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Submission #927075

# Submission time Handle Problem Language Result Execution time Memory
927075 2024-02-14T08:33:18 Z hqminhuwu Bridges (APIO19_bridges) C++14
100 / 100
 2345 ms 145100 KB 
#include <bits/stdc++.h>
#define forr(_a,_b,_c) for(_a = (_b); _a <= (_c); ++_a)
#define ford(_a,_b,_c) for(_a = (_b) + 1; _a --> (_c);)
#define forf(_a,_b,_c) for(_a = (_b); _a < (_c); ++_a)
#define st first
#define nd second
#define ll long long
#define ull unsigned long long
#define pii pair <int,int>
#define pll pair <ll,ll>
#define piii pair <int,pii>
#define vi vector <int>
#define pb push_back
#define mp make_pair
#define all(x) begin(x),end(x)
#define file "test"


using namespace std;
const int N = 1e5 + 5;
const ll oo = 1e9;
const ll mod = 1e9 + 7;

int n, m, i, u, v, w, q, t[N], x[N], y[N], uwu = 600, par[N], sz[N], mk[N], ans[N], j;
piii edge[N];
vi uc, ask, upd, qq[N];
stack <int> s;

int get (int u){
	while (par[u] != u) u = par[u];
	return u;
}

void update (int u, int v){
	u = get(u);
	v = get(v);
	//cout << u << " " << v << "\n";
	if (u == v) return;
	if (sz[u] < sz[v]) swap(u, v);
	s.push(v);
	par[v] = u;
	sz[u] += sz[v];
}

void rollback (int pv){
	while (s.size() > pv){
		int u = s.top();
		s.pop();
		sz[par[u]] -= sz[u];
		par[u] = u;
	}
}

void rs (){
	ask.clear();
	upd.clear();
	uc.clear();
	memset(mk, 0, sizeof mk);
	for (int h = 1; h <= n; h++)
		par[h] = h, sz[h] = 1;
}

int main(){
	ios_base::sync_with_stdio(0); cin.tie(0);
	#ifdef hqm
	   freopen(file".inp", "r", stdin); freopen(file".out", "w", stdout);
	#endif

	cin >> n >> m;
	forr (i, 1, m){
		cin >> u >> v >> w;
		edge[i] = {w, {u, v}};
	}

	cin >> q;

	forr (i, 1, q)
		cin >> t[i] >> x[i] >> y[i];
	
	for (int i = 1; i <= q; i += uwu){
		int lmt = min (i + uwu - 1, q);
		rs();

		forr (j, i, lmt)
		if (t[j] == 1)
			upd.pb(j);
		
		forr (j, i, lmt)
		if (t[j] == 1)
			mk[x[j]] = 1, edge[x[j]].st = y[j];
		else {
			ask.pb(j);
			for (int v : upd)
				if (edge[x[v]].st >= y[j]) qq[j].pb(v);
		}

		forr (j, 1, m){
			if (mk[j]) continue;
			uc.pb(j);
		}

		sort(all(ask), [&](int u, int v) {return y[u] > y[v]; });
		sort(all(uc), [&](int u, int v) {return edge[u].st > edge[v].st; });

		int it = 0;
		for (int u : ask){
			while (it < uc.size() && edge[uc[it]].st >= y[u])
				update (edge[uc[it]].nd.st, edge[uc[it]].nd.nd), it++;
			int prev = s.size();
			for (int v : qq[u]){
					update(edge[x[v]].nd.st, edge[x[v]].nd.nd);
			}
			ans[u] = sz[get(x[u])];
			rollback(prev);
		}
	}

	forr (i, 1, q)
	if (t[i] - 1)
		cout << ans[i] << "\n";

