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Submission #934149

# Submission time Handle Problem Language Result Execution time Memory
934149 2024-02-26T21:57:27 Z amirhoseinfar1385 Bridges (APIO19_bridges) C++17
100 / 100
 2989 ms 13108 KB 
#include<bits/stdc++.h>
using namespace std;
const int maxn=50000+10,maxm=100000+10,sq=600;
int n,m,q,res[maxm];
struct yal{
	int u,v,w,tagh,asl;
}alle[maxm];
struct qu{
	int qq,ind,w;
}allq[maxm];
struct dsu{
	vector<int>allv;
	int par[maxn],sz[maxn];
	dsu(){
		for(int i=1;i<maxn;i++){
			par[i]=i;
			sz[i]=1;
		}
	}
	void clear(){
		allv.clear();
		for(int i=1;i<maxn;i++){
			par[i]=i;
			sz[i]=1;
		}
	}
	int root(int u){
		if(u==par[u]){
			return u;
		}
		return root(par[u]);
	}
	void con(int u,int v){
		int rootu=root(u),rootv=root(v);
		if(rootu!=rootv){
			if(sz[rootu]<sz[rootv]){
				swap(rootu,rootv);
			}
			allv.push_back(rootv);
			par[rootv]=rootu;
			sz[rootu]+=sz[rootv];
			return ;
		}
		allv.push_back(-1);
	}
	int gets(int u){
		return sz[root(u)];
	}
	void back(){
		int x=allv.back();
		allv.pop_back();
		if(x==-1){
			return ;
		}
		sz[par[x]]-=sz[x];
		par[x]=x;
	}
}ds;
vector<int>allp,allind,allval,que[maxm];
bool cmp(int a,int b){
	if(alle[a].w!=alle[b].w){
		return alle[a].w<alle[b].w;
	}
	if(alle[a].u!=alle[b].w){
		return alle[a].u<alle[b].u;
	}
	return alle[a].v<alle[b].v;
}

void vorod(){
	cin>>n>>m;
	for(int i=1;i<=m;i++){
		cin>>alle[i].u>>alle[i].v>>alle[i].w;
		alle[i].w*=-1;
		alle[i].tagh=0;
		alle[i].asl=alle[i].w;
		allind.push_back(i);
	}
	sort(allind.begin(),allind.end(),cmp);
	for(auto x:allind){
		allval.push_back(alle[x].w);
	}	
	cin>>q;
	for(int i=0;i<q;i++){
		cin>>allq[i].qq>>allq[i].ind>>allq[i].w;
		allq[i].w*=-1;
	}
}

void calq(int ind){
	for(auto x:que[ind]){
		int l=x-(x%sq);
		for(int i=l;i<x;i++){
			if(allq[i].qq==1){
				alle[allq[i].ind].w=allq[i].w;
			}
		}
		for(auto y:allp){
			if(allq[x].w>=alle[y].w){
				ds.con(alle[y].u,alle[y].v);
			}
		}
		res[x]=ds.gets(allq[x].ind);
		for(auto y:allp){
			if(allq[x].w>=alle[y].w){
				ds.back();
			}
		}
		for(int i=l;i<x;i++){
			if(allq[i].qq==1){
				alle[allq[i].ind].w=alle[allq[i].ind].asl;
			}
		}
	}
	que[ind].clear();
}

void solve(){
	for(int l=0;l<q;l+=sq){
		sort(allind.begin(),allind.end(),cmp);
		allval.clear();
		for(auto x:allind){
			allval.push_back(alle[x].w);
		}	
		ds.clear();
		allp.clear();
		for(int i=l;i<min(q,l+sq);i++){
			if(allq[i].qq==1){
				alle[allq[i].ind].tagh=1;
				allp.push_back(allq[i].ind);
			}
			else{
				int p=upper_bound(allval.begin(),allval.end(),allq[i].w)-allval.begin();
				que[p].push_back(i);
			}
		}
		for(int i=0;i<(int)allind.size();i++){
			calq(i);
			if(alle[allind[i]].tagh==0){
				ds.con(alle[allind[i]].u,alle[allind[i]].v);
			}
		}
		calq((int)allind.size());
		for(int i=l;i<min(q,l+sq);i++){
			if(allq[i].qq==1){
				alle[allq[i].ind].tagh=0;
				alle[allq[i].ind].w=alle[allq[i].ind].asl=allq[i].w;
			}
		}
	}
}

void khor(){
	for(int i=0;i<q;i++){
		if(allq[i].qq==2)
			cout<<res[i]<<"\n";
	}
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	vorod();	
	solve();
	khor();
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4700 KB Output is correct
