# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
260446 |
2020-08-10T09:20:35 Z |
islingr |
Bridges (APIO19_bridges) |
C++17 |
|
2750 ms |
52388 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]; stack<int> save;
int head(int u) { return nxt[u] < 0 ? u : head(nxt[u]); }
void unite(int u, int v) {
u = head(u); v = head(v);
if (u == v) return save.push(-1);
if (sz[u] > sz[v]) swap(u, v);
nxt[u] = v; sz[v] += sz[u]; save.push(u);
}
void rollback() {
int u = save.top(); save.pop();
if (u < 0) return;
sz[nxt[u]] -= sz[u]; nxt[u] = -1;
}
int u[M], v[M], w[M], ord[M];
short t[Q]; int b[Q], c[Q];
int ans[Q];
bool changed[M];
vector<int> changed_edges;
vector<tuple<int, int, int>> queries;
vector<pair<int, int>> weights[M];
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];
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();
iota(ord, ord + m, 0); sort(ord, ord + m, [&](int x, int y) { return w[x] > w[y]; });
rep(i, l, r)
if (t[i]) queries.eb(c[i], b[i], i);
else changed[b[i]] = true;
rep(e, 0, m) if (changed[e]) weights[e] = {{w[e], 0}}, changed_edges.eb(e);
rep(i, l, r) if (!t[i]) weights[b[i]].eb(c[i], i);
sort(rall(queries));
int e = 0;
for (auto &[z, s, t] : queries) {
while (e < m && z <= w[ord[e]]) { if (!changed[ord[e]]) unite(u[ord[e]], v[ord[e]]); ++e; }
int dsu_changes = 0;
for (auto e : changed_edges) {
int c = 0;
while (c < sz(weights[e]) && weights[e][c].second <= t) ++c;
--c; if (z <= weights[e][c].first) unite(u[e], v[e]), ++dsu_changes;
}
ans[t] = sz[head(s)];
while (dsu_changes--) rollback();
}
rep(i, l, r) if (!t[i]) w[b[i]] = c[i];
}
rep(i, 0, q) if (t[i]) cout << ans[i] << '\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
3456 KB |
Output is correct |
2 |
Correct |
3 ms |
3456 KB |
Output is correct |
3 |
Correct |
49 ms |
3960 KB |
Output is correct |
4 |
Correct |
7 ms |
3840 KB |
Output is correct |
5 |
Correct |
20 ms |
3840 KB |
Output is correct |
6 |
Correct |
21 ms |
3832 KB |
Output is correct |
7 |
Correct |
21 ms |
3712 KB |
Output is correct |
8 |
Correct |
20 ms |
3840 KB |
Output is correct |
9 |
Correct |
25 ms |
3744 KB |
Output is correct |
10 |
Correct |
20 ms |
3840 KB |
Output is correct |
11 |
Correct |
20 ms |
3840 KB |
Output is correct |
12 |
Correct |
21 ms |
3832 KB |
Output is correct |
13 |
Correct |
28 ms |
3840 KB |
Output is correct |
14 |
Correct |
26 ms |
3840 KB |
Output is correct |
15 |
Correct |
23 ms |
3840 KB |
Output is correct |
16 |
Correct |
21 ms |
3968 KB |
Output is correct |
17 |
Correct |
22 ms |
3712 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1538 ms |
29912 KB |
Output is correct |
2 |
Correct |
1528 ms |
29868 KB |
Output is correct |
3 |
Correct |
1527 ms |
29900 KB |
Output is correct |
4 |
Correct |
1532 ms |
30124 KB |
Output is correct |
5 |
Correct |
1544 ms |
30124 KB |
Output is correct |
6 |
Correct |
2177 ms |
29928 KB |
Output is correct |
7 |
Correct |
2196 ms |
29956 KB |
Output is correct |
8 |
Correct |
2212 ms |
29952 KB |
Output is correct |
9 |
Correct |
48 ms |
6392 KB |
Output is correct |
10 |
Correct |
1285 ms |
28972 KB |
Output is correct |
11 |
Correct |
1211 ms |
28972 KB |
Output is correct |
12 |
Correct |
1309 ms |
29424 KB |
Output is correct |
13 |
Correct |
1296 ms |
30008 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1294 ms |
22072 KB |
Output is correct |
2 |
Correct |
917 ms |
10336 KB |
Output is correct |
3 |
Correct |