	return 0;
}
/*



*/

Compilation message

bridges.cpp: In function 'void rollback(int)':
bridges.cpp:46:18: warning: comparison of integer expressions of different signedness: 'std::stack<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   46 |  while (s.size() > pv){
      |         ~~~~~~~~~^~~~
bridges.cpp: In function 'int main()':
bridges.cpp:107:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  107 |    while (it < uc.size() && edge[uc[it]].st >= y[u])
      |           ~~~^~~~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4696 KB Output is correct
2 Correct 1 ms 4700 KB Output is correct
3 Correct 20 ms 8956 KB Output is correct
4 Correct 3 ms 4700 KB Output is correct
5 Correct 21 ms 10188 KB Output is correct
6 Correct 15 ms 10332 KB Output is correct
7 Correct 17 ms 10536 KB Output is correct
8 Correct 21 ms 8796 KB Output is correct
9 Correct 22 ms 14680 KB Output is correct
10 Correct 21 ms 9384 KB Output is correct
11 Correct 22 ms 9044 KB Output is correct
12 Correct 27 ms 10768 KB Output is correct
13 Correct 24 ms 9712 KB Output is correct
14 Correct 23 ms 8796 KB Output is correct
15 Correct 26 ms 9300 KB Output is correct
16 Correct 23 ms 12120 KB Output is correct
17 Correct 20 ms 10844 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1141 ms 84296 KB Output is correct
2 Correct 1156 ms 84144 KB Output is correct
3 Correct 1155 ms 84284 KB Output is correct
4 Correct 1191 ms 83904 KB Output is correct
5 Correct 1166 ms 84184 KB Output is correct
6 Correct 1269 ms 141348 KB Output is correct
7 Correct 1271 ms 142128 KB Output is correct
8 Correct 1486 ms 141532 KB Output is correct
9 Correct 27 ms 5980 KB Output is correct
10 Correct 604 ms 116220 KB Output is correct
11 Correct 608 ms 100060 KB Output is correct
12 Correct 1042 ms 71372 KB Output is correct
13 Correct 1022 ms 80348 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 777 ms 72492 KB Output is correct
2 Correct 390 ms 83796 KB Output is correct
3 Correct 808 ms 101236 KB Output is correct
4 Correct 766 ms 71912 KB Output is correct
5 Correct 26 ms 5980 KB Output is correct
6 Correct 804 ms 85636 KB Output is correct
7 Correct 741 ms 66556 KB Output is correct
8 Correct 705 ms 56044 KB Output is correct
9 Correct 651 ms 49260 KB Output is correct
10 Correct 642 ms 42776 KB Output is correct
11 Correct 648 ms 47400 KB Output is correct
12 Correct 622 ms 40728 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2039 ms 40864 KB Output is correct
2 Correct 27 ms 7256 KB Output is correct
3 Correct 209 ms 7384 KB Output is correct
4 Correct 87 ms 7416 KB Output is correct
5 Correct 1016 ms 43280 KB Output is correct
6 Correct 2001 ms 44604 KB Output is correct
7 Correct 1020 ms 42876 KB Output is correct
8 Correct 945 ms 43516 KB Output is correct
9 Correct 924 ms 43932 KB Output is correct
10 Correct 938 ms 43428 KB Output is correct
11 Correct 1516 ms 44444 KB Output is correct
12 Correct 1509 ms 44564 KB Output is correct
13 Correct 1522 ms 44484 KB Output is correct
14 Correct 920 ms 43104 KB Output is correct
15 Correct 973 ms 43040 KB Output is correct
16 Correct 2055 ms 44940 KB Output is correct
17 Correct 2088 ms 45060 KB Output is correct
18 Correct 2054 ms 44956 KB Output is correct
19 Correct 2057 ms 45308 KB Output is correct
20 Correct 1725 ms 44604 KB Output is correct
21 Correct 1724 ms 44324 KB Output is correct
22 Correct 1980 ms 44048 KB Output is correct
