#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "debug.hpp"
#else
#define debug(...) "MJ >> LAMELO"
#endif
const int B = 800;
struct DSU {
vector<int> f, siz, st;
DSU(int n) : f(n), siz(n, 1) {
iota(f.begin(), f.end(), 0);
}
int find(int x) {
while (x != f[x]) {
// x = f[x] = f[f[x]];
x = f[x];
}
return x;
}
bool same(int x, int y) {
return find(x) == find(y);
}
bool merge(int x, int y) {
x = find(x);
y = find(y);
if (x == y) {
return false;
}
if (siz[y] > siz[x]) {
swap(x, y);
}
siz[x] += siz[y];
f[y] = x;
st.push_back(y);
return true;
}
int size(int x) {
return siz[find(x)];
}
void rollback() {
if (!st.empty()) {
int x = st.back();
st.pop_back();
siz[f[x]] -= siz[x];
f[x] = x;
}
}
};
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n, m;
cin >> n >> m;
vector<array<int, 3>> e;
for (int i = 0; i < m; i++) {
int u, v, d;
cin >> u >> v >> d;
--u;
--v;
e.push_back({u, v, d});
}
int q;
cin >> q;
vector<array<int, 3>> Q(q);
for (int i = 0; i < q; i++) {
cin >> Q[i][0] >> Q[i][1] >> Q[i][2];
Q[i][1]--;
}
vector<int> ans(q);
for (int L = 0; L < q; L += B) {
vector<int> mark(m);
vector<int> same;
vector<int> diff;
vector<int> t2;
int R = min(L + B, q);
for (int i = L; i < R; i++) {
if (Q[i][0] == 1) {
mark[Q[i][1]] = 1;
diff.push_back(Q[i][1]);
} else {
t2.push_back(i);
}
}
vector<vector<int>> c(B);
for (int i = L; i < R; i++) {
if (Q[i][0] == 1) {
e[Q[i][1]][2] = Q[i][2];
} else {
for (int j : diff) {
if (e[j][2] >= Q[i][2]) {
c[i - L].push_back(j);
}
}
}
}
for (int i = 0; i < m; i++) {
if (!mark[i]) {
same.push_back(i);
}
}
sort(t2.begin(), t2.end(), [&](int i, int j) {
return Q[i][2] > Q[j][2];
});
sort(same.begin(), same.end(), [&](int i, int j) {
return e[i][2] > e[j][2];
});
DSU d(n);
int ptr = 0;
for (int i : t2) {
while (ptr < (int) same.size() && e[same[ptr]][2] >= Q[i][2]) {
d.merge(e[same[ptr]][0], e[same[ptr]][1]);
ptr++;
}
int cnt = 0;
for (int j : c[i - L]) {
if (d.merge(e[j][0], e[j][1])) {
cnt++;
}
}
ans[i] = d.size(Q[i][1]);
while (cnt--) {
d.rollback();
}
}
}
for (int i = 0; i < q; i++) {
if (Q[i][0] == 2) {
cout << ans[i] << '\n';
}
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
320 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
33 ms |
1152 KB |
Output is correct |
4 |
Correct |
5 ms |
596 KB |
Output is correct |
5 |
Correct |
26 ms |
1108 KB |
Output is correct |
6 |
Correct |
20 ms |
1160 KB |
Output is correct |
7 |
Correct |
25 ms |
1100 KB |
Output is correct |
8 |
Correct |
30 ms |
1104 KB |
Output is correct |
9 |
Correct |
28 ms |
1416 KB |
Output is correct |
10 |
Correct |
33 ms |
1132 KB |
Output is correct |
11 |
Correct |
31 ms |
1052 KB |
Output is correct |
12 |
Correct |
39 ms |
1288 KB |
Output is correct |
13 |
Correct |
39 ms |
1108 KB |
Output is correct |
14 |
Correct |
33 ms |
1108 KB |
Output is correct |
15 |
Correct |
37 ms |
1164 KB |
Output is correct |
16 |
Correct |
30 ms |
1224 KB |
Output is correct |
17 |
Correct |
31 ms |
1224 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1494 ms |
7344 KB |
Output is correct |
2 |
Correct |
1476 ms |
7300 KB |
Output is correct |
3 |
Correct |
1454 ms |
7144 KB |
Output is correct |
4 |
Correct |
1536 ms |
7256 KB |
Output is correct |
5 |
Correct |
1503 ms |
7272 KB |
Output is correct |
6 |
Correct |
2017 ms |
7540 KB |
Output is correct |
7 |
Correct |
1997 ms |
7344 KB |
Output is correct |
8 |
Correct |
2033 ms |
7468 KB |
Output is correct |
9 |
Correct |
35 ms |
3396 KB |
Output is correct |
10 |
