#include <bits/stdc++.h>
using namespace std;
#define v first
#define cost second
#define push_back emplace_back
using ii = pair<int, int>;
const int magic = 400;
const int maxn = 50000 + 5;
int n, m, Q;
int l[maxn << 1], r[maxn << 1], w[maxn << 1];
int ww[maxn << 1];
int par[maxn], sz[maxn];
vector<int> op, id, cost;
int in_buffer[maxn << 1];
int ans[maxn];
vector<int> g[maxn];
vector<int> clr;
vector<int> p, q;
vector<int> ord;
struct List {
int lst[maxn << 1];
int ptr;
List() { ptr = 0; }
inline void insert(int x) { lst[ptr++] = x; }
inline void clear() { ptr = 0; }
} xyz;
int vis[maxn];
int find(int u) {
return par[u] == u ? u : par[u] = find(par[u]);
}
void unite(int u, int v) {
u = find(u);
v = find(v);
if(u == v) return;
if(sz[u] > sz[v]) swap(u, v);
sz[v] += sz[u];
par[u] = v;
}
void dfs(int u, int &res) {
vis[u] = 1;
xyz.insert(u);
res += sz[u];
for(int v : g[u]) {
if(!vis[v]) {
dfs(v, res);
}
}
}
void solve() {
for(int i = 0; i < op.size(); i++) {
if(op[i] == 1) in_buffer[id[i]] = 1;
}
for(int i = 1; i <= n; i++) {
par[i] = i;
sz[i] = 1;
}
for(int i = 0; i < m; i++) {
if(!in_buffer[ord[i]]) {
p.push_back(ord[i]);
}
}
for(int i = 0; i < op.size(); i++) {
if(op[i] == 1) in_buffer[id[i]] = 0;
else q.push_back(i);
}
sort(q.begin(), q.end(), [&](int x, int y){ return cost[x] > cost[y]; });
int i = p.size() - 1;
for(int j : q) {
while(i >= 0 and w[p[i]] >= cost[j]) {
unite(l[p[i]], r[p[i]]);
i--;
}
for(int k = 0; k < j; k++) if(op[k] == 1) {
ww[id[k]] = cost[k];
}
int u, v;
for(int k = 0; k < j; k++) if(op[k] == 1) {
if(ww[id[k]] >= cost[j]) {
u = l[id[k]];
v = r[id[k]];
u = find(u);
v = find(v);
g[u].push_back(v);
g[v].push_back(u);
clr.push_back(u);
clr.push_back(v);
}
}
for(int k = j + 1; k < op.size(); k++) if(op[k] == 1) {
if(!ww[id[k]]) {
if(w[id[k]] >= cost[j]) {
u = l[id[k]];
v = r[id[k]];
u = find(u);
v = find(v);
g[u].push_back(v);
g[v].push_back(u);
clr.push_back(u);
clr.push_back(v);
}
}
}
ans[j] = 0;
dfs(find(id[j]), ans[j]);
for(int k : clr) g[k].clear();
for(int k = 0; k < xyz.ptr; k++)
vis[xyz.lst[k]] = 0;
clr.clear();
xyz.clear();
for(int k = 0; k < j; k++) if(op[k] == 1)
ww[id[k]] = 0;
}
for(int i = 0; i < op.size(); i++) if(op[i] == 1)
w[id[i]] = cost[i];
q.clear();
for(int i = 0; i < op.size(); i++) if(op[i] == 1)
q.push_back(id[i]);
sort(q.begin(), q.end());
q.erase(unique(q.begin(), q.end()), q.end());
sort(q.begin(), q.end(), [](int x, int y) { return w[x] < w[y]; });
ord.clear();
merge(p.begin(), p.end(), q.begin(), q.end(), back_inserter(ord), [](int x, int y){ return w[x] < w[y]; });
for(int i = 0; i < op.size(); i++) {
if(op[i] == 2) {
printf("%d\n", ans[i]);
}
}
p.clear();
q.clear();
op.clear();
id.clear();
cost.clear();
}
int main(int argc, char const *argv[])
{
// freopen("in", "r", stdin);
scanf("%d %d", &n, &m);
{
ord.reserve((maxn << 1) + 10);
p.reserve((maxn << 1) + 10);
q.reserve((maxn << 1) + 10);
op.reserve((maxn << 1) + 10);
id.reserve((maxn << 1) + 10);
cost.reserve((maxn << 1) + 10);
clr.reserve((maxn << 1) + 10);
}
for(int i = 0; i < m; i++) {
scanf("%d %d %d", &l[i], &r[i], &w[i]);
ord.push_back(i);
}
sort(ord.begin(), ord.end(), [](int x, int y) { return w[x] < w[y]; } );
scanf("%d", &Q);
int done = 0;
while(Q--) {
int op, id, cost;
scanf("%d %d %d", &op, &id, &cost);
if(op == 1) id--;
::op.push_back(op);
