oj.uz

Submission #834196

# Submission time Handle Problem Language Result Execution time Memory
834196 2023-08-22T11:45:59 Z Antekb Bridges (APIO19_bridges) C++17
100 / 100
 2619 ms 13700 KB 
#include<bits/stdc++.h>
#define st first
#define nd second
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define eb emplace_back
#define pp pop_back
#define mp make_pair
using namespace std;
using pii = pair<int, int>;
using ll = long long;
using vi = vector<int>;
using vii = vector<pii>;
void debug(){cerr<<"\n";}
template<typename H, typename... T>
void debug(H h, T... t){
	cerr<<h;
	if(sizeof...(t)){
		cerr<<", ";
	}
	debug(t...);
}
#define deb(x...) cerr<<#x<<" = ";debug(x);

mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
const int N=1e5+5;
vii edg;
vii E[N];
int wei[N];
int ans[N];
int spec[N], wei2[N];
int r[N], siz[N], vis[N];
int find(int v){
	if(r[v]==v)return v;
	return r[v]=find(r[v]);
}
void Union(int a, int b){
	a=find(a);
	b=find(b);
	if(a==b)return;
	if(siz[a]<siz[b])swap(a, b);
	r[b]=a;
	siz[a]+=siz[b];
}
int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int n, m;
	cin>>n>>m;
	for(int i=0; i<m; i++){
		int u, v, w;
		cin>>u>>v>>w;
		wei[i]=w;
		edg.eb(u, v);
	}
	int q;
	cin>>q;
	int K=500;
	vector<pair<pii, int> > Q, U;
	for(int qq=0; qq<q; qq++){
		int qt, qa, qb;
		cin>>qt>>qa>>qb;
		if(qt==1)U.eb(mp(qb, qa-1), qq);
		else Q.eb(mp(qb, qa), qq);
		if(qq==q-1 || Q.size()+U.size()==K){
			vi waz, waz2;
			for(auto i:U){
				waz.pb(i.st.nd);
				waz2.pb(edg[i.st.nd].st);
				waz2.pb(edg[i.st.nd].nd);
				spec[i.st.nd]=1;
				wei2[i.st.nd]=wei[i.st.nd];
			}
			sort(all(waz));
			waz.resize(unique(all(waz))-waz.begin());
			sort(all(waz2));
			waz2.resize(unique(all(waz2))-waz2.begin());
			vector<pair<int, pii> > edg2;
			for(int i=0; i<m ;i++){
				if(!spec[i])edg2.eb(wei[i], edg[i]);
			}
			for(int i=1; i<=n; i++)r[i]=i, siz[i]=1;
			sort(all(edg2));
			reverse(all(edg2));
			sort(all(Q));
			reverse(all(Q));
			int wsk=0;
			for(int j=0; j<Q.size(); j++){
				while(wsk<edg2.size() && edg2[wsk].st>=Q[j].st.st){
					Union(edg2[wsk].nd.st, edg2[wsk].nd.nd);
					wsk++;
				}
				int t=Q[j].nd;
				for(auto i:U){
					if(i.nd>t)break;
					wei2[i.st.nd]=i.st.st;
				}
				for(int i:waz){
					E[find(edg[i].st)].eb(find(edg[i].nd), i);
					E[find(edg[i].nd)].eb(find(edg[i].st), i);
				}
				//deb(Q[j].st.nd, Q[j].st.nd, Q[j].nd);
				//for(int i=0; i<m; i++){deb(find(edg[i].st), find(edg[i].nd), spec[i], wei[i], wei2[i]);}
				vi V;
				int s=0;
				V.pb(find(Q[j].st.nd));
				vis[V[0]]=1;
				for(int i=0; i<V.size(); i++){
					int v=V[i];
					//deb(v, siz[v]);
					s+=siz[v];
					for(auto e:E[v]){
						int u=e.st;
						//deb(v, u, e.nd);
						if(wei2[e.nd]>=Q[j].st.st && !vis[u]){
							vis[u]=1;
							V.pb(u);
						}
					}
				}
				ans[Q[j].nd]=s;
				for(int i:V){
					vis[i]=0;
				}
				for(auto i:waz){wei2[i]=wei[i];}
				for(auto i:waz2){
					E[find(i)].clear();
				}
			}
			for(auto i:U){
				spec[i.st.nd]=0;
				wei[i.st.nd]=i.st.st;
				wei2[i.st.nd]=0;
			}
			Q.clear();
			U.clear();
		}
	}
	for(int i=0; i<q; i++){
		if(ans[i]){
			cout<<ans[i]<<"\n";
		}
	}
}

Compilation message

bridges.cpp: In function 'int main()':
bridges.cpp:65:34: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<std::pair<int, int>, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   65 |   if(qq==q-1 || Q.size()+U.size()==K){
