# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
683490 |
2023-01-18T14:57:19 Z |
Nursik |
Bridges (APIO19_bridges) |
C++14 |
|
2013 ms |
12328 KB |
#include <stdio.h>
#include <algorithm>
#include <bitset>
#include <cassert>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque>
#include <fstream>
#include <functional>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
using namespace std;
#define ll long long
#define pb push_back
#define mp make_pair
#define f first
#define s second
#define ld long double
#define bug cout << "bug\n";
const int maxn = 1e5 + 1, maxm = 5e4 + 1;
const int mod = 1e9 + 7, inf = 1e9, block = 800, hb = 126067, base = 1000050017;
const ll biginf = 5e18;
const ld eps = 1e-15;
using namespace std;
int n, m, q;
int u[maxn], v[maxn], d[maxn], used[maxn], ans[maxn];
int t[maxn];
int x[maxn], y[maxn];
vector<int> add[block + block];
struct dsu{
int p[maxm], sz[maxm];
stack<pair<int, int>> st;
void init(){
for (int i = 1; i <= n; ++i){
p[i] = i, sz[i] = 1;
}
while (st.size() > 0){
st.pop();
}
}
int get(int v){
if (v == p[v])
return v;
return get(p[v]);
}
void unite(int a, int b){
a = get(a), b = get(b);
if (a == b)
return;
if (sz[a] > sz[b])
swap(a, b);
p[a] = b;
sz[b] += sz[a];
st.push(mp(a, sz[a]));
}
void rollback(int y){
while (st.size() != y){
pair<int, int> cur = st.top();
int r = p[cur.f];
sz[r] -= cur.s;
p[cur.f] = cur.f;
st.pop();
}
}
} rt;
int main(){
ios_base::sync_with_stdio(false);
cin.tie(0), cout.tie(0);
cin >> n >> m;
for (int i = 1; i <= m; ++i){
cin >> u[i] >> v[i] >> d[i];
}
cin >> q;
for (int i = 1; i <= q; ++i){
cin >> t[i];
if (t[i] == 1){
cin >> x[i] >> y[i];
}
else{
cin >> x[i] >> y[i];
}
}
for (int i = 1; i <= q; i += block){
rt.init();
int l = i, r = min(q, i + block - 1);
vector<int> changed;
vector<pair<int, int>> unchanged;
vector<pair<int, int>> ask;
for (int j = l; j <= r; ++j){
if (t[j] == 1){
used[x[j]] = 1;
changed.pb(x[j]);
}
else{
ask.pb(mp(y[j], j));
}
}
for (int j = l; j <= r; ++j){
if (t[j] == 1){
d[x[j]] = y[j];
}
else{
add[j - l].clear();
for (auto it : changed){
if (d[it] >= y[j]){
add[j - l].pb(it);
}
}
}
}
for (int j = 1; j <= m; ++j){
if (used[j] == 0){
unchanged.pb(mp(d[j], j));
}
used[j] = 0;
}
sort(ask.begin(), ask.end());
sort(unchanged.begin(), unchanged.end());
int uk = (int)unchanged.size() - 1;
for (int j = (int)ask.size() - 1; j >= 0; --j){
while (uk >= 0 && unchanged[uk].f >= ask[j].f){
int z = unchanged[uk].s;
rt.unite(u[z], v[z]);
uk -= 1;
}
int cur = (int)rt.st.size();
int pos = ask[j].s;
for (auto it : add[pos - l]){
rt.unite(u[it], v[it]);
}
ans[pos] = rt.sz[rt.get(x[pos])];
rt.rollback(cur);
}
}
for (int i = 1; i <= q; ++i){
if (t[i] == 2){
cout << ans[i] << '\n';
}
}
}
/*
*/
Compilation message
bridges.cpp: In member function 'void dsu::rollback(int)':
bridges.cpp:76:26: warning: comparison of integer expressions of different signedness: 'std::stack<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
