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답안 #262098

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
262098 2020-08-12T10:49:24 Z Bubbles 다리 (APIO19_bridges) C++17
100 / 100
 2922 ms 15916 KB 
#include <bits/stdc++.h>
using namespace std;

#define rep(i, a, b) for (auto i = (a); i < (b); ++i)
#define eb(x...) emplace_back(x)
#define all(x) begin(x), end(x)
#define rall(x) (x).rbegin(), (x).rend()
#define sz(x) int((x).size())

const int N = 1 << 16, 	M = 1 << 17, Q = M, B = 1 << 10;

int nxt[N], sz[N];
int head(int u) { return nxt[u] < 0 ? u : nxt[u] = head(nxt[u]); }
void unite(int u, int v) {
	u = head(u); v = head(v);
	if (u == v) return;
	if (sz[u] > sz[v]) swap(u, v);
	nxt[u] = v; sz[v] += sz[u];
}

int u[M], v[M], w[M];
short t[Q]; int b[Q], c[Q], ans[Q];
bool changed[M];
vector<int> changed_nodes, g[N];
vector<tuple<int, int, int>> queries;
vector<pair<int, int>> weights[M];
bool vis[N];

vector<int> ord, changed_edges;

void dfs(int u) { vis[u] = 1; for (int v : g[u]) if (!vis[v]) dfs(v); }
bool cmp(int x, int y) { return w[x] > w[y]; }

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	int n, m; cin >> n >> m;
	rep(e, 0, m) cin >> u[e] >> v[e] >> w[e], --u[e], --v[e];
	ord.resize(m); iota(begin(ord), end(ord), 0); sort(begin(ord), end(ord), cmp);	

	int q; cin >> q;
	rep(i, 0, q) cin >> t[i] >> b[i] >> c[i], --b[i], --t[i];

	for (int l = 0, r = 0; r = min(l + B, q), l < q; l += B) {
		fill(nxt, nxt + n, -1); fill(sz, sz + n, 1);
		fill(changed, changed + m, false); changed_edges.clear();
		queries.clear();

		rep(i, l, r)
			if (t[i]) queries.eb(c[i], b[i], i);
			else changed[b[i]] = true;


		auto second = stable_partition(ord.begin(), ord.end(), [](int x) { return !changed[x]; });
		for_each(second, ord.end(), [](int x) {
			weights[x] = {{w[x], 0}};
			changed_edges.push_back(x);
		});
		ord.erase(second, ord.end());

		rep(i, l, r) if (!t[i]) weights[b[i]].eb(c[i], i);
		sort(rall(queries));

		auto it = begin(ord);
		for (auto &[z, s, t] : queries) {
			while (it != end(ord) && z <= w[*it]) { unite(u[*it], v[*it]); ++it; }

			for (auto e : changed_edges) {
				int c = 0;
				while (c < sz(weights[e]) && weights[e][c].second <= t) ++c;
				if (z <= weights[e][--c].first) {
					int x = head(u[e]), y = head(v[e]);
					g[x].eb(y); g[y].eb(x);
					changed_nodes.eb(x); changed_nodes.eb(y);
				}
			}

			dfs(s = head(s)); vis[s] = 0; ans[t] = sz[s];
			for (int x : changed_nodes) {
				if (vis[x]) ans[t] += sz[x];
				g[x].clear(), vis[x] = 0;
			}
			changed_nodes.clear();
		}

		rep(i, l, r) if (!t[i]) w[b[i]] = c[i];

		sort(begin(changed_edges), end(changed_edges), cmp);
		vector<int> tmp(ord.size()+changed_edges.size());
		merge(ord.begin(), ord.end(), changed_edges.begin(), changed_edges.end(), tmp.begin(), cmp);
		ord = move(tmp);
	}
	rep(i, 0, q) if (t[i]) cout << ans[i] << '\n';
}