1472 ms |
21960 KB |
Output is correct |
4 |
Correct |
1271 ms |
22216 KB |
Output is correct |
5 |
Correct |
49 ms |
6396 KB |
Output is correct |
6 |
Correct |
1396 ms |
22064 KB |
Output is correct |
7 |
Correct |
1186 ms |
22088 KB |
Output is correct |
8 |
Correct |
1069 ms |
21896 KB |
Output is correct |
9 |
Correct |
786 ms |
21684 KB |
Output is correct |
10 |
Correct |
718 ms |
21640 KB |
Output is correct |
11 |
Correct |
847 ms |
21896 KB |
Output is correct |
12 |
Correct |
795 ms |
21768 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1646 ms |
51472 KB |
Output is correct |
2 |
Correct |
49 ms |
6392 KB |
Output is correct |
3 |
Correct |
183 ms |
11384 KB |
Output is correct |
4 |
Correct |
91 ms |
11384 KB |
Output is correct |
5 |
Correct |
827 ms |
50056 KB |
Output is correct |
6 |
Correct |
1634 ms |
51544 KB |
Output is correct |
7 |
Correct |
832 ms |
49912 KB |
Output is correct |
8 |
Correct |
760 ms |
29228 KB |
Output is correct |
9 |
Correct |
765 ms |
29352 KB |
Output is correct |
10 |
Correct |
755 ms |
29100 KB |
Output is correct |
11 |
Correct |
1233 ms |
40152 KB |
Output is correct |
12 |
Correct |
1188 ms |
40532 KB |
Output is correct |
13 |
Correct |
1224 ms |
40296 KB |
Output is correct |
14 |
Correct |
735 ms |
50044 KB |
Output is correct |
15 |
Correct |
821 ms |
50288 KB |
Output is correct |
16 |
Correct |
1663 ms |
51032 KB |
Output is correct |
17 |
Correct |
1684 ms |
50880 KB |
Output is correct |
18 |
Correct |
1661 ms |
51272 KB |
Output is correct |
19 |
Correct |
1635 ms |
51096 KB |
Output is correct |
20 |
Correct |
1357 ms |
44128 KB |
Output is correct |
21 |
Correct |
1374 ms |
44088 KB |
Output is correct |
22 |
Correct |
1593 ms |
49272 KB |
Output is correct |
23 |
Correct |
934 ms |
41468 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1538 ms |
29912 KB |
Output is correct |
2 |
Correct |
1528 ms |
29868 KB |
Output is correct |
3 |
Correct |
1527 ms |
29900 KB |
Output is correct |
4 |
Correct |
1532 ms |
30124 KB |
Output is correct |
5 |
Correct |
1544 ms |
30124 KB |
Output is correct |
6 |
Correct |
2177 ms |
29928 KB |
Output is correct |
7 |
Correct |
2196 ms |
29956 KB |
Output is correct |
8 |
Correct |
2212 ms |
29952 KB |
Output is correct |
9 |
Correct |
48 ms |
6392 KB |
Output is correct |
10 |
Correct |
1285 ms |
28972 KB |
Output is correct |
11 |
Correct |
1211 ms |
28972 KB |
Output is correct |
12 |
Correct |
1309 ms |
29424 KB |
Output is correct |
13 |
Correct |
1296 ms |
30008 KB |
Output is correct |
14 |
Correct |
1294 ms |
22072 KB |
Output is correct |
15 |
Correct |
917 ms |
10336 KB |
Output is correct |
16 |
Correct |
1472 ms |
21960 KB |
Output is correct |
17 |
Correct |
1271 ms |
22216 KB |
Output is correct |
18 |
Correct |
49 ms |
6396 KB |
Output is correct |
19 |
Correct |
1396 ms |
22064 KB |
Output is correct |
20 |
Correct |
1186 ms |
22088 KB |
Output is correct |
21 |
Correct |
1069 ms |
21896 KB |
Output is correct |
22 |
Correct |
786 ms |
21684 KB |
Output is correct |
23 |
Correct |
718 ms |
21640 KB |
Output is correct |
24 |
Correct |
847 ms |
21896 KB |
Output is correct |
25 |
Correct |
795 ms |
21768 KB |
Output is correct |
26 |
Correct |
1619 ms |
30076 KB |
Output is correct |
27 |
Correct |
1972 ms |
29744 KB |
Output is correct |
28 |
Correct |
1623 ms |
29996 KB |
Output is correct |
29 |
Correct |
1261 ms |
29708 KB |
Output is correct |
30 |