76 | while (st.size() != y){
| ~~~~~~~~~~^~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
23 ms |
2228 KB |
Output is correct |
4 |
Correct |
4 ms |
724 KB |
Output is correct |
5 |
Correct |
22 ms |
2292 KB |
Output is correct |
6 |
Correct |
16 ms |
2240 KB |
Output is correct |
7 |
Correct |
21 ms |
2356 KB |
Output is correct |
8 |
Correct |
27 ms |
2372 KB |
Output is correct |
9 |
Correct |
24 ms |
2252 KB |
Output is correct |
10 |
Correct |
26 ms |
2384 KB |
Output is correct |
11 |
Correct |
27 ms |
2308 KB |
Output is correct |
12 |
Correct |
36 ms |
2300 KB |
Output is correct |
13 |
Correct |
30 ms |
2428 KB |
Output is correct |
14 |
Correct |
28 ms |
2380 KB |
Output is correct |
15 |
Correct |
30 ms |
2384 KB |
Output is correct |
16 |
Correct |
23 ms |
2260 KB |
Output is correct |
17 |
Correct |
25 ms |
2280 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1269 ms |
6064 KB |
Output is correct |
2 |
Correct |
1247 ms |
8796 KB |
Output is correct |
3 |
Correct |
1243 ms |
8824 KB |
Output is correct |
4 |
Correct |
1298 ms |
8796 KB |
Output is correct |
5 |
Correct |
1283 ms |
8864 KB |
Output is correct |
6 |
Correct |
1708 ms |
8724 KB |
Output is correct |
7 |
Correct |
1701 ms |
8592 KB |
Output is correct |
8 |
Correct |
1727 ms |
8492 KB |
Output is correct |
9 |
Correct |
32 ms |
3404 KB |
Output is correct |
10 |
Correct |
1176 ms |
8064 KB |
Output is correct |
11 |
Correct |
1152 ms |
7640 KB |
Output is correct |
12 |
Correct |
1107 ms |
7560 KB |
Output is correct |
13 |
Correct |
1124 ms |
10152 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
959 ms |
5168 KB |
Output is correct |
2 |
Correct |
606 ms |
5632 KB |
Output is correct |
3 |
Correct |
1094 ms |
7308 KB |
Output is correct |
4 |
Correct |
949 ms |
7564 KB |
Output is correct |
5 |
Correct |
33 ms |
3464 KB |
Output is correct |
6 |
Correct |
1066 ms |
7468 KB |
Output is correct |
7 |
Correct |
869 ms |
7404 KB |
Output is correct |
8 |
Correct |
805 ms |
7708 KB |
Output is correct |
9 |
Correct |
670 ms |
6368 KB |
Output is correct |
10 |
Correct |
611 ms |
6432 KB |
Output is correct |
11 |
Correct |
712 ms |
9108 KB |
Output is correct |
12 |
Correct |
634 ms |
8940 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1643 ms |
6380 KB |
Output is correct |
2 |
Correct |
31 ms |
2020 KB |
Output is correct |
3 |
Correct |
172 ms |
3904 KB |
Output is correct |
4 |
Correct |
154 ms |
3904 KB |
Output is correct |
5 |
Correct |
1565 ms |
6564 KB |
Output is correct |
6 |
Correct |
1607 ms |
6356 KB |
Output is correct |
7 |
Correct |
1574 ms |
6452 KB |
Output is correct |
8 |
Correct |
823 ms |
4316 KB |
Output is correct |
9 |
Correct |
841 ms |
4288 KB |
Output is correct |
10 |
Correct |
839 ms |
4456 KB |
Output is correct |
11 |
Correct |
1248 ms |
5572 KB |
Output is correct |
12 |
Correct |
1261 ms |
5640 KB |
Output is correct |
13 |
Correct |
1314 ms |
5984 KB |
