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답안 #911174

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
911174 2024-01-18T14:36:07 Z mickey080929 조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2) C++17
100 / 100
 2225 ms 113280 KB 
#include <bits/stdc++.h>
 
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
 
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;

ll par[100010];
ll sz[100010];
set<ll> in[100010], out[100010], all[100010];

ll Find(ll x) {
	if (x == par[x]) return x;
	return par[x] = Find(par[x]);
}

ll ans = 0;
vector<pll> mrg;

void add_edge(ll u, ll v) {
	in[v].insert(u);
	out[u].insert(v);
	if (in[u].count(v)) mrg.push_back({u, v});
}

void Union(ll x, ll y) {
	x = Find(x);
	y = Find(y);
	if (x == y) return;
	if (all[x].size() < all[y].size()) swap(x, y);
	ans += all[x].size() * sz[y] + all[y].size() * sz[x];
	sz[x] += sz[y];
	par[y] = x;
	for (auto &v : all[y]) {
		if (all[x].count(v)) ans -= sz[x];
		else all[x].insert(v);
	}
	in[y].erase(x); out[y].erase(x); in[x].erase(y); out[x].erase(y);
	for (auto &v : in[y]) {
		add_edge(v, x);
	}
	for (auto &v : out[y]) {
		add_edge(x, v);
	}
}