23 Correct 1139 ms 39672 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1141 ms 84296 KB Output is correct
2 Correct 1156 ms 84144 KB Output is correct
3 Correct 1155 ms 84284 KB Output is correct
4 Correct 1191 ms 83904 KB Output is correct
5 Correct 1166 ms 84184 KB Output is correct
6 Correct 1269 ms 141348 KB Output is correct
7 Correct 1271 ms 142128 KB Output is correct
8 Correct 1486 ms 141532 KB Output is correct
9 Correct 27 ms 5980 KB Output is correct
10 Correct 604 ms 116220 KB Output is correct
11 Correct 608 ms 100060 KB Output is correct
12 Correct 1042 ms 71372 KB Output is correct
13 Correct 1022 ms 80348 KB Output is correct
14 Correct 777 ms 72492 KB Output is correct
15 Correct 390 ms 83796 KB Output is correct
16 Correct 808 ms 101236 KB Output is correct
17 Correct 766 ms 71912 KB Output is correct
18 Correct 26 ms 5980 KB Output is correct
19 Correct 804 ms 85636 KB Output is correct
20 Correct 741 ms 66556 KB Output is correct
21 Correct 705 ms 56044 KB Output is correct
22 Correct 651 ms 49260 KB Output is correct
23 Correct 642 ms 42776 KB Output is correct
24 Correct 648 ms 47400 KB Output is correct
25 Correct 622 ms 40728 KB Output is correct
26 Correct 1122 ms 84188 KB Output is correct
27 Correct 1247 ms 113500 KB Output is correct
28 Correct 1184 ms 83420 KB Output is correct
29 Correct 1052 ms 55192 KB Output is correct
30 Correct 1215 ms 99336 KB Output is correct
31 Correct 1222 ms 102116 KB Output is correct
32 Correct 1221 ms 102716 KB Output is correct
33 Correct 1174 ms 82456 KB Output is correct
34 Correct 1167 ms 82916 KB Output is correct
35 Correct 1187 ms 83224 KB Output is correct
36 Correct 1054 ms 59060 KB Output is correct
37 Correct 1055 ms 58488 KB Output is correct
38 Correct 1056 ms 57356 KB Output is correct
39 Correct 989 ms 48168 KB Output is correct
40 Correct 982 ms 47768 KB Output is correct
41 Correct 987 ms 47360 KB Output is correct
42 Correct 952 ms 45008 KB Output is correct
43 Correct 952 ms 44832 KB Output is correct
44 Correct 947 ms 44268 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4696 KB Output is correct
2 Correct 1 ms 4700 KB Output is correct
3 Correct 20 ms 8956 KB Output is correct
4 Correct 3 ms 4700 KB Output is correct
5 Correct 21 ms 10188 KB Output is correct
6 Correct 15 ms 10332 KB Output is correct
7 Correct 17 ms 10536 KB Output is correct
8 Correct 21 ms 8796 KB Output is correct
9 Correct 22 ms 14680 KB Output is correct
10 Correct 21 ms 9384 KB Output is correct
11 Correct 22 ms 9044 KB Output is correct
12 Correct 27 ms 10768 KB Output is correct
13 Correct 24 ms 9712 KB Output is correct
14 Correct 23 ms 8796 KB Output is correct
15 Correct 26 ms 9300 KB Output is correct
16 Correct 23 ms 12120 KB Output is correct
17 Correct 20 ms 10844 KB Output is correct
18 Correct 1141 ms 84296 KB Output is correct
19 Correct 1156 ms 84144 KB Output is correct
20 Correct 1155 ms 84284 KB Output is correct
21 Correct 1191 ms 83904 KB Output is correct
22 Correct 1166 ms 84184 KB Output is correct
23 Correct 1269 ms 141348 KB Output is correct
24 Correct 1271 ms 142128 KB Output is correct
25 Correct 1486 ms 141532 KB Output is correct
26 Correct 27 ms 5980 KB Output is correct
27 Correct 604 ms 116220 KB Output is correct
28 Correct 608 ms 100060 KB Output is correct
29 Correct 1042 ms 71372 KB Output is correct
30 Correct 1022 ms 80348 KB Output is correct
31 Correct 777 ms 72492 KB Output is correct
32 Correct 390 ms 83796 KB Output is correct
33 Correct 808 ms 101236 KB Output is correct