Correct |
1092 ms |
6108 KB |
Output is correct |
11 |
Correct |
1012 ms |
6392 KB |
Output is correct |
12 |
Correct |
1310 ms |
6788 KB |
Output is correct |
13 |
Correct |
1326 ms |
7044 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1121 ms |
6032 KB |
Output is correct |
2 |
Correct |
705 ms |
4636 KB |
Output is correct |
3 |
Correct |
1281 ms |
6056 KB |
Output is correct |
4 |
Correct |
1077 ms |
6200 KB |
Output is correct |
5 |
Correct |
36 ms |
3404 KB |
Output is correct |
6 |
Correct |
1225 ms |
6184 KB |
Output is correct |
7 |
Correct |
1022 ms |
5928 KB |
Output is correct |
8 |
Correct |
918 ms |
5804 KB |
Output is correct |
9 |
Correct |
776 ms |
5892 KB |
Output is correct |
10 |
Correct |
726 ms |
5708 KB |
Output is correct |
11 |
Correct |
808 ms |
5688 KB |
Output is correct |
12 |
Correct |
728 ms |
5592 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1993 ms |
8956 KB |
Output is correct |
2 |
Correct |
35 ms |
3408 KB |
Output is correct |
3 |
Correct |
187 ms |
4820 KB |
Output is correct |
4 |
Correct |
88 ms |
4924 KB |
Output is correct |
5 |
Correct |
984 ms |
7320 KB |
Output is correct |
6 |
Correct |
1838 ms |
8832 KB |
Output is correct |
7 |
Correct |
982 ms |
7188 KB |
Output is correct |
8 |
Correct |
941 ms |
6556 KB |
Output is correct |
9 |
Correct |
947 ms |
6864 KB |
Output is correct |
10 |
Correct |
950 ms |
6400 KB |
Output is correct |
11 |
Correct |
1407 ms |
7812 KB |
Output is correct |
12 |
Correct |
1403 ms |
7772 KB |
Output is correct |
13 |
Correct |
1423 ms |
7576 KB |
Output is correct |
14 |
Correct |
845 ms |
7292 KB |
Output is correct |
15 |
Correct |
905 ms |
7292 KB |
Output is correct |
16 |
Correct |
1864 ms |
9020 KB |
Output is correct |
17 |
Correct |
1895 ms |
8764 KB |
Output is correct |
18 |
Correct |
1843 ms |
8844 KB |
Output is correct |
19 |
Correct |
1856 ms |
8772 KB |
Output is correct |
20 |
Correct |
1581 ms |
7768 KB |
Output is correct |
21 |
Correct |
1584 ms |
7756 KB |
Output is correct |
22 |
Correct |
1775 ms |
8160 KB |
Output is correct |
23 |
Correct |
1042 ms |
6604 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1494 ms |
7344 KB |
Output is correct |
2 |
Correct |
1476 ms |
7300 KB |
Output is correct |
3 |
Correct |
1454 ms |
7144 KB |
Output is correct |
4 |
Correct |
1536 ms |
7256 KB |
Output is correct |
5 |
Correct |
1503 ms |
7272 KB |
Output is correct |
6 |
Correct |
2017 ms |
7540 KB |
Output is correct |
7 |
Correct |
1997 ms |
7344 KB |
Output is correct |
8 |
Correct |
2033 ms |
7468 KB |
Output is correct |
9 |
Correct |
35 ms |
3396 KB |
Output is correct |
10 |
Correct |
1092 ms |
6108 KB |
Output is correct |
11 |
Correct |
1012 ms |
6392 KB |
Output is correct |
12 |
Correct |
1310 ms |
6788 KB |
Output is correct |
13 |
Correct |
1326 ms |
7044 KB |
Output is correct |
14 |
Correct |
1121 ms |
6032 KB |
Output is correct |
15 |
Correct |
705 ms |
4636 KB |
Output is correct |
16 |
Correct |
1281 ms |
6056 KB |
Output is correct |
17 |
Correct |
1077 ms |
6200 KB |
Output is correct |
18 |
Correct |
36 ms |
3404 KB |
Output is correct |
19 |
Correct |
1225 ms |
6184 KB |
Output is correct |
20 |
Correct |
1022 ms |
5928 KB |
Output is correct |
21 |
Correct |
918 ms |
5804 KB |
Output is correct |
22 |
Correct |
776 ms |
5892 KB |
Output is correct |
23 |
Correct |
726 ms |
5708 KB |
Output is correct |
24 |
Correct |
808 ms |
5688 KB |
Output is correct |
25 |
Correct |
728 ms |
5592 KB |