2 Correct 2 ms 4700 KB Output is correct
3 Correct 21 ms 4696 KB Output is correct
4 Correct 8 ms 4952 KB Output is correct
5 Correct 22 ms 4700 KB Output is correct
6 Correct 17 ms 4696 KB Output is correct
7 Correct 18 ms 4788 KB Output is correct
8 Correct 25 ms 4700 KB Output is correct
9 Correct 16 ms 4700 KB Output is correct
10 Correct 28 ms 4700 KB Output is correct
11 Correct 26 ms 4700 KB Output is correct
12 Correct 27 ms 4696 KB Output is correct
13 Correct 34 ms 4792 KB Output is correct
14 Correct 25 ms 4700 KB Output is correct
15 Correct 35 ms 4700 KB Output is correct
16 Correct 26 ms 4696 KB Output is correct
17 Correct 26 ms 4696 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1237 ms 7496 KB Output is correct
2 Correct 1224 ms 7292 KB Output is correct
3 Correct 1187 ms 7400 KB Output is correct
4 Correct 1234 ms 7372 KB Output is correct
5 Correct 1269 ms 7508 KB Output is correct
6 Correct 1258 ms 6948 KB Output is correct
7 Correct 1296 ms 6796 KB Output is correct
8 Correct 1851 ms 6612 KB Output is correct
9 Correct 73 ms 5232 KB Output is correct
10 Correct 1134 ms 6652 KB Output is correct
11 Correct 1073 ms 6920 KB Output is correct
12 Correct 1146 ms 6988 KB Output is correct
13 Correct 1044 ms 6740 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 780 ms 6544 KB Output is correct
2 Correct 388 ms 5456 KB Output is correct
3 Correct 787 ms 6708 KB Output is correct
4 Correct 803 ms 6752 KB Output is correct
5 Correct 77 ms 5200 KB Output is correct
6 Correct 812 ms 6740 KB Output is correct
7 Correct 784 ms 6560 KB Output is correct
8 Correct 765 ms 6804 KB Output is correct
9 Correct 748 ms 6736 KB Output is correct
10 Correct 1034 ms 7084 KB Output is correct
11 Correct 637 ms 5972 KB Output is correct
12 Correct 625 ms 5968 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1785 ms 10008 KB Output is correct
2 Correct 73 ms 5204 KB Output is correct
3 Correct 203 ms 7752 KB Output is correct
4 Correct 135 ms 7768 KB Output is correct
5 Correct 1746 ms 8524 KB Output is correct
6 Correct 1813 ms 9664 KB Output is correct
7 Correct 1813 ms 8444 KB Output is correct
8 Correct 868 ms 7552 KB Output is correct
9 Correct 855 ms 7464 KB Output is correct
10 Correct 816 ms 6908 KB Output is correct
11 Correct 1296 ms 8520 KB Output is correct
12 Correct 1328 ms 8748 KB Output is correct
13 Correct 1371 ms 7720 KB Output is correct
14 Correct 1770 ms 8380 KB Output is correct
15 Correct 1745 ms 8512 KB Output is correct
16 Correct 1876 ms 9764 KB Output is correct
17 Correct 1845 ms 9760 KB Output is correct
18 Correct 1876 ms 9680 KB Output is correct
19 Correct 1816 ms 9680 KB Output is correct
20 Correct 1573 ms 8280 KB Output is correct
21 Correct 1557 ms 7964 KB Output is correct
22 Correct 1804 ms 9240 KB Output is correct
23 Correct 1394 ms 8096 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1237 ms 7496 KB Output is correct
2 Correct 1224 ms 7292 KB Output is correct
3 Correct 1187 ms 7400 KB Output is correct
4 Correct 1234 ms 7372 KB Output is correct
5 Correct 1269 ms 7508 KB Output is correct
6 Correct 1258 ms 6948 KB Output is correct
7 Correct 1296 ms 6796 KB Output is correct
8 Correct 1851 ms 6612 KB Output is correct