34 Correct 766 ms 71912 KB Output is correct
35 Correct 26 ms 5980 KB Output is correct
36 Correct 804 ms 85636 KB Output is correct
37 Correct 741 ms 66556 KB Output is correct
38 Correct 705 ms 56044 KB Output is correct
39 Correct 651 ms 49260 KB Output is correct
40 Correct 642 ms 42776 KB Output is correct
41 Correct 648 ms 47400 KB Output is correct
42 Correct 622 ms 40728 KB Output is correct
43 Correct 2039 ms 40864 KB Output is correct
44 Correct 27 ms 7256 KB Output is correct
45 Correct 209 ms 7384 KB Output is correct
46 Correct 87 ms 7416 KB Output is correct
47 Correct 1016 ms 43280 KB Output is correct
48 Correct 2001 ms 44604 KB Output is correct
49 Correct 1020 ms 42876 KB Output is correct
50 Correct 945 ms 43516 KB Output is correct
51 Correct 924 ms 43932 KB Output is correct
52 Correct 938 ms 43428 KB Output is correct
53 Correct 1516 ms 44444 KB Output is correct
54 Correct 1509 ms 44564 KB Output is correct
55 Correct 1522 ms 44484 KB Output is correct
56 Correct 920 ms 43104 KB Output is correct
57 Correct 973 ms 43040 KB Output is correct
58 Correct 2055 ms 44940 KB Output is correct
59 Correct 2088 ms 45060 KB Output is correct
60 Correct 2054 ms 44956 KB Output is correct
61 Correct 2057 ms 45308 KB Output is correct
62 Correct 1725 ms 44604 KB Output is correct
63 Correct 1724 ms 44324 KB Output is correct
64 Correct 1980 ms 44048 KB Output is correct
65 Correct 1139 ms 39672 KB Output is correct
66 Correct 1122 ms 84188 KB Output is correct
67 Correct 1247 ms 113500 KB Output is correct
68 Correct 1184 ms 83420 KB Output is correct
69 Correct 1052 ms 55192 KB Output is correct
70 Correct 1215 ms 99336 KB Output is correct
71 Correct 1222 ms 102116 KB Output is correct
72 Correct 1221 ms 102716 KB Output is correct
73 Correct 1174 ms 82456 KB Output is correct
74 Correct 1167 ms 82916 KB Output is correct
75 Correct 1187 ms 83224 KB Output is correct
76 Correct 1054 ms 59060 KB Output is correct
77 Correct 1055 ms 58488 KB Output is correct
78 Correct 1056 ms 57356 KB Output is correct
79 Correct 989 ms 48168 KB Output is correct
80 Correct 982 ms 47768 KB Output is correct
81 Correct 987 ms 47360 KB Output is correct
82 Correct 952 ms 45008 KB Output is correct
83 Correct 952 ms 44832 KB Output is correct
84 Correct 947 ms 44268 KB Output is correct
85 Correct 2232 ms 88428 KB Output is correct
86 Correct 225 ms 11472 KB Output is correct
87 Correct 105 ms 17184 KB Output is correct
88 Correct 1192 ms 99288 KB Output is correct
89 Correct 2232 ms 87152 KB Output is correct
90 Correct 1238 ms 99976 KB Output is correct
91 Correct 1178 ms 87004 KB Output is correct
92 Correct 1182 ms 86748 KB Output is correct
93 Correct 1308 ms 144172 KB Output is correct
94 Correct 1760 ms 88004 KB Output is correct
95 Correct 1746 ms 87996 KB Output is correct
96 Correct 1761 ms 144532 KB Output is correct
97 Correct 1121 ms 63560 KB Output is correct
98 Correct 1097 ms 65512 KB Output is correct
99 Correct 2263 ms 89496 KB Output is correct
100 Correct 2293 ms 88308 KB Output is correct
101 Correct 2345 ms 88404 KB Output is correct
102 Correct 2299 ms 88252 KB Output is correct
103 Correct 2001 ms 145100 KB Output is correct
104 Correct 1982 ms 145100 KB Output is correct
105 Correct 1824 ms 84628 KB Output is correct
106 Correct 1567 ms 64280 KB Output is correct
107 Correct 1804 ms 73024 KB Output is correct
108 Correct 2174 ms 115752 KB Output is correct
109 Correct 1321 ms 137612 KB Output is correct