int main() {
	ios_base :: sync_with_stdio(false); cin.tie(NULL);
	ll N, M;
	cin >> N >> M;
	for (ll i=1; i<=N; i++) {
		par[i] = i;
		sz[i] = 1;
		all[i].insert(i);
	}
	for (ll i=0; i<M; i++) {
		ll u, v;
		cin >> u >> v;
		v = Find(v);
		if (all[v].count(u)) {
			cout << ans << '\n';
			continue;
		}
		all[v].insert(u);
		ans += sz[v];
		u = Find(u);
		add_edge(u, v);
		while (!mrg.empty()) {
			auto t = mrg.back();
			mrg.pop_back();
			Union(t.first, t.second);
		}
		cout << ans << '\n';
	}
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 14940 KB Output is correct
2 Correct 3 ms 14940 KB Output is correct
3 Correct 3 ms 15000 KB Output is correct
4 Correct 3 ms 14940 KB Output is correct
5 Correct 4 ms 14940 KB Output is correct
6 Correct 3 ms 14940 KB Output is correct
7 Correct 5 ms 14940 KB Output is correct
8 Correct 4 ms 14940 KB Output is correct
9 Correct 4 ms 14964 KB Output is correct
10 Correct 4 ms 14936 KB Output is correct
11 Correct 4 ms 14940 KB Output is correct
12 Correct 4 ms 14768 KB Output is correct
13 Correct 4 ms 14940 KB Output is correct
14 Correct 4 ms 14940 KB Output is correct
15 Correct 4 ms 14940 KB Output is correct
16 Correct 4 ms 15000 KB Output is correct
17 Correct 4 ms 14940 KB Output is correct
18 Correct 4 ms 14940 KB Output is correct
19 Correct 3 ms 14940 KB Output is correct
20 Correct 3 ms 14940 KB Output is correct
21 Correct 4 ms 14936 KB Output is correct
22 Correct 4 ms 14940 KB Output is correct
23 Correct 4 ms 14940 KB Output is correct
24 Correct 4 ms 14960 KB Output is correct
25 Correct 4 ms 15008 KB Output is correct
26 Correct 4 ms 14940 KB Output is correct
27 Correct 4 ms 14964 KB Output is correct
28 Correct 4 ms 14936 KB Output is correct
29 Correct 4 ms 14940 KB Output is correct
30 Correct 4 ms 14940 KB Output is correct
31 Correct 4 ms 14940 KB Output is correct
32 Correct 4 ms 14996 KB Output is correct
33 Correct 4 ms 15092 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 14940 KB Output is correct
2 Correct 3 ms 14940 KB Output is correct
3 Correct 3 ms 15000 KB Output is correct
4 Correct 3 ms 14940 KB Output is correct
5 Correct 4 ms 14940 KB Output is correct
6 Correct 3 ms 14940 KB Output is correct
7 Correct 5 ms 14940 KB Output is correct
8 Correct 4 ms 14940 KB Output is correct
9 Correct 4 ms 14964 KB Output is correct
10 Correct 4 ms 14936 KB Output is correct
11 Correct 4 ms 14940 KB Output is correct
12 Correct 4 ms 14768 KB Output is correct
13 Correct 4 ms 14940 KB Output is correct
14 Correct 4 ms 14940 KB Output is correct
15 Correct 4 ms 14940 KB Output is correct
16 Correct 4 ms 15000 KB Output is correct
17 Correct 4 ms 14940 KB Output is correct
18 Correct 4 ms 14940 KB Output is correct
19 Correct 3 ms 14940 KB Output is correct
20 Correct 3 ms 14940 KB Output is correct
21 Correct 4 ms 14936 KB Output is correct
22 Correct 4 ms 14940 KB Output is correct
23 Correct 4 ms 14940 KB Output is correct
24 Correct 4 ms 14960 KB Output is correct
25 Correct 4 ms 15008 KB Output is correct
26 Correct 4 ms 14940 KB Output is correct
27 Correct 4 ms 14964 KB Output is correct
28 Correct 4 ms 14936 KB Output is correct
29 Correct 4 ms 14940 KB Output is correct
30 Correct 4 ms 14940 KB Output is correct
31 Correct 4 ms 14940 KB Output is correct
32 Correct 4 ms 14996 KB Output is correct
33 Correct 4 ms 15092 KB Output is correct
34 Correct 8 ms 15192 KB Output is correct
35 Correct 81 ms 21192 KB Output is correct
36 Correct 111 ms 24276 KB Output is correct
37 Correct 112 ms 24408 KB Output is correct
38 Correct 137 ms 24164 KB Output is correct
39 Correct 6 ms 15196 KB Output is correct
40 Correct 9 ms 16076 KB Output is correct
41 Correct 8 ms 16220 KB Output is correct
42 Correct 6 ms 15196 KB Output is correct
43 Correct 7 ms 15196 KB Output is correct
44 Correct 9 ms 15196 KB Output is correct
45 Correct 6 ms 15284 KB Output is correct
46 Correct 6 ms 15192 KB Output is correct
47 Correct 8 ms 15708 KB Output is correct
48 Correct 8 ms 15708 KB Output is correct
49 Correct 17 ms 16728 KB Output is correct
50 Correct 110 ms 24524 KB Output is correct
51 Correct 10 ms 15708 KB Output is correct
52 Correct 100 ms 22820 KB Output is correct
53 Correct 16 ms 16476 KB Output is correct
54 Correct 103 ms 23632 KB Output is correct
55 Correct 9 ms 15964 KB Output is correct
56 Correct 9 ms 15784 KB Output is correct
57 Correct 10 ms 15964 KB Output is correct
58 Correct 9 ms 15964 KB Output is correct
59 Correct 8 ms 15708 KB Output is correct
60 Correct 81 ms 20580 KB Output is correct
61 Correct 8 ms 15704 KB Output is correct
62 Correct 105 ms 23756 KB Output is correct

