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답안 #472388

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
472388 2021-09-13T12:50:16 Z sidon 조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2) C++17
100 / 100
 1529 ms 131744 KB 
#include <bits/stdc++.h>
using namespace std;
typedef int64_t ll;
#define sz(Z) ll(size(Z))
 
const int MAX_N = 100'001;
 
int N, M;
 
int P[MAX_N];
ll in[MAX_N], S[MAX_N], edge_count;
 
set<int> g[MAX_N], h[MAX_N];
unordered_map<int, int> out[MAX_N];
 
queue<array<int, 2>> Q;
 
int find(int u){
	return P[u] == u ? u : P[u] = find(P[u]);
}
 
int main() {
	ios::sync_with_stdio(0), cin.tie(0);
 
	cin >> N >> M;
 
	for(int u = 1; u <= N; ++u)
		P[u] = u, S[u] = 1;
 
	while(M--){
		int A, B;
		cin >> A >> B;
 
		int u = find(A), v = find(B);
 
		if(u != v && h[v].find(A) == end(h[v])) {
			if(g[v].find(u) != end(g[v]))
				Q.push({u, v});
	 
			edge_count += S[v];
	 
			h[v].insert(A);
			g[u].insert(v);
			++out[u][v], ++in[v];
		}
 
		while(!empty(Q)) {
			u = find(Q.front()[0]), v = find(Q.front()[1]);
			Q.pop();
			if(u == v) continue;
 
			if(sz(g[u]) + sz(h[u]) < sz(g[v]) + sz(h[v]))
				swap(u, v);
 
			edge_count += (S[u] - out[u][v]) * S[v];
			edge_count += (S[v] - out[v][u]) * S[u];
 
			in[u] -= out[v][u];
			in[v] -= out[u][v];
 
			for(int w : g[v]) {
				g[u].insert(w);
				w = find(w);
				if(g[w].find(u) != end(g[w])) Q.push({u, w});
				out[u][w] += out[v][w];
				out[v][w] = 0;
			}
 
 			for(int w : h[v]) {
				if(find(w) != u && find(w) != v) {
					if(g[u].find(find(w)) != end(g[u])) Q.push({u, w});
					if(h[u].find(w) != end(h[u])) {
						edge_count -= S[u];
						--in[u];
					} else {
						g[find(w)].insert(u);
						++out[find(w)][u];
					}
				}

			}
 
			edge_count += in[u] * S[v] + in[v] * S[u];
 
			P[v] = u, S[u] += S[v];
			in[u] += in[v];