Correct |
1965 ms |
29868 KB |
Output is correct |
31 |
Correct |
1912 ms |
29808 KB |
Output is correct |
32 |
Correct |
1978 ms |
29976 KB |
Output is correct |
33 |
Correct |
1597 ms |
29868 KB |
Output is correct |
34 |
Correct |
1620 ms |
29992 KB |
Output is correct |
35 |
Correct |
1617 ms |
30120 KB |
Output is correct |
36 |
Correct |
1350 ms |
29808 KB |
Output is correct |
37 |
Correct |
1306 ms |
29976 KB |
Output is correct |
38 |
Correct |
1263 ms |
29864 KB |
Output is correct |
39 |
Correct |
930 ms |
29448 KB |
Output is correct |
40 |
Correct |
914 ms |
29484 KB |
Output is correct |
41 |
Correct |
921 ms |
29408 KB |
Output is correct |
42 |
Correct |
977 ms |
29352 KB |
Output is correct |
43 |
Correct |
977 ms |
29388 KB |
Output is correct |
44 |
Correct |
978 ms |
29228 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
3456 KB |
Output is correct |
2 |
Correct |
3 ms |
3456 KB |
Output is correct |
3 |
Correct |
49 ms |
3960 KB |
Output is correct |
4 |
Correct |
7 ms |
3840 KB |
Output is correct |
5 |
Correct |
20 ms |
3840 KB |
Output is correct |
6 |
Correct |
21 ms |
3832 KB |
Output is correct |
7 |
Correct |
21 ms |
3712 KB |
Output is correct |
8 |
Correct |
20 ms |
3840 KB |
Output is correct |
9 |
Correct |
25 ms |
3744 KB |
Output is correct |
10 |
Correct |
20 ms |
3840 KB |
Output is correct |
11 |
Correct |
20 ms |
3840 KB |
Output is correct |
12 |
Correct |
21 ms |
3832 KB |
Output is correct |
13 |
Correct |
28 ms |
3840 KB |
Output is correct |
14 |
Correct |
26 ms |
3840 KB |
Output is correct |
15 |
Correct |
23 ms |
3840 KB |
Output is correct |
16 |
Correct |
21 ms |
3968 KB |
Output is correct |
17 |
Correct |
22 ms |
3712 KB |
Output is correct |
18 |
Correct |
1538 ms |
29912 KB |
Output is correct |
19 |
Correct |
1528 ms |
29868 KB |
Output is correct |
20 |
Correct |
1527 ms |
29900 KB |
Output is correct |
21 |
Correct |
1532 ms |
30124 KB |
Output is correct |
22 |
Correct |
1544 ms |
30124 KB |
Output is correct |
23 |
Correct |
2177 ms |
29928 KB |
Output is correct |
24 |
Correct |
2196 ms |
29956 KB |
Output is correct |
25 |
Correct |
2212 ms |
29952 KB |
Output is correct |
26 |
Correct |
48 ms |
6392 KB |
Output is correct |
27 |
Correct |
1285 ms |
28972 KB |
Output is correct |
28 |
Correct |
1211 ms |
28972 KB |
Output is correct |
29 |
Correct |
1309 ms |
29424 KB |
Output is correct |
30 |
Correct |
1296 ms |
30008 KB |
Output is correct |
31 |
Correct |
1294 ms |
22072 KB |
Output is correct |
32 |
Correct |
917 ms |
10336 KB |
Output is correct |
33 |
Correct |
1472 ms |
21960 KB |
Output is correct |
34 |
Correct |
1271 ms |
22216 KB |
Output is correct |
35 |
Correct |
49 ms |
6396 KB |
Output is correct |
36 |
Correct |
1396 ms |
22064 KB |
Output is correct |
37 |
Correct |
1186 ms |
22088 KB |
Output is correct |
38 |
Correct |
1069 ms |
21896 KB |
Output is correct |
39 |
Correct |
786 ms |
21684 KB |
Output is correct |
40 |
Correct |
718 ms |
21640 KB |
Output is correct |
41 |
Correct |
847 ms |
21896 KB |
Output is correct |
42 |
Correct |
795 ms |
21768 KB |
Output is correct |
43 |
Correct |
1646 ms |
51472 KB |
Output is correct |
44 |
Correct |
49 ms |
6392 KB |
Output is correct |
45 |
Correct |
183 ms |
11384 KB |
Output is correct |
46 |
Correct |
91 ms |
11384 KB |
Output is correct |
47 |
Correct |
827 ms |
50056 KB |
Output is correct |
48 |
Correct |
1634 ms |
51544 KB |