Output is correct |
26 |
Correct |
1413 ms |
7044 KB |
Output is correct |
27 |
Correct |
1700 ms |
7204 KB |
Output is correct |
28 |
Correct |
1495 ms |
7332 KB |
Output is correct |
29 |
Correct |
1142 ms |
6840 KB |
Output is correct |
30 |
Correct |
1639 ms |
7336 KB |
Output is correct |
31 |
Correct |
1747 ms |
7112 KB |
Output is correct |
32 |
Correct |
1801 ms |
7148 KB |
Output is correct |
33 |
Correct |
1624 ms |
7088 KB |
Output is correct |
34 |
Correct |
1624 ms |
7072 KB |
Output is correct |
35 |
Correct |
1492 ms |
7204 KB |
Output is correct |
36 |
Correct |
1203 ms |
6912 KB |
Output is correct |
37 |
Correct |
1242 ms |
6820 KB |
Output is correct |
38 |
Correct |
1208 ms |
6988 KB |
Output is correct |
39 |
Correct |
1061 ms |
6776 KB |
Output is correct |
40 |
Correct |
1022 ms |
6752 KB |
Output is correct |
41 |
Correct |
1072 ms |
6684 KB |
Output is correct |
42 |
Correct |
999 ms |
6716 KB |
Output is correct |
43 |
Correct |
1020 ms |
6692 KB |
Output is correct |
44 |
Correct |
1004 ms |
6672 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
320 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
33 ms |
1152 KB |
Output is correct |
4 |
Correct |
5 ms |
596 KB |
Output is correct |
5 |
Correct |
26 ms |
1108 KB |
Output is correct |
6 |
Correct |
20 ms |
1160 KB |
Output is correct |
7 |
Correct |
25 ms |
1100 KB |
Output is correct |
8 |
Correct |
30 ms |
1104 KB |
Output is correct |
9 |
Correct |
28 ms |
1416 KB |
Output is correct |
10 |
Correct |
33 ms |
1132 KB |
Output is correct |
11 |
Correct |
31 ms |
1052 KB |
Output is correct |
12 |
Correct |
39 ms |
1288 KB |
Output is correct |
13 |
Correct |
39 ms |
1108 KB |
Output is correct |
14 |
Correct |
33 ms |
1108 KB |
Output is correct |
15 |
Correct |
37 ms |
1164 KB |
Output is correct |
16 |
Correct |
30 ms |
1224 KB |
Output is correct |
17 |
Correct |
31 ms |
1224 KB |
Output is correct |
18 |
Correct |
1494 ms |
7344 KB |
Output is correct |
19 |
Correct |
1476 ms |
7300 KB |
Output is correct |
20 |
Correct |
1454 ms |
7144 KB |
Output is correct |
21 |
Correct |
1536 ms |
7256 KB |
Output is correct |
22 |
Correct |
1503 ms |
7272 KB |
Output is correct |
23 |
Correct |
2017 ms |
7540 KB |
Output is correct |
24 |
Correct |
1997 ms |
7344 KB |
Output is correct |
25 |
Correct |
2033 ms |
7468 KB |
Output is correct |
26 |
Correct |
35 ms |
3396 KB |
Output is correct |
27 |
Correct |
1092 ms |
6108 KB |
Output is correct |
28 |
Correct |
1012 ms |
6392 KB |
Output is correct |
29 |
Correct |
1310 ms |
6788 KB |
Output is correct |
30 |
Correct |
1326 ms |
7044 KB |
Output is correct |
31 |
Correct |
1121 ms |
6032 KB |
Output is correct |
32 |
Correct |
705 ms |
4636 KB |
Output is correct |
33 |
Correct |
1281 ms |
6056 KB |
Output is correct |
34 |
Correct |
1077 ms |
6200 KB |
Output is correct |
35 |
Correct |
36 ms |
3404 KB |
Output is correct |
36 |
Correct |
1225 ms |
6184 KB |
Output is correct |
37 |
Correct |
1022 ms |
5928 KB |
Output is correct |
38 |
Correct |
918 ms |
5804 KB |
Output is correct |
39 |
Correct |
776 ms |
5892 KB |
Output is correct |
40 |
Correct |
726 ms |
5708 KB |
Output is correct |
41 |
Correct |
808 ms |
5688 KB |
Output is correct |
42 |
Correct |
728 ms |
5592 KB |
Output is correct |
43 |
Correct |
1993 ms |
8956 KB |
Output is correct |
44 |
Correct |
35 ms |
3408 KB |
Output is correct |
45 |
Correct |
187 ms |
4820 KB |
Output is correct |
46 |
Correct |
88 ms |
4924 KB |