Subtask #1
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 4992 KB Output is correct
2 Correct 3 ms 4992 KB Output is correct
3 Correct 83 ms 5368 KB Output is correct
4 Correct 8 ms 5120 KB Output is correct
5 Correct 28 ms 5248 KB Output is correct
6 Correct 25 ms 5248 KB Output is correct
7 Correct 29 ms 5240 KB Output is correct
8 Correct 29 ms 5240 KB Output is correct
9 Correct 37 ms 5240 KB Output is correct
10 Correct 27 ms 5244 KB Output is correct
11 Correct 26 ms 5240 KB Output is correct
12 Correct 28 ms 5248 KB Output is correct
13 Correct 37 ms 5240 KB Output is correct
14 Correct 35 ms 5248 KB Output is correct
15 Correct 36 ms 5240 KB Output is correct
16 Correct 31 ms 5240 KB Output is correct
17 Correct 30 ms 5240 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1828 ms 10472 KB Output is correct
2 Correct 1798 ms 10256 KB Output is correct
3 Correct 1623 ms 10408 KB Output is correct
4 Correct 1521 ms 10328 KB Output is correct
5 Correct 1605 ms 10356 KB Output is correct
6 Correct 2904 ms 9608 KB Output is correct
7 Correct 2922 ms 12204 KB Output is correct
8 Correct 2535 ms 12212 KB Output is correct
9 Correct 49 ms 7928 KB Output is correct
10 Correct 2157 ms 12008 KB Output is correct
11 Correct 1882 ms 12096 KB Output is correct
12 Correct 1170 ms 11232 KB Output is correct
13 Correct 1344 ms 12812 KB Output is correct

Subtask #3
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1461 ms 9432 KB Output is correct
2 Correct 1649 ms 7428 KB Output is correct
3 Correct 2016 ms 9628 KB Output is correct
4 Correct 1845 ms 9388 KB Output is correct
5 Correct 49 ms 6520 KB Output is correct
6 Correct 1712 ms 9308 KB Output is correct
7 Correct 1761 ms 9372 KB Output is correct
8 Correct 1059 ms 9404 KB Output is correct
9 Correct 934 ms 8424 KB Output is correct
10 Correct 627 ms 8320 KB Output is correct
11 Correct 960 ms 9572 KB Output is correct
12 Correct 800 ms 9600 KB Output is correct

Subtask #4
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 508 ms 9388 KB Output is correct
2 Correct 50 ms 6520 KB Output is correct
3 Correct 83 ms 7360 KB Output is correct
4 Correct 59 ms 7272 KB Output is correct
5 Correct 371 ms 9432 KB Output is correct
6 Correct 506 ms 9308 KB Output is correct
7 Correct 366 ms 9564 KB Output is correct
8 Correct 283 ms 8164 KB Output is correct
9 Correct 288 ms 8036 KB Output is correct
10 Correct 286 ms 8420 KB Output is correct
11 Correct 465 ms 8600 KB Output is correct
12 Correct 453 ms 8860 KB Output is correct
13 Correct 455 ms 8872 KB Output is correct
14 Correct 362 ms 9440 KB Output is correct
15 Correct 366 ms 9436 KB Output is correct
16 Correct 561 ms 9316 KB Output is correct
17 Correct 589 ms 9444 KB Output is correct
18 Correct 552 ms 9432 KB Output is correct
19 Correct 563 ms 9312 KB Output is correct
20 Correct 517 ms 9088 KB Output is correct
21 Correct 524 ms 9440 KB Output is correct
22 Correct 537 ms 9348 KB Output is correct
23 Correct 440 ms 9076 KB Output is correct