Output is correct |
14 |
Correct |
1398 ms |
6704 KB |
Output is correct |
15 |
Correct |
1557 ms |
6456 KB |
Output is correct |
16 |
Correct |
1658 ms |
6380 KB |
Output is correct |
17 |
Correct |
1657 ms |
6404 KB |
Output is correct |
18 |
Correct |
1653 ms |
6340 KB |
Output is correct |
19 |
Correct |
1615 ms |
6324 KB |
Output is correct |
20 |
Correct |
1383 ms |
6228 KB |
Output is correct |
21 |
Correct |
1394 ms |
6184 KB |
Output is correct |
22 |
Correct |
1580 ms |
6348 KB |
Output is correct |
23 |
Correct |
1503 ms |
6104 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1269 ms |
6064 KB |
Output is correct |
2 |
Correct |
1247 ms |
8796 KB |
Output is correct |
3 |
Correct |
1243 ms |
8824 KB |
Output is correct |
4 |
Correct |
1298 ms |
8796 KB |
Output is correct |
5 |
Correct |
1283 ms |
8864 KB |
Output is correct |
6 |
Correct |
1708 ms |
8724 KB |
Output is correct |
7 |
Correct |
1701 ms |
8592 KB |
Output is correct |
8 |
Correct |
1727 ms |
8492 KB |
Output is correct |
9 |
Correct |
32 ms |
3404 KB |
Output is correct |
10 |
Correct |
1176 ms |
8064 KB |
Output is correct |
11 |
Correct |
1152 ms |
7640 KB |
Output is correct |
12 |
Correct |
1107 ms |
7560 KB |
Output is correct |
13 |
Correct |
1124 ms |
10152 KB |
Output is correct |
14 |
Correct |
959 ms |
5168 KB |
Output is correct |
15 |
Correct |
606 ms |
5632 KB |
Output is correct |
16 |
Correct |
1094 ms |
7308 KB |
Output is correct |
17 |
Correct |
949 ms |
7564 KB |
Output is correct |
18 |
Correct |
33 ms |
3464 KB |
Output is correct |
19 |
Correct |
1066 ms |
7468 KB |
Output is correct |
20 |
Correct |
869 ms |
7404 KB |
Output is correct |
21 |
Correct |
805 ms |
7708 KB |
Output is correct |
22 |
Correct |
670 ms |
6368 KB |
Output is correct |
23 |
Correct |
611 ms |
6432 KB |
Output is correct |
24 |
Correct |
712 ms |
9108 KB |
Output is correct |
25 |
Correct |
634 ms |
8940 KB |
Output is correct |
26 |
Correct |
1334 ms |
8916 KB |
Output is correct |
27 |
Correct |
1522 ms |
8484 KB |
Output is correct |
28 |
Correct |
1339 ms |
8952 KB |
Output is correct |
29 |
Correct |
1004 ms |
9116 KB |
Output is correct |
30 |
Correct |
1462 ms |
8740 KB |
Output is correct |
31 |
Correct |
1533 ms |
8700 KB |
Output is correct |
32 |
Correct |
1506 ms |
8944 KB |
Output is correct |
33 |
Correct |
1299 ms |
9012 KB |
Output is correct |
34 |
Correct |
1288 ms |
8872 KB |
Output is correct |
35 |
Correct |
1321 ms |
8860 KB |
Output is correct |
36 |
Correct |
1038 ms |
9132 KB |
Output is correct |
37 |
Correct |
1050 ms |
9096 KB |
Output is correct |
38 |
Correct |
1039 ms |
9112 KB |
Output is correct |
39 |
Correct |
931 ms |
7716 KB |
Output is correct |
40 |
Correct |
932 ms |
7812 KB |
Output is correct |
41 |
Correct |
907 ms |
7752 KB |
Output is correct |
42 |
Correct |
888 ms |
9920 KB |
Output is correct |
43 |
Correct |
891 ms |
9684 KB |
Output is correct |
44 |
Correct |
854 ms |