      |                 ~~~~~~~~~~~~~~~~~^~~
bridges.cpp:88:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |    for(int j=0; j<Q.size(); j++){
      |                 ~^~~~~~~~~
bridges.cpp:89:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   89 |     while(wsk<edg2.size() && edg2[wsk].st>=Q[j].st.st){
      |           ~~~^~~~~~~~~~~~
bridges.cpp:108:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  108 |     for(int i=0; i<V.size(); i++){
      |                  ~^~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 30 ms 2900 KB Output is correct
4 Correct 4 ms 2644 KB Output is correct
5 Correct 11 ms 2772 KB Output is correct
6 Correct 10 ms 2772 KB Output is correct
7 Correct 11 ms 2772 KB Output is correct
8 Correct 11 ms 2772 KB Output is correct
9 Correct 12 ms 2772 KB Output is correct
10 Correct 10 ms 2772 KB Output is correct
11 Correct 9 ms 2780 KB Output is correct
12 Correct 10 ms 2772 KB Output is correct
13 Correct 13 ms 2772 KB Output is correct
14 Correct 12 ms 2772 KB Output is correct
15 Correct 12 ms 2772 KB Output is correct
16 Correct 11 ms 2776 KB Output is correct
17 Correct 14 ms 2772 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1342 ms 7496 KB Output is correct
2 Correct 1196 ms 7552 KB Output is correct
3 Correct 1194 ms 7492 KB Output is correct
4 Correct 1187 ms 7492 KB Output is correct
5 Correct 1156 ms 7560 KB Output is correct
6 Correct 1283 ms 6384 KB Output is correct
7 Correct 1238 ms 6416 KB Output is correct
8 Correct 1214 ms 6460 KB Output is correct
9 Correct 31 ms 3276 KB Output is correct
10 Correct 1212 ms 7340 KB Output is correct
11 Correct 1207 ms 7360 KB Output is correct
12 Correct 1029 ms 6112 KB Output is correct
13 Correct 1025 ms 6664 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 830 ms 5812 KB Output is correct
2 Correct 415 ms 3984 KB Output is correct
3 Correct 874 ms 5804 KB Output is correct
4 Correct 847 ms 6192 KB Output is correct
5 Correct 27 ms 3276 KB Output is correct
6 Correct 826 ms 5880 KB Output is correct
7 Correct 818 ms 5856 KB Output is correct
8 Correct 812 ms 5820 KB Output is correct
9 Correct 653 ms 5316 KB Output is correct
10 Correct 654 ms 5356 KB Output is correct
11 Correct 677 ms 5936 KB Output is correct
12 Correct 676 ms 6032 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1852 ms 7616 KB Output is correct
2 Correct 27 ms 3276 KB Output is correct
3 Correct 180 ms 6636 KB Output is correct
4 Correct 239 ms 6616 KB Output is correct
5 Correct 2248 ms 7556 KB Output is correct
6 Correct 1868 ms 7700 KB Output is correct
7 Correct 2296 ms 7628 KB Output is correct
8 Correct 936 ms 5636 KB Output is correct
9 Correct 934 ms 5636 KB Output is correct
10 Correct 940 ms 5676 KB Output is correct
11 Correct 1535 ms 7028 KB Output is correct
12 Correct 1459 ms 6980 KB Output is correct
13 Correct 1523 ms 6988 KB Output is correct
14 Correct 2228 ms 7820 KB Output is correct
15 Correct 2305 ms 7680 KB Output is correct
16 Correct 1928 ms 7580 KB Output is correct
17 Correct 1954 ms 7552 KB Output is correct
18 Correct 1893 ms 7564 KB Output is correct
19 Correct 1912 ms 7544 KB Output is correct
20 Correct 1663 ms 7328 KB Output is correct
21 Correct 1660 ms 7192 KB Output is correct
22 Correct 1871 ms 7444 KB Output is correct