Subtask #5
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1828 ms 10472 KB Output is correct
2 Correct 1798 ms 10256 KB Output is correct
3 Correct 1623 ms 10408 KB Output is correct
4 Correct 1521 ms 10328 KB Output is correct
5 Correct 1605 ms 10356 KB Output is correct
6 Correct 2904 ms 9608 KB Output is correct
7 Correct 2922 ms 12204 KB Output is correct
8 Correct 2535 ms 12212 KB Output is correct
9 Correct 49 ms 7928 KB Output is correct
10 Correct 2157 ms 12008 KB Output is correct
11 Correct 1882 ms 12096 KB Output is correct
12 Correct 1170 ms 11232 KB Output is correct
13 Correct 1344 ms 12812 KB Output is correct
14 Correct 1461 ms 9432 KB Output is correct
15 Correct 1649 ms 7428 KB Output is correct
16 Correct 2016 ms 9628 KB Output is correct
17 Correct 1845 ms 9388 KB Output is correct
18 Correct 49 ms 6520 KB Output is correct
19 Correct 1712 ms 9308 KB Output is correct
20 Correct 1761 ms 9372 KB Output is correct
21 Correct 1059 ms 9404 KB Output is correct
22 Correct 934 ms 8424 KB Output is correct
23 Correct 627 ms 8320 KB Output is correct
24 Correct 960 ms 9572 KB Output is correct
25 Correct 800 ms 9600 KB Output is correct
26 Correct 1697 ms 13428 KB Output is correct
27 Correct 2249 ms 13572 KB Output is correct
28 Correct 1715 ms 13292 KB Output is correct
29 Correct 1018 ms 13064 KB Output is correct
30 Correct 2232 ms 13420 KB Output is correct
31 Correct 2185 ms 13268 KB Output is correct
32 Correct 2210 ms 13424 KB Output is correct
33 Correct 1684 ms 13384 KB Output is correct
34 Correct 1796 ms 13424 KB Output is correct
35 Correct 1793 ms 13560 KB Output is correct
36 Correct 1093 ms 13172 KB Output is correct
37 Correct 1087 ms 13052 KB Output is correct
38 Correct 1050 ms 13256 KB Output is correct
39 Correct 536 ms 11944 KB Output is correct
40 Correct 535 ms 11772 KB Output is correct
41 Correct 518 ms 11820 KB Output is correct
42 Correct 640 ms 13584 KB Output is correct
43 Correct 631 ms 13484 KB Output is correct
44 Correct 631 ms 13588 KB Output is correct

