms 47032 KB Output is correct
86 Correct 839 ms 30412 KB Output is correct
87 Correct 1097 ms 32448 KB Output is correct
88 Correct 982 ms 33528 KB Output is correct
89 Correct 1442 ms 41420 KB Output is correct