23 Correct 1896 ms 7044 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1342 ms 7496 KB Output is correct
2 Correct 1196 ms 7552 KB Output is correct
3 Correct 1194 ms 7492 KB Output is correct
4 Correct 1187 ms 7492 KB Output is correct
5 Correct 1156 ms 7560 KB Output is correct
6 Correct 1283 ms 6384 KB Output is correct
7 Correct 1238 ms 6416 KB Output is correct
8 Correct 1214 ms 6460 KB Output is correct
9 Correct 31 ms 3276 KB Output is correct
10 Correct 1212 ms 7340 KB Output is correct
11 Correct 1207 ms 7360 KB Output is correct
12 Correct 1029 ms 6112 KB Output is correct
13 Correct 1025 ms 6664 KB Output is correct
14 Correct 830 ms 5812 KB Output is correct
15 Correct 415 ms 3984 KB Output is correct
16 Correct 874 ms 5804 KB Output is correct
17 Correct 847 ms 6192 KB Output is correct
18 Correct 27 ms 3276 KB Output is correct
19 Correct 826 ms 5880 KB Output is correct
20 Correct 818 ms 5856 KB Output is correct
21 Correct 812 ms 5820 KB Output is correct
22 Correct 653 ms 5316 KB Output is correct
23 Correct 654 ms 5356 KB Output is correct
24 Correct 677 ms 5936 KB Output is correct
25 Correct 676 ms 6032 KB Output is correct
26 Correct 1179 ms 7292 KB Output is correct
27 Correct 1286 ms 7356 KB Output is correct
28 Correct 1254 ms 7412 KB Output is correct
29 Correct 1239 ms 7416 KB Output is correct
30 Correct 1294 ms 7468 KB Output is correct
31 Correct 1282 ms 7472 KB Output is correct
32 Correct 1282 ms 7440 KB Output is correct
33 Correct 1218 ms 7464 KB Output is correct
34 Correct 1240 ms 7436 KB Output is correct
35 Correct 1246 ms 7476 KB Output is correct
36 Correct 1231 ms 7476 KB Output is correct
37 Correct 1220 ms 7436 KB Output is correct
38 Correct 1232 ms 7468 KB Output is correct
39 Correct 1048 ms 6752 KB Output is correct
40 Correct 1029 ms 6712 KB Output is correct
41 Correct 1029 ms 6700 KB Output is correct
42 Correct 1056 ms 7576 KB Output is correct
43 Correct 1046 ms 7580 KB Output is correct
44 Correct 1044 ms 7576 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 30 ms 2900 KB Output is correct
4 Correct 4 ms 2644 KB Output is correct
5 Correct 11 ms 2772 KB Output is correct
6 Correct 10 ms 2772 KB Output is correct
7 Correct 11 ms 2772 KB Output is correct
8 Correct 11 ms 2772 KB Output is correct
9 Correct 12 ms 2772 KB Output is correct
10 Correct 10 ms 2772 KB Output is correct
11 Correct 9 ms 2780 KB Output is correct
12 Correct 10 ms 2772 KB Output is correct
13 Correct 13 ms 2772 KB Output is correct
14 Correct 12 ms 2772 KB Output is correct
15 Correct 12 ms 2772 KB Output is correct
16 Correct 11 ms 2776 KB Output is correct
17 Correct 14 ms 2772 KB Output is correct
18 Correct 1342 ms 7496 KB Output is correct
19 Correct 1196 ms 7552 KB Output is correct
20 Correct 1194 ms 7492 KB Output is correct
21 Correct 1187 ms 7492 KB Output is correct
22 Correct 1156 ms 7560 KB Output is correct
23 Correct 1283 ms 6384 KB Output is correct
24 Correct 1238 ms 6416 KB Output is correct
25 Correct 1214 ms 6460 KB Output is correct
26 Correct 31 ms 3276 KB Output is correct
27 Correct 1212 ms 7340 KB Output is correct
28 Correct 1207 ms 7360 KB Output is correct
29 Correct 1029 ms 6112 KB Output is correct
30 Correct 1025 ms 6664 KB Output is correct
31 Correct 830 ms 5812 KB Output is correct
32 Correct 415 ms 3984 KB Output is correct
33 Correct 874 ms 5804 KB Output is correct
34 Correct 847 ms 6192 KB Output is correct