Subtask #6
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 4992 KB Output is correct
2 Correct 3 ms 4992 KB Output is correct
3 Correct 83 ms 5368 KB Output is correct
4 Correct 8 ms 5120 KB Output is correct
5 Correct 28 ms 5248 KB Output is correct
6 Correct 25 ms 5248 KB Output is correct
7 Correct 29 ms 5240 KB Output is correct
8 Correct 29 ms 5240 KB Output is correct
9 Correct 37 ms 5240 KB Output is correct
10 Correct 27 ms 5244 KB Output is correct
11 Correct 26 ms 5240 KB Output is correct
12 Correct 28 ms 5248 KB Output is correct
13 Correct 37 ms 5240 KB Output is correct
14 Correct 35 ms 5248 KB Output is correct
15 Correct 36 ms 5240 KB Output is correct
16 Correct 31 ms 5240 KB Output is correct
17 Correct 30 ms 5240 KB Output is correct
18 Correct 1828 ms 10472 KB Output is correct
19 Correct 1798 ms 10256 KB Output is correct
20 Correct 1623 ms 10408 KB Output is correct
21 Correct 1521 ms 10328 KB Output is correct
22 Correct 1605 ms 10356 KB Output is correct
23 Correct 2904 ms 9608 KB Output is correct
24 Correct 2922 ms 12204 KB Output is correct
25 Correct 2535 ms 12212 KB Output is correct
26 Correct 49 ms 7928 KB Output is correct
27 Correct 2157 ms 12008 KB Output is correct
28 Correct 1882 ms 12096 KB Output is correct
29 Correct 1170 ms 11232 KB Output is correct
30 Correct 1344 ms 12812 KB Output is correct
31 Correct 1461 ms 9432 KB Output is correct
32 Correct 1649 ms 7428 KB Output is correct
33 Correct 2016 ms 9628 KB Output is correct
34 Correct 1845 ms 9388 KB Output is correct
35 Correct 49 ms 6520 KB Output is correct
36 Correct 1712 ms 9308 KB Output is correct
37 Correct 1761 ms 9372 KB Output is correct
38 Correct 1059 ms 9404 KB Output is correct
39 Correct 934 ms 8424 KB Output is correct
40 Correct 627 ms 8320 KB Output is correct
41 Correct 960 ms 9572 KB Output is correct
42 Correct 800 ms 9600 KB Output is correct
43 Correct 508 ms 9388 KB Output is correct
44 Correct 50 ms 6520 KB Output is correct
45 Correct 83 ms 7360 KB Output is correct
46 Correct 59 ms 7272 KB Output is correct
47 Correct 371 ms 9432 KB Output is correct
48 Correct 506 ms 9308 KB Output is correct
49 Correct 366 ms 9564 KB Output is correct
50 Correct 283 ms 8164 KB Output is correct
51 Correct 288 ms 8036 KB Output is correct
52 Correct 286 ms 8420 KB Output is correct
53 Correct 465 ms 8600 KB Output is correct
54 Correct 453 ms 8860 KB Output is correct
55 Correct 455 ms 8872 KB Output is correct
56 Correct 362 ms 9440 KB Output is correct
57 Correct 366 ms 9436 KB Output is correct
58 Correct 561 ms 9316 KB Output is correct
59 Correct 589 ms 9444 KB Output is correct
60 Correct 552 ms 9432 KB Output is correct
61 Correct 563 ms 9312 KB Output is correct
62 Correct 517 ms 9088 KB Output is correct
63 Correct 524 ms 9440 KB Output is correct
64 Correct 537 ms 9348 KB Output is correct
65 Correct 440 ms 9076 KB Output is correct
66 Correct 1697 ms 13428 KB Output is correct
67 Correct 2249 ms 13572 KB Output is correct
68 Correct 1715 ms 13292 KB Output is correct
69 Correct 1018 ms 13064 KB Output is correct
70 Correct 2232 ms 13420 KB Output is correct
71 Correct 2185 ms 13268 KB Output is correct
72 Correct 2210 ms 13424 KB Output is correct
73 Correct 1684 ms 13384 KB Output is correct
74 Correct 1796 ms 13424 KB Output is correct
75 Correct 1793 ms 13560 KB Output is correct
76 Correct 1093 ms 13172 KB Output is correct
77 Correct 1087 ms 13052 KB Output is correct
78 Correct 1050 ms 13256 KB Output is correct
79 Correct 536 ms 11944 KB Output is correct
80 Correct 535 ms 11772 KB Output is correct
81 Correct 518 ms 11820 KB Output is correct
82 Correct 640 ms 13584 KB Output is correct
83 Correct 631 ms 13484 KB Output is correct
84 Correct 631 ms 13588 KB Output is correct
85 Correct 1779 ms 15796 KB Output is correct
86 Correct 183 ms 9568 KB Output is correct
87 Correct 208 ms 9696 KB Output is correct
88 Correct 1780 ms 13748 KB Output is correct
89 Correct 1721 ms 15792 KB Output is correct
90 Correct 1686 ms 13432 KB Output is correct
91 Correct 1680 ms 13392 KB Output is correct
92 Correct 1828 ms 13356 KB Output is correct
93 Correct 2597 ms 12432 KB Output is correct
94 Correct 1807 ms 14736 KB Output is correct
95 Correct 1879 ms 14872 KB Output is correct
96 Correct 2122 ms 13912 KB Output is correct
97 Correct 797 ms 12640 KB Output is correct
98 Correct 931 ms 13920 KB Output is correct
99 Correct 1793 ms 15664 KB Output is correct
100 Correct 1762 ms 15824 KB Output is correct
101 Correct 1800 ms 15860 KB Output is correct
102 Correct 1814 ms 15916 KB Output is correct
103 Correct 2082 ms 13628 KB Output is correct
104 Correct 2196 ms 13652 KB Output is correct
105 Correct 1225 ms 14352 KB Output is correct
106 Correct 836 ms 14412 KB Output is correct
107 Correct 1085 ms 12824 KB Output is correct
108 Correct 2005 ms 14492 KB Output is correct
109 Correct 1978 ms 12404 KB Output is correct