9808 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
23 ms |
2228 KB |
Output is correct |
4 |
Correct |
4 ms |
724 KB |
Output is correct |
5 |
Correct |
22 ms |
2292 KB |
Output is correct |
6 |
Correct |
16 ms |
2240 KB |
Output is correct |
7 |
Correct |
21 ms |
2356 KB |
Output is correct |
8 |
Correct |
27 ms |
2372 KB |
Output is correct |
9 |
Correct |
24 ms |
2252 KB |
Output is correct |
10 |
Correct |
26 ms |
2384 KB |
Output is correct |
11 |
Correct |
27 ms |
2308 KB |
Output is correct |
12 |
Correct |
36 ms |
2300 KB |
Output is correct |
13 |
Correct |
30 ms |
2428 KB |
Output is correct |
14 |
Correct |
28 ms |
2380 KB |
Output is correct |
15 |
Correct |
30 ms |
2384 KB |
Output is correct |
16 |
Correct |
23 ms |
2260 KB |
Output is correct |
17 |
Correct |
25 ms |
2280 KB |
Output is correct |
18 |
Correct |
1269 ms |
6064 KB |
Output is correct |
19 |
Correct |
1247 ms |
8796 KB |
Output is correct |
20 |
Correct |
1243 ms |
8824 KB |
Output is correct |
21 |
Correct |
1298 ms |
8796 KB |
Output is correct |
22 |
Correct |
1283 ms |
8864 KB |
Output is correct |
23 |
Correct |
1708 ms |
8724 KB |
Output is correct |
24 |
Correct |
1701 ms |
8592 KB |
Output is correct |
25 |
Correct |
1727 ms |
8492 KB |
Output is correct |
26 |
Correct |
32 ms |
3404 KB |
Output is correct |
27 |
Correct |
1176 ms |
8064 KB |
Output is correct |
28 |
Correct |
1152 ms |
7640 KB |
Output is correct |
29 |
Correct |
1107 ms |
7560 KB |
Output is correct |
30 |
Correct |
1124 ms |
10152 KB |
Output is correct |
31 |
Correct |
959 ms |
5168 KB |
Output is correct |
32 |
Correct |
606 ms |
5632 KB |
Output is correct |
33 |
Correct |
1094 ms |
7308 KB |
Output is correct |
34 |
Correct |
949 ms |
7564 KB |
Output is correct |
35 |
Correct |
33 ms |
3464 KB |
Output is correct |
36 |
Correct |
1066 ms |
7468 KB |
Output is correct |
37 |
Correct |
869 ms |
7404 KB |
Output is correct |
38 |
Correct |
805 ms |
7708 KB |
Output is correct |
39 |
Correct |
670 ms |
6368 KB |
Output is correct |
40 |
Correct |
611 ms |
6432 KB |
Output is correct |
41 |
Correct |
712 ms |
9108 KB |
Output is correct |
42 |
Correct |
634 ms |
8940 KB |
Output is correct |
43 |
Correct |
1643 ms |
6380 KB |
Output is correct |
44 |
Correct |
31 ms |
2020 KB |
Output is correct |
45 |
Correct |
172 ms |
3904 KB |
Output is correct |
46 |
Correct |
154 ms |
3904 KB |
Output is correct |
47 |
Correct |
1565 ms |
6564 KB |
Output is correct |
48 |
Correct |
1607 ms |
6356 KB |
Output is correct |
49 |
Correct |
1574 ms |
6452 KB |
Output is correct |
50 |
Correct |
823 ms |
4316 KB |
Output is correct |
51 |
Correct |
841 ms |
4288 KB |
Output is correct |
52 |
Correct |
839 ms |
4456 KB |
Output is correct |
53 |
Correct |
1248 ms |
5572 KB |
Output is correct |
54 |
Correct |
1261 ms |
5640 KB |
Output is correct |
55 |
Correct |
1314 ms |
5984 KB |
Output is correct |
56 |
Correct |
1398 ms |
6704 KB |
Output is correct |