35 Correct 27 ms 3276 KB Output is correct
36 Correct 826 ms 5880 KB Output is correct
37 Correct 818 ms 5856 KB Output is correct
38 Correct 812 ms 5820 KB Output is correct
39 Correct 653 ms 5316 KB Output is correct
40 Correct 654 ms 5356 KB Output is correct
41 Correct 677 ms 5936 KB Output is correct
42 Correct 676 ms 6032 KB Output is correct
43 Correct 1852 ms 7616 KB Output is correct
44 Correct 27 ms 3276 KB Output is correct
45 Correct 180 ms 6636 KB Output is correct
46 Correct 239 ms 6616 KB Output is correct
47 Correct 2248 ms 7556 KB Output is correct
48 Correct 1868 ms 7700 KB Output is correct
49 Correct 2296 ms 7628 KB Output is correct
50 Correct 936 ms 5636 KB Output is correct
51 Correct 934 ms 5636 KB Output is correct
52 Correct 940 ms 5676 KB Output is correct
53 Correct 1535 ms 7028 KB Output is correct
54 Correct 1459 ms 6980 KB Output is correct
55 Correct 1523 ms 6988 KB Output is correct
56 Correct 2228 ms 7820 KB Output is correct
57 Correct 2305 ms 7680 KB Output is correct
58 Correct 1928 ms 7580 KB Output is correct
59 Correct 1954 ms 7552 KB Output is correct
60 Correct 1893 ms 7564 KB Output is correct
61 Correct 1912 ms 7544 KB Output is correct
62 Correct 1663 ms 7328 KB Output is correct
63 Correct 1660 ms 7192 KB Output is correct
64 Correct 1871 ms 7444 KB Output is correct
65 Correct 1896 ms 7044 KB Output is correct
66 Correct 1179 ms 7292 KB Output is correct
67 Correct 1286 ms 7356 KB Output is correct
68 Correct 1254 ms 7412 KB Output is correct
69 Correct 1239 ms 7416 KB Output is correct
70 Correct 1294 ms 7468 KB Output is correct
71 Correct 1282 ms 7472 KB Output is correct
72 Correct 1282 ms 7440 KB Output is correct
73 Correct 1218 ms 7464 KB Output is correct
74 Correct 1240 ms 7436 KB Output is correct
75 Correct 1246 ms 7476 KB Output is correct
76 Correct 1231 ms 7476 KB Output is correct
77 Correct 1220 ms 7436 KB Output is correct
78 Correct 1232 ms 7468 KB Output is correct
79 Correct 1048 ms 6752 KB Output is correct
80 Correct 1029 ms 6712 KB Output is correct
81 Correct 1029 ms 6700 KB Output is correct
82 Correct 1056 ms 7576 KB Output is correct
83 Correct 1046 ms 7580 KB Output is correct
84 Correct 1044 ms 7576 KB Output is correct
85 Correct 2318 ms 9824 KB Output is correct
86 Correct 205 ms 7460 KB Output is correct
87 Correct 326 ms 7444 KB Output is correct
88 Correct 2614 ms 9780 KB Output is correct
89 Correct 2203 ms 13648 KB Output is correct
90 Correct 2619 ms 11168 KB Output is correct
91 Correct 1247 ms 10156 KB Output is correct
92 Correct 1346 ms 10272 KB Output is correct
93 Correct 1230 ms 9168 KB Output is correct
94 Correct 1846 ms 12720 KB Output is correct
95 Correct 1809 ms 12656 KB Output is correct
96 Correct 1746 ms 11148 KB Output is correct
97 Correct 2490 ms 10532 KB Output is correct
98 Correct 2398 ms 11328 KB Output is correct
99 Correct 2285 ms 13640 KB Output is correct
100 Correct 2303 ms 13640 KB Output is correct
101 Correct 2323 ms 13700 KB Output is correct
102 Correct 2334 ms 13664 KB Output is correct
103 Correct 1923 ms 11156 KB Output is correct
104 Correct 1934 ms 11236 KB Output is correct
105 Correct 1772 ms 11820 KB Output is correct
106 Correct 1546 ms 11928 KB Output is correct
107 Correct 1751 ms 10836 KB Output is correct
108 Correct 2165 ms 11712 KB Output is correct
109 Correct 2187 ms 9692 KB Output is correct