::id.push_back(id);
::cost.push_back(cost);
if(::op.size() == magic and !done) {
solve();
}
}
if(op.size()) {
solve();
}
return 0;
}
Compilation message
bridges.cpp: In function 'void solve()':
bridges.cpp:57:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 0; i < op.size(); i++) {
~~^~~~~~~~~~~
bridges.cpp:69:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 0; i < op.size(); i++) {
~~^~~~~~~~~~~
bridges.cpp:97:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int k = j + 1; k < op.size(); k++) if(op[k] == 1) {
~~^~~~~~~~~~~
bridges.cpp:124:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 0; i < op.size(); i++) if(op[i] == 1)
~~^~~~~~~~~~~
bridges.cpp:128:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 0; i < op.size(); i++) if(op[i] == 1)
~~^~~~~~~~~~~
bridges.cpp:137:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 0; i < op.size(); i++) {
~~^~~~~~~~~~~
bridges.cpp: In function 'int main(int, const char**)':
bridges.cpp:153:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d", &n, &m);
~~~~~^~~~~~~~~~~~~~~~~
bridges.cpp:164:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d %d", &l[i], &r[i], &w[i]);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bridges.cpp:168:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &Q);
~~~~~^~~~~~~~~~
bridges.cpp:172:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d %d", &op, &id, &cost);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
1664 KB |
Output is correct |
2 |
Correct |
3 ms |
1536 KB |
Output is correct |
3 |
Correct |
26 ms |
1792 KB |
Output is correct |
4 |
Correct |
13 ms |
1664 KB |
Output is correct |
5 |
Correct |
27 ms |
1792 KB |
Output is correct |
6 |
Correct |
26 ms |
1792 KB |
Output is correct |
7 |
Correct |
24 ms |
1664 KB |
Output is correct |
8 |
Correct |
24 ms |
1784 KB |
Output is correct |
9 |
Correct |
29 ms |
1784 KB |
Output is correct |
10 |
Correct |
23 ms |
1792 KB |
Output is correct |
11 |
Correct |
23 ms |
1792 KB |
Output is correct |
12 |
Correct |
24 ms |
1712 KB |
Output is correct |
13 |
Correct |
27 ms |
1792 KB |
Output is correct |
14 |
Correct |
26 ms |
1792 KB |
Output is correct |
15 |
Correct |
27 ms |
1664 KB |
Output is correct |
16 |
Correct |
25 ms |
1664 KB |
Output is correct |
17 |
Correct |
24 ms |
1792 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
845 ms |
5692 KB |
Output is correct |
2 |
Correct |
877 ms |
5596 KB |
Output is correct |
3 |
Correct |
883 ms |
5624 KB |
Output is correct |
4 |
Correct |
864 ms |
5824 KB |
Output is correct |
5 |
Correct |
828 ms |
5712 KB |
Output is correct |
6 |
Correct |
1028 ms |
4856 KB |
Output is correct |
7 |
Correct |
974 ms |
4856 KB |
Output is correct |
8 |
Correct |
955 ms |
4912 KB |
Output is correct |
9 |
Correct |
108 ms |
2040 KB |
Output is correct |
10 |
Correct |
814 ms |
5496 KB |
Output is correct |
11 |
Correct |
805 ms |
5720 KB |
Output is correct |
12 |
Correct |
821 ms |
4860 KB |
Output is correct |
13 |
Correct |
700 ms |
4832 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
960 ms |
4904 KB |
Output is correct |
2 |
Correct |
468 ms |
3076 KB |
Output is correct |
3 |
Correct |
809 ms |
4836 KB |
Output is correct |
4 |
Correct |
739 ms |
4788 KB |
Output is correct |
5 |
Correct |
112 ms |
2384 KB |
Output is correct |
6 |