			for(int w : h[v]) h[u].insert(w);
		}
 
		cout << edge_count << '\n';
	}
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 15180 KB Output is correct
2 Correct 10 ms 15104 KB Output is correct
3 Correct 12 ms 15148 KB Output is correct
4 Correct 10 ms 15160 KB Output is correct
5 Correct 13 ms 15200 KB Output is correct
6 Correct 10 ms 15180 KB Output is correct
7 Correct 11 ms 15180 KB Output is correct
8 Correct 12 ms 15212 KB Output is correct
9 Correct 10 ms 15180 KB Output is correct
10 Correct 10 ms 15180 KB Output is correct
11 Correct 10 ms 15204 KB Output is correct
12 Correct 10 ms 15132 KB Output is correct
13 Correct 10 ms 15180 KB Output is correct
14 Correct 10 ms 15180 KB Output is correct
15 Correct 11 ms 15208 KB Output is correct
16 Correct 10 ms 15180 KB Output is correct
17 Correct 11 ms 15192 KB Output is correct
18 Correct 11 ms 15180 KB Output is correct
19 Correct 10 ms 15180 KB Output is correct
20 Correct 10 ms 15200 KB Output is correct
21 Correct 11 ms 15180 KB Output is correct
22 Correct 10 ms 15196 KB Output is correct
23 Correct 11 ms 15180 KB Output is correct
24 Correct 11 ms 15204 KB Output is correct
25 Correct 12 ms 15208 KB Output is correct
26 Correct 10 ms 15180 KB Output is correct
27 Correct 10 ms 15180 KB Output is correct
28 Correct 10 ms 15180 KB Output is correct
29 Correct 10 ms 15152 KB Output is correct
30 Correct 10 ms 15136 KB Output is correct
31 Correct 12 ms 15228 KB Output is correct
32 Correct 10 ms 15308 KB Output is correct
33 Correct 12 ms 15180 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 15180 KB Output is correct
2 Correct 10 ms 15104 KB Output is correct
3 Correct 12 ms 15148 KB Output is correct
4 Correct 10 ms 15160 KB Output is correct
5 Correct 13 ms 15200 KB Output is correct
6 Correct 10 ms 15180 KB Output is correct
7 Correct 11 ms 15180 KB Output is correct
8 Correct 12 ms 15212 KB Output is correct
9 Correct 10 ms 15180 KB Output is correct
10 Correct 10 ms 15180 KB Output is correct
11 Correct 10 ms 15204 KB Output is correct
12 Correct 10 ms 15132 KB Output is correct
13 Correct 10 ms 15180 KB Output is correct
14 Correct 10 ms 15180 KB Output is correct
15 Correct 11 ms 15208 KB Output is correct
16 Correct 10 ms 15180 KB Output is correct
17 Correct 11 ms 15192 KB Output is correct
18 Correct 11 ms 15180 KB Output is correct
19 Correct 10 ms 15180 KB Output is correct
20 Correct 10 ms 15200 KB Output is correct
21 Correct 11 ms 15180 KB Output is correct
22 Correct 10 ms 15196 KB Output is correct
23 Correct 11 ms 15180 KB Output is correct
24 Correct 11 ms 15204 KB Output is correct
25 Correct 12 ms 15208 KB Output is correct
26 Correct 10 ms 15180 KB Output is correct
27 Correct 10 ms 15180 KB Output is correct
28 Correct 10 ms 15180 KB Output is correct
29 Correct 10 ms 15152 KB Output is correct
30 Correct 10 ms 15136 KB Output is correct
31 Correct 12 ms 15228 KB Output is correct
32 Correct 10 ms 15308 KB Output is correct
33 Correct 12 ms 15180 KB Output is correct
34 Correct 13 ms 15308 KB Output is correct
35 Correct 105 ms 19500 KB Output is correct
36 Correct 137 ms 22164 KB Output is correct
37 Correct 138 ms 22320 KB Output is correct
38 Correct 137 ms 21832 KB Output is correct
39 Correct 15 ms 16060 KB Output is correct
40 Correct 20 ms 16876 KB Output is correct
41 Correct 19 ms 16720 KB Output is correct
42 Correct 15 ms 15980 KB Output is correct
43 Correct 16 ms 15960 KB Output is correct
44 Correct 15 ms 16104 KB Output is correct
45 Correct 15 ms 15948 KB Output is correct
46 Correct 15 ms 15948 KB Output is correct
47 Correct 18 ms 16400 KB Output is correct
48 Correct 17 ms 16440 KB Output is correct
49 Correct 24 ms 17136 KB Output is correct
50 Correct 143 ms 22540 KB Output is correct
51 Correct 20 ms 16364 KB Output is correct
52 Correct 117 ms 20624 KB Output is correct
53 Correct 24 ms 17000 KB Output is correct
54 Correct 125 ms 21448 KB Output is correct
55 Correct 18 ms 16460 KB Output is correct
56 Correct 17 ms 16332 KB Output is correct
57 Correct 18 ms 16332 KB Output is correct
58 Correct 17 ms 16448 KB Output is correct
59 Correct 19 ms 16972 KB Output is correct
60 Correct 107 ms 19924 KB Output is correct
61 Correct 18 ms 16404 KB Output is correct
62 Correct 132 ms 21680 KB Output is correct