Output is correct |
47 |
Correct |
984 ms |
7320 KB |
Output is correct |
48 |
Correct |
1838 ms |
8832 KB |
Output is correct |
49 |
Correct |
982 ms |
7188 KB |
Output is correct |
50 |
Correct |
941 ms |
6556 KB |
Output is correct |
51 |
Correct |
947 ms |
6864 KB |
Output is correct |
52 |
Correct |
950 ms |
6400 KB |
Output is correct |
53 |
Correct |
1407 ms |
7812 KB |
Output is correct |
54 |
Correct |
1403 ms |
7772 KB |
Output is correct |
55 |
Correct |
1423 ms |
7576 KB |
Output is correct |
56 |
Correct |
845 ms |
7292 KB |
Output is correct |
57 |
Correct |
905 ms |
7292 KB |
Output is correct |
58 |
Correct |
1864 ms |
9020 KB |
Output is correct |
59 |
Correct |
1895 ms |
8764 KB |
Output is correct |
60 |
Correct |
1843 ms |
8844 KB |
Output is correct |
61 |
Correct |
1856 ms |
8772 KB |
Output is correct |
62 |
Correct |
1581 ms |
7768 KB |
Output is correct |
63 |
Correct |
1584 ms |
7756 KB |
Output is correct |
64 |
Correct |
1775 ms |
8160 KB |
Output is correct |
65 |
Correct |
1042 ms |
6604 KB |
Output is correct |
66 |
Correct |
1413 ms |
7044 KB |
Output is correct |
67 |
Correct |
1700 ms |
7204 KB |
Output is correct |
68 |
Correct |
1495 ms |
7332 KB |
Output is correct |
69 |
Correct |
1142 ms |
6840 KB |
Output is correct |
70 |
Correct |
1639 ms |
7336 KB |
Output is correct |
71 |
Correct |
1747 ms |
7112 KB |
Output is correct |
72 |
Correct |
1801 ms |
7148 KB |
Output is correct |
73 |
Correct |
1624 ms |
7088 KB |
Output is correct |
74 |
Correct |
1624 ms |
7072 KB |
Output is correct |
75 |
Correct |
1492 ms |
7204 KB |
Output is correct |
76 |
Correct |
1203 ms |
6912 KB |
Output is correct |
77 |
Correct |
1242 ms |
6820 KB |
Output is correct |
78 |
Correct |
1208 ms |
6988 KB |
Output is correct |
79 |
Correct |
1061 ms |
6776 KB |
Output is correct |
80 |
Correct |
1022 ms |
6752 KB |
Output is correct |
81 |
Correct |
1072 ms |
6684 KB |
Output is correct |
82 |
Correct |
999 ms |
6716 KB |
Output is correct |
83 |
Correct |
1020 ms |
6692 KB |
Output is correct |
84 |
Correct |
1004 ms |
6672 KB |
Output is correct |
85 |
Correct |
2252 ms |
9256 KB |
Output is correct |
86 |
Correct |
212 ms |
5308 KB |
Output is correct |
87 |
Correct |
112 ms |
5780 KB |
Output is correct |
88 |
Correct |
1278 ms |
7792 KB |
Output is correct |
89 |
Correct |
2192 ms |
9264 KB |
Output is correct |
90 |
Correct |
1273 ms |
7776 KB |
Output is correct |
91 |
Correct |
1532 ms |
7088 KB |
Output is correct |
92 |
Correct |
1508 ms |
7344 KB |
Output is correct |
93 |
Correct |
2027 ms |
7572 KB |
Output is correct |
94 |
Correct |
1852 ms |
8100 KB |
Output is correct |
95 |
Correct |
1860 ms |
8192 KB |
Output is correct |
96 |
Correct |
2004 ms |
8540 KB |
Output is correct |
97 |
Correct |
1074 ms |
7504 KB |
Output is correct |
98 |
Correct |
1128 ms |
7388 KB |
Output is correct |
99 |
Correct |
2240 ms |
9316 KB |
Output is correct |
100 |
Correct |
2243 ms |
9388 KB |
Output is correct |
101 |
Correct |
2285 ms |
9356 KB |
Output is correct |
102 |
Correct |
2288 ms |
9328 KB |
Output is correct |
103 |
Correct |
2198 ms |
8736 KB |
Output is correct |
104 |
Correct |
2169 ms |
8720 KB |
Output is correct |
105 |
Correct |
1823 ms |
8568 KB |
Output is correct |
106 |
Correct |
1528 ms |
7856 KB |
Output is correct |
107 |
Correct |
1714 ms |
8644 KB |
Output is correct |
108 |
Correct |
2162 ms |
9576 KB |
Output is correct |
109 |
Correct |
1439 ms |
7288 KB |
Output is correct |