Correct |
771 ms |
4588 KB |
Output is correct |
7 |
Correct |
704 ms |
4516 KB |
Output is correct |
8 |
Correct |
663 ms |
4728 KB |
Output is correct |
9 |
Correct |
661 ms |
4432 KB |
Output is correct |
10 |
Correct |
509 ms |
4392 KB |
Output is correct |
11 |
Correct |
598 ms |
4600 KB |
Output is correct |
12 |
Correct |
461 ms |
4784 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1108 ms |
5300 KB |
Output is correct |
2 |
Correct |
107 ms |
2212 KB |
Output is correct |
3 |
Correct |
97 ms |
4216 KB |
Output is correct |
4 |
Correct |
74 ms |
4216 KB |
Output is correct |
5 |
Correct |
924 ms |
5284 KB |
Output is correct |
6 |
Correct |
1073 ms |
5240 KB |
Output is correct |
7 |
Correct |
906 ms |
5384 KB |
Output is correct |
8 |
Correct |
644 ms |
4032 KB |
Output is correct |
9 |
Correct |
641 ms |
3960 KB |
Output is correct |
10 |
Correct |
667 ms |
4340 KB |
Output is correct |
11 |
Correct |
1156 ms |
4700 KB |
Output is correct |
12 |
Correct |
988 ms |
4744 KB |
Output is correct |
13 |
Correct |
1035 ms |
4416 KB |
Output is correct |
14 |
Correct |
871 ms |
4696 KB |
Output is correct |
15 |
Correct |
939 ms |
4732 KB |
Output is correct |
16 |
Correct |
1440 ms |
4600 KB |
Output is correct |
17 |
Correct |
1312 ms |
4792 KB |
Output is correct |
18 |
Correct |
1249 ms |
4728 KB |
Output is correct |
19 |
Correct |
1325 ms |
4600 KB |
Output is correct |
20 |
Correct |
1197 ms |
4600 KB |
Output is correct |
21 |
Correct |
1233 ms |
4368 KB |
Output is correct |
22 |
Correct |
1206 ms |
4676 KB |
Output is correct |
23 |
Correct |
1027 ms |
4344 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
845 ms |
5692 KB |
Output is correct |
2 |
Correct |
877 ms |
5596 KB |
Output is correct |
3 |
Correct |
883 ms |
5624 KB |
Output is correct |
4 |
Correct |
864 ms |
5824 KB |
Output is correct |
5 |
Correct |
828 ms |
5712 KB |
Output is correct |
6 |
Correct |
1028 ms |
4856 KB |
Output is correct |
7 |
Correct |
974 ms |
4856 KB |
Output is correct |
8 |
Correct |
955 ms |
4912 KB |
Output is correct |
9 |
Correct |
108 ms |
2040 KB |
Output is correct |
10 |
Correct |
814 ms |
5496 KB |
Output is correct |
11 |
Correct |
805 ms |
5720 KB |
Output is correct |
12 |
Correct |
821 ms |
4860 KB |
Output is correct |
13 |
Correct |
700 ms |
4832 KB |
Output is correct |
14 |
Correct |
960 ms |
4904 KB |
Output is correct |
15 |
Correct |
468 ms |
3076 KB |
Output is correct |
16 |
Correct |
809 ms |
4836 KB |
Output is correct |
17 |
Correct |
739 ms |
4788 KB |
Output is correct |
18 |
Correct |
112 ms |
2384 KB |
Output is correct |
19 |
Correct |
771 ms |
4588 KB |
Output is correct |
20 |
Correct |
704 ms |
4516 KB |
Output is correct |
21 |
Correct |
663 ms |
4728 KB |
Output is correct |
22 |
Correct |
661 ms |
4432 KB |
Output is correct |
23 |
Correct |
509 ms |
4392 KB |
Output is correct |
24 |
Correct |
598 ms |
4600 KB |
Output is correct |
25 |
Correct |
461 ms |
4784 KB |
Output is correct |
26 |
Correct |
958 ms |
5052 KB |
Output is correct |
27 |
Correct |
1056 ms |
5132 KB |
Output is correct |
28 |
Correct |
964 ms |
5048 KB |
Output is correct |
29 |
Correct |
798 ms |
5020 KB |
Output is correct |
30 |
Correct |
1037 ms |
5136 KB |
Output is correct |
31 |
Correct |
1090 ms |
5056 KB |
Output is correct |