57 |
Correct |
1557 ms |
6456 KB |
Output is correct |
58 |
Correct |
1658 ms |
6380 KB |
Output is correct |
59 |
Correct |
1657 ms |
6404 KB |
Output is correct |
60 |
Correct |
1653 ms |
6340 KB |
Output is correct |
61 |
Correct |
1615 ms |
6324 KB |
Output is correct |
62 |
Correct |
1383 ms |
6228 KB |
Output is correct |
63 |
Correct |
1394 ms |
6184 KB |
Output is correct |
64 |
Correct |
1580 ms |
6348 KB |
Output is correct |
65 |
Correct |
1503 ms |
6104 KB |
Output is correct |
66 |
Correct |
1334 ms |
8916 KB |
Output is correct |
67 |
Correct |
1522 ms |
8484 KB |
Output is correct |
68 |
Correct |
1339 ms |
8952 KB |
Output is correct |
69 |
Correct |
1004 ms |
9116 KB |
Output is correct |
70 |
Correct |
1462 ms |
8740 KB |
Output is correct |
71 |
Correct |
1533 ms |
8700 KB |
Output is correct |
72 |
Correct |
1506 ms |
8944 KB |
Output is correct |
73 |
Correct |
1299 ms |
9012 KB |
Output is correct |
74 |
Correct |
1288 ms |
8872 KB |
Output is correct |
75 |
Correct |
1321 ms |
8860 KB |
Output is correct |
76 |
Correct |
1038 ms |
9132 KB |
Output is correct |
77 |
Correct |
1050 ms |
9096 KB |
Output is correct |
78 |
Correct |
1039 ms |
9112 KB |
Output is correct |
79 |
Correct |
931 ms |
7716 KB |
Output is correct |
80 |
Correct |
932 ms |
7812 KB |
Output is correct |
81 |
Correct |
907 ms |
7752 KB |
Output is correct |
82 |
Correct |
888 ms |
9920 KB |
Output is correct |
83 |
Correct |
891 ms |
9684 KB |
Output is correct |
84 |
Correct |
854 ms |
9808 KB |
Output is correct |
85 |
Correct |
1877 ms |
11580 KB |
Output is correct |
86 |
Correct |
190 ms |
7436 KB |
Output is correct |
87 |
Correct |
173 ms |
7564 KB |
Output is correct |
88 |
Correct |
1833 ms |
10312 KB |
Output is correct |
89 |
Correct |
1866 ms |
11920 KB |
Output is correct |
90 |
Correct |
1840 ms |
10676 KB |
Output is correct |
91 |
Correct |
1312 ms |
8696 KB |
Output is correct |
92 |
Correct |
1335 ms |
8772 KB |
Output is correct |
93 |
Correct |
1803 ms |
8588 KB |
Output is correct |
94 |
Correct |
1579 ms |
10688 KB |
Output is correct |
95 |
Correct |
1597 ms |
10708 KB |
Output is correct |
96 |
Correct |
1698 ms |
10404 KB |
Output is correct |
97 |
Correct |
1653 ms |
11540 KB |
Output is correct |
98 |
Correct |
1666 ms |
11760 KB |
Output is correct |
99 |
Correct |
1933 ms |
12024 KB |
Output is correct |
100 |
Correct |
1884 ms |
11744 KB |
Output is correct |
101 |
Correct |
2013 ms |
11796 KB |
Output is correct |
102 |
Correct |
1956 ms |
11996 KB |
Output is correct |
103 |
Correct |
1864 ms |
10788 KB |
Output is correct |
104 |
Correct |
1876 ms |
10772 KB |
Output is correct |
105 |
Correct |
1539 ms |
12328 KB |
Output is correct |
106 |
Correct |
1298 ms |
12276 KB |
Output is correct |
107 |
Correct |
1447 ms |
10040 KB |
Output is correct |
108 |
Correct |
1822 ms |
11388 KB |
Output is correct |
109 |
Correct |
1722 ms |
9484 KB |
Output is correct |