Subtask #3
83.0 / 83.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 14940 KB Output is correct
2 Correct 3 ms 14940 KB Output is correct
3 Correct 3 ms 15000 KB Output is correct
4 Correct 3 ms 14940 KB Output is correct
5 Correct 4 ms 14940 KB Output is correct
6 Correct 3 ms 14940 KB Output is correct
7 Correct 5 ms 14940 KB Output is correct
8 Correct 4 ms 14940 KB Output is correct
9 Correct 4 ms 14964 KB Output is correct
10 Correct 4 ms 14936 KB Output is correct
11 Correct 4 ms 14940 KB Output is correct
12 Correct 4 ms 14768 KB Output is correct
13 Correct 4 ms 14940 KB Output is correct
14 Correct 4 ms 14940 KB Output is correct
15 Correct 4 ms 14940 KB Output is correct
16 Correct 4 ms 15000 KB Output is correct
17 Correct 4 ms 14940 KB Output is correct
18 Correct 4 ms 14940 KB Output is correct
19 Correct 3 ms 14940 KB Output is correct
20 Correct 3 ms 14940 KB Output is correct
21 Correct 4 ms 14936 KB Output is correct
22 Correct 4 ms 14940 KB Output is correct
23 Correct 4 ms 14940 KB Output is correct
24 Correct 4 ms 14960 KB Output is correct
25 Correct 4 ms 15008 KB Output is correct
26 Correct 4 ms 14940 KB Output is correct
27 Correct 4 ms 14964 KB Output is correct
28 Correct 4 ms 14936 KB Output is correct
29 Correct 4 ms 14940 KB Output is correct
30 Correct 4 ms 14940 KB Output is correct
31 Correct 4 ms 14940 KB Output is correct
32 Correct 4 ms 14996 KB Output is correct
33 Correct 4 ms 15092 KB Output is correct
34 Correct 8 ms 15192 KB Output is correct
35 Correct 81 ms 21192 KB Output is correct
36 Correct 111 ms 24276 KB Output is correct
37 Correct 112 ms 24408 KB Output is correct
38 Correct 137 ms 24164 KB Output is correct
39 Correct 6 ms 15196 KB Output is correct
40 Correct 9 ms 16076 KB Output is correct
41 Correct 8 ms 16220 KB Output is correct
42 Correct 6 ms 15196 KB Output is correct
43 Correct 7 ms 15196 KB Output is correct
44 Correct 9 ms 15196 KB Output is correct
45 Correct 6 ms 15284 KB Output is correct
46 Correct 6 ms 15192 KB Output is correct
47 Correct 8 ms 15708 KB Output is correct
48 Correct 8 ms 15708 KB Output is correct
49 Correct 17 ms 16728 KB Output is correct
50 Correct 110 ms 24524 KB Output is correct
51 Correct 10 ms 15708 KB Output is correct
52 Correct 100 ms 22820 KB Output is correct
53 Correct 16 ms 16476 KB Output is correct
54 Correct 103 ms 23632 KB Output is correct
55 Correct 9 ms 15964 KB Output is correct
56 Correct 9 ms 15784 KB Output is correct
57 Correct 10 ms 15964 KB Output is correct
58 Correct 9 ms 15964 KB Output is correct
59 Correct 8 ms 15708 KB Output is correct
60 Correct 81 ms 20580 KB Output is correct
61 Correct 8 ms 15704 KB Output is correct
62 Correct 105 ms 23756 KB Output is correct
63 Correct 699 ms 68656 KB Output is correct
64 Correct 712 ms 68624 KB Output is correct
65 Correct 694 ms 68688 KB Output is correct
66 Correct 222 ms 34492 KB Output is correct
67 Correct 997 ms 101580 KB Output is correct
68 Correct 200 ms 34592 KB Output is correct
69 Correct 444 ms 35908 KB Output is correct
70 Correct 210 ms 34816 KB Output is correct
71 Correct 220 ms 34388 KB Output is correct
72 Correct 676 ms 57140 KB Output is correct
73 Correct 706 ms 59948 KB Output is correct
74 Correct 2225 ms 113280 KB Output is correct
75 Correct 755 ms 47184 KB Output is correct
76 Correct 1286 ms 72908 KB Output is correct
77 Correct 1292 ms 73024 KB Output is correct
78 Correct 293 ms 46356 KB Output is correct
79 Correct 573 ms 52000 KB Output is correct
80 Correct 251 ms 40552 KB Output is correct
81 Correct 446 ms 44600 KB Output is correct
82 Correct 998 ms 66440 KB Output is correct
83 Correct 1036 ms 66452 KB Output is correct
84 Correct 995 ms 70596 KB Output is correct
85 Correct 1030 ms 70968 KB Output is correct
86 Correct 360 ms 67212 KB Output is correct
87 Correct 380 ms 69456 KB Output is correct
88 Correct 806 ms 58600 KB Output is correct
89 Correct 1499 ms 70100 KB Output is correct