32 |
Correct |
1092 ms |
5792 KB |
Output is correct |
33 |
Correct |
960 ms |
5572 KB |
Output is correct |
34 |
Correct |
961 ms |
5624 KB |
Output is correct |
35 |
Correct |
969 ms |
5556 KB |
Output is correct |
36 |
Correct |
845 ms |
5496 KB |
Output is correct |
37 |
Correct |
849 ms |
5496 KB |
Output is correct |
38 |
Correct |
840 ms |
5436 KB |
Output is correct |
39 |
Correct |
740 ms |
5000 KB |
Output is correct |
40 |
Correct |
728 ms |
4972 KB |
Output is correct |
41 |
Correct |
751 ms |
4924 KB |
Output is correct |
42 |
Correct |
632 ms |
5624 KB |
Output is correct |
43 |
Correct |
628 ms |
5540 KB |
Output is correct |
44 |
Correct |
623 ms |
5712 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
1664 KB |
Output is correct |
2 |
Correct |
3 ms |
1536 KB |
Output is correct |
3 |
Correct |
26 ms |
1792 KB |
Output is correct |
4 |
Correct |
13 ms |
1664 KB |
Output is correct |
5 |
Correct |
27 ms |
1792 KB |
Output is correct |
6 |
Correct |
26 ms |
1792 KB |
Output is correct |
7 |
Correct |
24 ms |
1664 KB |
Output is correct |
8 |
Correct |
24 ms |
1784 KB |
Output is correct |
9 |
Correct |
29 ms |
1784 KB |
Output is correct |
10 |
Correct |
23 ms |
1792 KB |
Output is correct |
11 |
Correct |
23 ms |
1792 KB |
Output is correct |
12 |
Correct |
24 ms |
1712 KB |
Output is correct |
13 |
Correct |
27 ms |
1792 KB |
Output is correct |
14 |
Correct |
26 ms |
1792 KB |
Output is correct |
15 |
Correct |
27 ms |
1664 KB |
Output is correct |
16 |
Correct |
25 ms |
1664 KB |
Output is correct |
17 |
Correct |
24 ms |
1792 KB |
Output is correct |
18 |
Correct |
845 ms |
5692 KB |
Output is correct |
19 |
Correct |
877 ms |
5596 KB |
Output is correct |
20 |
Correct |
883 ms |
5624 KB |
Output is correct |
21 |
Correct |
864 ms |
5824 KB |
Output is correct |
22 |
Correct |
828 ms |
5712 KB |
Output is correct |
23 |
Correct |
1028 ms |
4856 KB |
Output is correct |
24 |
Correct |
974 ms |
4856 KB |
Output is correct |
25 |
Correct |
955 ms |
4912 KB |
Output is correct |
26 |
Correct |
108 ms |
2040 KB |
Output is correct |
27 |
Correct |
814 ms |
5496 KB |
Output is correct |
28 |
Correct |
805 ms |
5720 KB |
Output is correct |
29 |
Correct |
821 ms |
4860 KB |
Output is correct |
30 |
Correct |
700 ms |
4832 KB |
Output is correct |
31 |
Correct |
960 ms |
4904 KB |
Output is correct |
32 |
Correct |
468 ms |
3076 KB |
Output is correct |
33 |
Correct |
809 ms |
4836 KB |
Output is correct |
34 |
Correct |
739 ms |
4788 KB |
Output is correct |
35 |
Correct |
112 ms |
2384 KB |
Output is correct |
36 |
Correct |
771 ms |
4588 KB |
Output is correct |
37 |
Correct |
704 ms |
4516 KB |
Output is correct |
38 |
Correct |
663 ms |
4728 KB |
Output is correct |
39 |
Correct |
661 ms |
4432 KB |
Output is correct |
40 |
Correct |
509 ms |
4392 KB |
Output is correct |
41 |
Correct |
598 ms |
4600 KB |
Output is correct |
42 |
Correct |
461 ms |
4784 KB |
Output is correct |
43 |
Correct |
1108 ms |
5300 KB |
Output is correct |
44 |
Correct |
107 ms |
2212 KB |
Output is correct |
45 |
Correct |
97 ms |
4216 KB |
Output is correct |
46 |
Correct |
74 ms |
4216 KB |
Output is correct |
47 |
Correct |
924 ms |
5284 KB |
Output is correct |
48 |
Correct |
1073 ms |
5240 KB |
Output is correct |
49 |
Correct |
906 ms |
5384 KB |