9 Correct 73 ms 5232 KB Output is correct
10 Correct 1134 ms 6652 KB Output is correct
11 Correct 1073 ms 6920 KB Output is correct
12 Correct 1146 ms 6988 KB Output is correct
13 Correct 1044 ms 6740 KB Output is correct
14 Correct 780 ms 6544 KB Output is correct
15 Correct 388 ms 5456 KB Output is correct
16 Correct 787 ms 6708 KB Output is correct
17 Correct 803 ms 6752 KB Output is correct
18 Correct 77 ms 5200 KB Output is correct
19 Correct 812 ms 6740 KB Output is correct
20 Correct 784 ms 6560 KB Output is correct
21 Correct 765 ms 6804 KB Output is correct
22 Correct 748 ms 6736 KB Output is correct
23 Correct 1034 ms 7084 KB Output is correct
24 Correct 637 ms 5972 KB Output is correct
25 Correct 625 ms 5968 KB Output is correct
26 Correct 1204 ms 7308 KB Output is correct
27 Correct 1311 ms 7072 KB Output is correct
28 Correct 1337 ms 7684 KB Output is correct
29 Correct 1391 ms 6924 KB Output is correct
30 Correct 1295 ms 7312 KB Output is correct
31 Correct 1291 ms 7252 KB Output is correct
32 Correct 1252 ms 7236 KB Output is correct
33 Correct 1263 ms 7368 KB Output is correct
34 Correct 1349 ms 7180 KB Output is correct
35 Correct 1232 ms 7552 KB Output is correct
36 Correct 1237 ms 6984 KB Output is correct
37 Correct 1159 ms 6904 KB Output is correct
38 Correct 1139 ms 6992 KB Output is correct
39 Correct 1142 ms 7672 KB Output is correct
40 Correct 1155 ms 7396 KB Output is correct
41 Correct 1188 ms 7188 KB Output is correct
42 Correct 1014 ms 6788 KB Output is correct
43 Correct 1018 ms 6724 KB Output is correct
44 Correct 1059 ms 7080 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4700 KB Output is correct
2 Correct 2 ms 4700 KB Output is correct
3 Correct 21 ms 4696 KB Output is correct
4 Correct 8 ms 4952 KB Output is correct
5 Correct 22 ms 4700 KB Output is correct
6 Correct 17 ms 4696 KB Output is correct
7 Correct 18 ms 4788 KB Output is correct
8 Correct 25 ms 4700 KB Output is correct
9 Correct 16 ms 4700 KB Output is correct
10 Correct 28 ms 4700 KB Output is correct
11 Correct 26 ms 4700 KB Output is correct
12 Correct 27 ms 4696 KB Output is correct
13 Correct 34 ms 4792 KB Output is correct
14 Correct 25 ms 4700 KB Output is correct
15 Correct 35 ms 4700 KB Output is correct
16 Correct 26 ms 4696 KB Output is correct
17 Correct 26 ms 4696 KB Output is correct
18 Correct 1237 ms 7496 KB Output is correct
19 Correct 1224 ms 7292 KB Output is correct
20 Correct 1187 ms 7400 KB Output is correct
21 Correct 1234 ms 7372 KB Output is correct
22 Correct 1269 ms 7508 KB Output is correct
23 Correct 1258 ms 6948 KB Output is correct
24 Correct 1296 ms 6796 KB Output is correct
25 Correct 1851 ms 6612 KB Output is correct
26 Correct 73 ms 5232 KB Output is correct
27 Correct 1134 ms 6652 KB Output is correct
28 Correct 1073 ms 6920 KB Output is correct
29 Correct 1146 ms 6988 KB Output is correct
30 Correct 1044 ms 6740 KB Output is correct
31 Correct 780 ms 6544 KB Output is correct
32 Correct 388 ms 5456 KB Output is correct
33 Correct 787 ms 6708 KB Output is correct
34 Correct 803 ms 6752 KB Output is correct
35 Correct 77 ms 5200 KB Output is correct
36 Correct 812 ms 6740 KB Output is correct
37 Correct 784 ms 6560 KB Output is correct
38 Correct 765 ms 6804 KB Output is correct
