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답안 #709764

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
709764 2023-03-14T11:41:00 Z khshg 조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2) C++14
100 / 100
 1126 ms 69748 KB 
#include<bits/stdc++.h>
using namespace std;

using ll = long long;
using ld = long double;
using str = string;

using pi = pair<int, int>;
using pl = pair<ll, ll>;
using pd = pair<ld, ld>;
#define mp make_pair
#define ff first
#define ss second

template<class T> using V = vector<T>;
#define arr array
using vi = V<int>;
using vb = V<bool>;
using vl = V<ll>;
using vd = V<ld>;
using vs = V<str>;
using vpi = V<pi>;
using vpl = V<pl>;
using vpd = V<pd>;

#define sz(x) (int)((x).size())
#define bg(x) begin(x)
#define all(x) bg(x), end(x)
#define rall(x) (x).rbegin(), (x).rend()
#define sor(x) sort(all(x))
#define rsz resize
#define ins insert
#define pb push_back
#define eb emplace_back
#define ft front()
#define bk back()

#define lb lower_bound
#define ub upper_bound

#define FOR(i, a, b) for(int i = (a); i < (b); ++i)
#define F0R(i, a) FOR(i, 0, a)
#define ROF(i, a, b) for(int i = (b) - 1; i >= (a); --i)
#define R0F(i, a) ROF(i, 0, a)
#define rep(a) F0R(_, a)
#define trav(a, x) for(auto& a : x)

template<class T> bool ckmin(T& a, const T& b) { return (b < a ? a = b, 1 : 0); }
template<class T> bool ckmax(T& a, const T& b) { return (b > a ? a = b, 1 : 0); }

#define int long long

const int maxn = 1e5;
int N, M, ans;
queue<pi> q;
int bulgem[maxn], ataman[maxn];
set<int> radj[maxn], adj[maxn], K[maxn];

int parent(int A) {
	return (A == ataman[A] ? A : ataman[A] = parent(ataman[A]));
}

void merge_comp(int A, int B) {
	A = parent(A); B = parent(B);
	if(A == B) return;
	ans += 1LL * bulgem[A] * sz(K[B]) + 1LL * bulgem[B] * sz(K[A]);
	if(sz(K[A]) < sz(K[B])) swap(A, B);
	trav(u, K[B]) {
		if(K[A].find(u) != end(K[A])) ans -= 1LL * (bulgem[A] + bulgem[B]);
		else K[A].ins(u);
	}
	adj[A].erase(B);
	adj[B].erase(A);
	radj[A].erase(B);
	radj[B].erase(A);
	trav(u, adj[B]) {
		radj[u].erase(B);
		adj[A].ins(u);
		radj[u].ins(A);
		if(adj[u].find(A) != end(adj[u])) q.push({u, A});
	}
	trav(u, radj[B]) {
		adj[u].erase(B);
		radj[A].ins(u);
		adj[u].ins(A);
		if(adj[A].find(u) != end(adj[A])) q.push({u, A});
	}
	bulgem[A] += bulgem[B];
	ataman[B] = A;
}

void add_edge(int A, int B) {
	B = parent(B);
	if(K[B].find(A) != end(K[B])) return;
	ans += bulgem[B];
	K[B].ins(A);
	A = parent(A);
	adj[A].ins(B);
	radj[B].ins(A);
	if(adj[B].count(A)) merge_comp(A, B);
}