Output is correct |
50 |
Correct |
644 ms |
4032 KB |
Output is correct |
51 |
Correct |
641 ms |
3960 KB |
Output is correct |
52 |
Correct |
667 ms |
4340 KB |
Output is correct |
53 |
Correct |
1156 ms |
4700 KB |
Output is correct |
54 |
Correct |
988 ms |
4744 KB |
Output is correct |
55 |
Correct |
1035 ms |
4416 KB |
Output is correct |
56 |
Correct |
871 ms |
4696 KB |
Output is correct |
57 |
Correct |
939 ms |
4732 KB |
Output is correct |
58 |
Correct |
1440 ms |
4600 KB |
Output is correct |
59 |
Correct |
1312 ms |
4792 KB |
Output is correct |
60 |
Correct |
1249 ms |
4728 KB |
Output is correct |
61 |
Correct |
1325 ms |
4600 KB |
Output is correct |
62 |
Correct |
1197 ms |
4600 KB |
Output is correct |
63 |
Correct |
1233 ms |
4368 KB |
Output is correct |
64 |
Correct |
1206 ms |
4676 KB |
Output is correct |
65 |
Correct |
1027 ms |
4344 KB |
Output is correct |
66 |
Correct |
958 ms |
5052 KB |
Output is correct |
67 |
Correct |
1056 ms |
5132 KB |
Output is correct |
68 |
Correct |
964 ms |
5048 KB |
Output is correct |
69 |
Correct |
798 ms |
5020 KB |
Output is correct |
70 |
Correct |
1037 ms |
5136 KB |
Output is correct |
71 |
Correct |
1090 ms |
5056 KB |
Output is correct |
72 |
Correct |
1092 ms |
5792 KB |
Output is correct |
73 |
Correct |
960 ms |
5572 KB |
Output is correct |
74 |
Correct |
961 ms |
5624 KB |
Output is correct |
75 |
Correct |
969 ms |
5556 KB |
Output is correct |
76 |
Correct |
845 ms |
5496 KB |
Output is correct |
77 |
Correct |
849 ms |
5496 KB |
Output is correct |
78 |
Correct |
840 ms |
5436 KB |
Output is correct |
79 |
Correct |
740 ms |
5000 KB |
Output is correct |
80 |
Correct |
728 ms |
4972 KB |
Output is correct |
81 |
Correct |
751 ms |
4924 KB |
Output is correct |
82 |
Correct |
632 ms |
5624 KB |
Output is correct |
83 |
Correct |
628 ms |
5540 KB |
Output is correct |
84 |
Correct |
623 ms |
5712 KB |
Output is correct |
85 |
Correct |
1671 ms |
6708 KB |
Output is correct |
86 |
Correct |
127 ms |
4984 KB |
Output is correct |
87 |
Correct |
97 ms |
4984 KB |
Output is correct |
88 |
Correct |
1389 ms |
6668 KB |
Output is correct |
89 |
Correct |
1693 ms |
6804 KB |
Output is correct |
90 |
Correct |
1209 ms |
6152 KB |
Output is correct |
91 |
Correct |
1073 ms |
5624 KB |
Output is correct |
92 |
Correct |
1025 ms |
5592 KB |
Output is correct |
93 |
Correct |
1089 ms |
4668 KB |
Output is correct |
94 |
Correct |
1555 ms |
6020 KB |
Output is correct |
95 |
Correct |
1477 ms |
6164 KB |
Output is correct |
96 |
Correct |
1522 ms |
5112 KB |
Output is correct |
97 |
Correct |
1090 ms |
5552 KB |
Output is correct |
98 |
Correct |
1069 ms |
5812 KB |
Output is correct |
99 |
Correct |
1701 ms |
6484 KB |
Output is correct |
100 |
Correct |
1654 ms |
6520 KB |
Output is correct |
101 |
Correct |
1660 ms |
6560 KB |
Output is correct |
102 |
Correct |
1730 ms |
6712 KB |
Output is correct |
103 |
Correct |
1653 ms |
5092 KB |
Output is correct |
104 |
Correct |
1566 ms |
4956 KB |
Output is correct |
105 |
Correct |
1358 ms |
5076 KB |
Output is correct |
106 |
Correct |
1108 ms |
5112 KB |
Output is correct |
107 |
Correct |
1410 ms |
5196 KB |
Output is correct |
108 |
Correct |
1699 ms |
5348 KB |
Output is correct |
109 |
Correct |
1409 ms |
4884 KB |
Output is correct |