Subtask #3
83.0 / 83.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 15180 KB Output is correct
2 Correct 10 ms 15104 KB Output is correct
3 Correct 12 ms 15148 KB Output is correct
4 Correct 10 ms 15160 KB Output is correct
5 Correct 13 ms 15200 KB Output is correct
6 Correct 10 ms 15180 KB Output is correct
7 Correct 11 ms 15180 KB Output is correct
8 Correct 12 ms 15212 KB Output is correct
9 Correct 10 ms 15180 KB Output is correct
10 Correct 10 ms 15180 KB Output is correct
11 Correct 10 ms 15204 KB Output is correct
12 Correct 10 ms 15132 KB Output is correct
13 Correct 10 ms 15180 KB Output is correct
14 Correct 10 ms 15180 KB Output is correct
15 Correct 11 ms 15208 KB Output is correct
16 Correct 10 ms 15180 KB Output is correct
17 Correct 11 ms 15192 KB Output is correct
18 Correct 11 ms 15180 KB Output is correct
19 Correct 10 ms 15180 KB Output is correct
20 Correct 10 ms 15200 KB Output is correct
21 Correct 11 ms 15180 KB Output is correct
22 Correct 10 ms 15196 KB Output is correct
23 Correct 11 ms 15180 KB Output is correct
24 Correct 11 ms 15204 KB Output is correct
25 Correct 12 ms 15208 KB Output is correct
26 Correct 10 ms 15180 KB Output is correct
27 Correct 10 ms 15180 KB Output is correct
28 Correct 10 ms 15180 KB Output is correct
29 Correct 10 ms 15152 KB Output is correct
30 Correct 10 ms 15136 KB Output is correct
31 Correct 12 ms 15228 KB Output is correct
32 Correct 10 ms 15308 KB Output is correct
33 Correct 12 ms 15180 KB Output is correct
34 Correct 13 ms 15308 KB Output is correct
35 Correct 105 ms 19500 KB Output is correct
36 Correct 137 ms 22164 KB Output is correct
37 Correct 138 ms 22320 KB Output is correct
38 Correct 137 ms 21832 KB Output is correct
39 Correct 15 ms 16060 KB Output is correct
40 Correct 20 ms 16876 KB Output is correct
41 Correct 19 ms 16720 KB Output is correct
42 Correct 15 ms 15980 KB Output is correct
43 Correct 16 ms 15960 KB Output is correct
44 Correct 15 ms 16104 KB Output is correct
45 Correct 15 ms 15948 KB Output is correct
46 Correct 15 ms 15948 KB Output is correct
47 Correct 18 ms 16400 KB Output is correct
48 Correct 17 ms 16440 KB Output is correct
49 Correct 24 ms 17136 KB Output is correct
50 Correct 143 ms 22540 KB Output is correct
51 Correct 20 ms 16364 KB Output is correct
52 Correct 117 ms 20624 KB Output is correct
53 Correct 24 ms 17000 KB Output is correct
54 Correct 125 ms 21448 KB Output is correct
55 Correct 18 ms 16460 KB Output is correct
56 Correct 17 ms 16332 KB Output is correct
57 Correct 18 ms 16332 KB Output is correct
58 Correct 17 ms 16448 KB Output is correct
59 Correct 19 ms 16972 KB Output is correct
60 Correct 107 ms 19924 KB Output is correct
61 Correct 18 ms 16404 KB Output is correct
62 Correct 132 ms 21680 KB Output is correct
63 Correct 578 ms 68328 KB Output is correct
64 Correct 568 ms 68192 KB Output is correct
65 Correct 585 ms 68348 KB Output is correct
66 Correct 457 ms 57264 KB Output is correct
67 Correct 838 ms 112988 KB Output is correct
68 Correct 440 ms 57264 KB Output is correct
69 Correct 592 ms 57120 KB Output is correct
70 Correct 501 ms 57296 KB Output is correct
71 Correct 502 ms 57292 KB Output is correct
72 Correct 833 ms 80272 KB Output is correct
73 Correct 858 ms 83476 KB Output is correct
74 Correct 1529 ms 114772 KB Output is correct
75 Correct 799 ms 64308 KB Output is correct
76 Correct 1079 ms 86532 KB Output is correct
77 Correct 1100 ms 86816 KB Output is correct
78 Correct 401 ms 48516 KB Output is correct
79 Correct 633 ms 62392 KB Output is correct
80 Correct 384 ms 51832 KB Output is correct
81 Correct 587 ms 61012 KB Output is correct
82 Correct 970 ms 76988 KB Output is correct
83 Correct 976 ms 77012 KB Output is correct
84 Correct 827 ms 76972 KB Output is correct
85 Correct 868 ms 77108 KB Output is correct
86 Correct 744 ms 129124 KB Output is correct
87 Correct 790 ms 131744 KB Output is correct
88 Correct 950 ms 83140 KB Output is correct
89 Correct 1236 ms 85768 KB Output is correct