Output is correct |
49 |
Correct |
832 ms |
49912 KB |
Output is correct |
50 |
Correct |
760 ms |
29228 KB |
Output is correct |
51 |
Correct |
765 ms |
29352 KB |
Output is correct |
52 |
Correct |
755 ms |
29100 KB |
Output is correct |
53 |
Correct |
1233 ms |
40152 KB |
Output is correct |
54 |
Correct |
1188 ms |
40532 KB |
Output is correct |
55 |
Correct |
1224 ms |
40296 KB |
Output is correct |
56 |
Correct |
735 ms |
50044 KB |
Output is correct |
57 |
Correct |
821 ms |
50288 KB |
Output is correct |
58 |
Correct |
1663 ms |
51032 KB |
Output is correct |
59 |
Correct |
1684 ms |
50880 KB |
Output is correct |
60 |
Correct |
1661 ms |
51272 KB |
Output is correct |
61 |
Correct |
1635 ms |
51096 KB |
Output is correct |
62 |
Correct |
1357 ms |
44128 KB |
Output is correct |
63 |
Correct |
1374 ms |
44088 KB |
Output is correct |
64 |
Correct |
1593 ms |
49272 KB |
Output is correct |
65 |
Correct |
934 ms |
41468 KB |
Output is correct |
66 |
Correct |
1619 ms |
30076 KB |
Output is correct |
67 |
Correct |
1972 ms |
29744 KB |
Output is correct |
68 |
Correct |
1623 ms |
29996 KB |
Output is correct |
69 |
Correct |
1261 ms |
29708 KB |
Output is correct |
70 |
Correct |
1965 ms |
29868 KB |
Output is correct |
71 |
Correct |
1912 ms |
29808 KB |
Output is correct |
72 |
Correct |
1978 ms |
29976 KB |
Output is correct |
73 |
Correct |
1597 ms |
29868 KB |
Output is correct |
74 |
Correct |
1620 ms |
29992 KB |
Output is correct |
75 |
Correct |
1617 ms |
30120 KB |
Output is correct |
76 |
Correct |
1350 ms |
29808 KB |
Output is correct |
77 |
Correct |
1306 ms |
29976 KB |
Output is correct |
78 |
Correct |
1263 ms |
29864 KB |
Output is correct |
79 |
Correct |
930 ms |
29448 KB |
Output is correct |
80 |
Correct |
914 ms |
29484 KB |
Output is correct |
81 |
Correct |
921 ms |
29408 KB |
Output is correct |
82 |
Correct |
977 ms |
29352 KB |
Output is correct |
83 |
Correct |
977 ms |
29388 KB |
Output is correct |
84 |
Correct |
978 ms |
29228 KB |
Output is correct |
85 |
Correct |
2523 ms |
52388 KB |
Output is correct |
86 |
Correct |
253 ms |
11360 KB |
Output is correct |
87 |
Correct |
187 ms |
11640 KB |
Output is correct |
88 |
Correct |
1728 ms |
51068 KB |
Output is correct |
89 |
Correct |
2503 ms |
52208 KB |
Output is correct |
90 |
Correct |
1716 ms |
50508 KB |
Output is correct |
91 |
Correct |
1677 ms |
29784 KB |
Output is correct |
92 |
Correct |
1691 ms |
29888 KB |
Output is correct |
93 |
Correct |
2351 ms |
30060 KB |
Output is correct |
94 |
Correct |
2179 ms |
41000 KB |
Output is correct |
95 |
Correct |
2111 ms |
41168 KB |
Output is correct |
96 |
Correct |
2539 ms |
40944 KB |
Output is correct |
97 |
Correct |
1099 ms |
50172 KB |
Output is correct |
98 |
Correct |
1236 ms |
50548 KB |
Output is correct |
99 |
Correct |
2644 ms |
51624 KB |
Output is correct |
100 |
Correct |
2595 ms |
51576 KB |
Output is correct |
101 |
Correct |
2664 ms |
52028 KB |
Output is correct |
102 |
Correct |
2601 ms |
51880 KB |
Output is correct |
103 |
Correct |
2750 ms |
44804 KB |
Output is correct |
104 |
Correct |
2641 ms |
44644 KB |
Output is correct |
105 |
Correct |
1923 ms |
44548 KB |
Output is correct |
106 |
Correct |
1612 ms |
40872 KB |
Output is correct |
107 |
Correct |
1795 ms |
44208 KB |
Output is correct |
108 |
Correct |
2658 ms |
49948 KB |
Output is correct |
109 |
Correct |
2088 ms |
42036 KB |
Output is correct |