39 Correct 748 ms 6736 KB Output is correct
40 Correct 1034 ms 7084 KB Output is correct
41 Correct 637 ms 5972 KB Output is correct
42 Correct 625 ms 5968 KB Output is correct
43 Correct 1785 ms 10008 KB Output is correct
44 Correct 73 ms 5204 KB Output is correct
45 Correct 203 ms 7752 KB Output is correct
46 Correct 135 ms 7768 KB Output is correct
47 Correct 1746 ms 8524 KB Output is correct
48 Correct 1813 ms 9664 KB Output is correct
49 Correct 1813 ms 8444 KB Output is correct
50 Correct 868 ms 7552 KB Output is correct
51 Correct 855 ms 7464 KB Output is correct
52 Correct 816 ms 6908 KB Output is correct
53 Correct 1296 ms 8520 KB Output is correct
54 Correct 1328 ms 8748 KB Output is correct
55 Correct 1371 ms 7720 KB Output is correct
56 Correct 1770 ms 8380 KB Output is correct
57 Correct 1745 ms 8512 KB Output is correct
58 Correct 1876 ms 9764 KB Output is correct
59 Correct 1845 ms 9760 KB Output is correct
60 Correct 1876 ms 9680 KB Output is correct
61 Correct 1816 ms 9680 KB Output is correct
62 Correct 1573 ms 8280 KB Output is correct
63 Correct 1557 ms 7964 KB Output is correct
64 Correct 1804 ms 9240 KB Output is correct
65 Correct 1394 ms 8096 KB Output is correct
66 Correct 1204 ms 7308 KB Output is correct
67 Correct 1311 ms 7072 KB Output is correct
68 Correct 1337 ms 7684 KB Output is correct
69 Correct 1391 ms 6924 KB Output is correct
70 Correct 1295 ms 7312 KB Output is correct
71 Correct 1291 ms 7252 KB Output is correct
72 Correct 1252 ms 7236 KB Output is correct
73 Correct 1263 ms 7368 KB Output is correct
74 Correct 1349 ms 7180 KB Output is correct
75 Correct 1232 ms 7552 KB Output is correct
76 Correct 1237 ms 6984 KB Output is correct
77 Correct 1159 ms 6904 KB Output is correct
78 Correct 1139 ms 6992 KB Output is correct
79 Correct 1142 ms 7672 KB Output is correct
80 Correct 1155 ms 7396 KB Output is correct
81 Correct 1188 ms 7188 KB Output is correct
82 Correct 1014 ms 6788 KB Output is correct
83 Correct 1018 ms 6724 KB Output is correct
84 Correct 1059 ms 7080 KB Output is correct
85 Correct 2644 ms 9320 KB Output is correct
86 Correct 259 ms 9560 KB Output is correct
87 Correct 147 ms 9812 KB Output is correct
88 Correct 2691 ms 10440 KB Output is correct
89 Correct 2593 ms 13096 KB Output is correct
90 Correct 2600 ms 10572 KB Output is correct
91 Correct 1452 ms 10432 KB Output is correct
92 Correct 1275 ms 10244 KB Output is correct
93 Correct 1321 ms 9156 KB Output is correct
94 Correct 1981 ms 11412 KB Output is correct
95 Correct 2004 ms 11680 KB Output is correct
96 Correct 2125 ms 10552 KB Output is correct
97 Correct 2592 ms 10612 KB Output is correct
98 Correct 2637 ms 10368 KB Output is correct
99 Correct 2852 ms 13060 KB Output is correct
100 Correct 2729 ms 12972 KB Output is correct
101 Correct 2724 ms 13092 KB Output is correct
102 Correct 2989 ms 13108 KB Output is correct
103 Correct 2296 ms 10932 KB Output is correct
104 Correct 2780 ms 10996 KB Output is correct
105 Correct 2084 ms 10936 KB Output is correct
106 Correct 1707 ms 10416 KB Output is correct
107 Correct 2138 ms 11068 KB Output is correct
108 Correct 2576 ms 12368 KB Output is correct
109 Correct 2185 ms 9612 KB Output is correct