int32_t main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int N, M; cin >> N >> M;
	F0R(i, N) {
		ataman[i] = i;
		bulgem[i] = 1;
		K[i].ins(i);
	}
	F0R(i, M) {
		int u, v; cin >> u >> v;
		--u; --v;
		add_edge(u, v);
		while(!q.empty()) {
			tie(u, v) = q.ft;
			q.pop();
			merge_comp(u, v);
		}
		cout << ans << '\n';
	}
	return 0;
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14292 KB Output is correct
2 Correct 8 ms 14420 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 8 ms 14408 KB Output is correct
5 Correct 8 ms 14412 KB Output is correct
6 Correct 8 ms 14420 KB Output is correct
7 Correct 8 ms 14420 KB Output is correct
8 Correct 9 ms 14420 KB Output is correct
9 Correct 9 ms 14388 KB Output is correct
10 Correct 8 ms 14420 KB Output is correct
11 Correct 8 ms 14420 KB Output is correct
12 Correct 8 ms 14420 KB Output is correct
13 Correct 8 ms 14428 KB Output is correct
14 Correct 8 ms 14420 KB Output is correct
15 Correct 8 ms 14412 KB Output is correct
16 Correct 9 ms 14420 KB Output is correct
17 Correct 8 ms 14424 KB Output is correct
18 Correct 8 ms 14420 KB Output is correct
19 Correct 10 ms 14420 KB Output is correct
20 Correct 9 ms 14420 KB Output is correct
21 Correct 9 ms 14388 KB Output is correct
22 Correct 8 ms 14424 KB Output is correct
23 Correct 8 ms 14368 KB Output is correct
24 Correct 8 ms 14416 KB Output is correct
25 Correct 9 ms 14420 KB Output is correct
26 Correct 9 ms 14420 KB Output is correct
27 Correct 8 ms 14368 KB Output is correct
28 Correct 7 ms 14420 KB Output is correct
29 Correct 9 ms 14440 KB Output is correct
30 Correct 8 ms 14412 KB Output is correct
31 Correct 8 ms 14352 KB Output is correct
32 Correct 9 ms 14424 KB Output is correct
33 Correct 8 ms 14420 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14292 KB Output is correct
2 Correct 8 ms 14420 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 8 ms 14408 KB Output is correct
5 Correct 8 ms 14412 KB Output is correct
6 Correct 8 ms 14420 KB Output is correct
7 Correct 8 ms 14420 KB Output is correct
8 Correct 9 ms 14420 KB Output is correct
9 Correct 9 ms 14388 KB Output is correct
10 Correct 8 ms 14420 KB Output is correct
11 Correct 8 ms 14420 KB Output is correct
12 Correct 8 ms 14420 KB Output is correct
13 Correct 8 ms 14428 KB Output is correct
14 Correct 8 ms 14420 KB Output is correct
15 Correct 8 ms 14412 KB Output is correct
16 Correct 9 ms 14420 KB Output is correct
17 Correct 8 ms 14424 KB Output is correct
18 Correct 8 ms 14420 KB Output is correct
19 Correct 10 ms 14420 KB Output is correct
20 Correct 9 ms 14420 KB Output is correct
21 Correct 9 ms 14388 KB Output is correct
22 Correct 8 ms 14424 KB Output is correct
23 Correct 8 ms 14368 KB Output is correct
24 Correct 8 ms 14416 KB Output is correct
25 Correct 9 ms 14420 KB Output is correct
26 Correct 9 ms 14420 KB Output is correct
27 Correct 8 ms 14368 KB Output is correct
28 Correct 7 ms 14420 KB Output is correct
29 Correct 9 ms 14440 KB Output is correct
30 Correct 8 ms 14412 KB Output is correct
31 Correct 8 ms 14352 KB Output is correct
32 Correct 9 ms 14424 KB Output is correct
33 Correct 8 ms 14420 KB Output is correct
34 Correct 11 ms 14548 KB Output is correct
35 Correct 102 ms 18876 KB Output is correct
36 Correct 131 ms 21340 KB Output is correct
37 Correct 132 ms 21384 KB Output is correct
38 Correct 127 ms 21028 KB Output is correct
39 Correct 10 ms 14784 KB Output is correct
40 Correct 11 ms 15064 KB Output is correct
41 Correct 13 ms 15128 KB Output is correct
42 Correct 9 ms 14804 KB Output is correct
43 Correct 16 ms 14736 KB Output is correct
44 Correct 11 ms 14808 KB Output is correct
45 Correct 11 ms 14688 KB Output is correct
46 Correct 10 ms 14676 KB Output is correct
47 Correct 11 ms 14932 KB Output is correct
48 Correct 11 ms 14932 KB Output is correct
49 Correct 17 ms 15720 KB Output is correct
50 Correct 133 ms 21592 KB Output is correct
51 Correct 14 ms 15072 KB Output is correct
52 Correct 123 ms 19708 KB Output is correct
53 Correct 18 ms 15572 KB Output is correct
54 Correct 125 ms 20556 KB Output is correct
55 Correct 13 ms 15224 KB Output is correct
56 Correct 12 ms 15188 KB Output is correct
57 Correct 12 ms 15064 KB Output is correct
58 Correct 13 ms 15168 KB Output is correct
59 Correct 13 ms 15108 KB Output is correct
60 Correct 99 ms 18360 KB Output is correct
61 Correct 12 ms 14932 KB Output is correct
62 Correct 124 ms 20920 KB Output is correct

Subtask #3
83.0 / 83.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 14292 KB Output is correct
2 Correct 8 ms 14420 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 8 ms 14408 KB Output is correct
5 Correct 8 ms 14412 KB Output is correct
6 Correct 8 ms 14420 KB Output is correct
7 Correct 8 ms 14420 KB Output is correct
8 Correct 9 ms 14420 KB Output is correct
9 Correct 9 ms 14388 KB Output is correct
10 Correct 8 ms 14420 KB Output is correct
11 Correct 8 ms 14420 KB Output is correct
12 Correct 8 ms 14420 KB Output is correct
13 Correct 8 ms 14428 KB Output is correct
14 Correct 8 ms 14420 KB Output is correct
15 Correct 8 ms 14412 KB Output is correct
16 Correct 9 ms 14420 KB Output is correct
17 Correct 8 ms 14424 KB Output is correct
18 Correct 8 ms 14420 KB Output is correct
19 Correct 10 ms 14420 KB Output is correct
20 Correct 9 ms 14420 KB Output is correct
21 Correct 9 ms 14388 KB Output is correct
22 Correct 8 ms 14424 KB Output is correct
23 Correct 8 ms 14368 KB Output is correct
24 Correct 8 ms 14416 KB Output is correct
25 Correct 9 ms 14420 KB Output is correct
26 Correct 9 ms 14420 KB Output is correct
27 Correct 8 ms 14368 KB Output is correct
28 Correct 7 ms 14420 KB Output is correct
29 Correct 9 ms 14440 KB Output is correct
30 Correct 8 ms 14412 KB Output is correct
31 Correct 8 ms 14352 KB Output is correct
32 Correct 9 ms 14424 KB Output is correct
33 Correct 8 ms 14420 KB Output is correct
34 Correct 11 ms 14548 KB Output is correct
35 Correct 102 ms 18876 KB Output is correct
36 Correct 131 ms 21340 KB Output is correct
37 Correct 132 ms 21384 KB Output is correct
38 Correct 127 ms 21028 KB Output is correct
39 Correct 10 ms 14784 KB Output is correct
40 Correct 11 ms 15064 KB Output is correct
41 Correct 13 ms 15128 KB Output is correct
42 Correct 9 ms 14804 KB Output is correct
43 Correct 16 ms 14736 KB Output is correct
44 Correct 11 ms 14808 KB Output is correct
45 Correct 11 ms 14688 KB Output is correct
46 Correct 10 ms 14676 KB Output is correct
47 Correct 11 ms 14932 KB Output is correct
48 Correct 11 ms 14932 KB Output is correct
49 Correct 17 ms 15720 KB Output is correct
50 Correct 133 ms 21592 KB Output is correct
51 Correct 14 ms 15072 KB Output is correct
52 Correct 123 ms 19708 KB Output is correct
53 Correct 18 ms 15572 KB Output is correct
54 Correct 125 ms 20556 KB Output is correct
55 Correct 13 ms 15224 KB Output is correct
56 Correct 12 ms 15188 KB Output is correct
57 Correct 12 ms 15064 KB Output is correct
58 Correct 13 ms 15168 KB Output is correct
59 Correct 13 ms 15108 KB Output is correct
60 Correct 99 ms 18360 KB Output is correct
61 Correct 12 ms 14932 KB Output is correct
62 Correct 124 ms 20920 KB Output is correct
63 Correct 528 ms 65764 KB Output is correct
64 Correct 560 ms 65784 KB Output is correct
65 Correct 529 ms 65868 KB Output is correct
66 Correct 242 ms 33356 KB Output is correct
67 Correct 471 ms 61548 KB Output is correct
68 Correct 214 ms 34424 KB Output is correct
69 Correct 493 ms 35484 KB Output is correct
70 Correct 275 ms 34408 KB Output is correct
71 Correct 297 ms 34460 KB Output is correct
72 Correct 551 ms 45672 KB Output is correct
73 Correct 514 ms 47404 KB Output is correct
74 Correct 1126 ms 69748 KB Output is correct
75 Correct 683 ms 42400 KB Output is correct
76 Correct 847 ms 54584 KB Output is correct
77 Correct 863 ms 54824 KB Output is correct
78 Correct 261 ms 40396 KB Output is correct
79 Correct 504 ms 44792 KB Output is correct
80 Correct 210 ms 36872 KB Output is correct
81 Correct 416 ms 40528 KB Output is correct
82 Correct 856 ms 55040 KB Output is correct
83 Correct 895 ms 55020 KB Output is correct
84 Correct 702 ms 53716 KB Output is correct
85 Correct 660 ms 53708 KB Output is correct
86 Correct 333 ms 67244 KB Output is correct
87 Correct 360 ms 69488 KB Output is correct
88 Correct 468 ms 46660 KB Output is correct
89 Correct 784 ms 52704 KB Output is correct