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Submission #954367

# Submission time Handle Problem Language Result Execution time Memory
954367 2024-03-27T17:14:57 Z vjudge1 Swapping Cities (APIO20_swap) C++17
100 / 100
 303 ms 41836 KB 
#include "swap.h"
#include<bits/stdc++.h>
using namespace std;
struct yal{
	int u,v,w,vas;
	bool operator <(yal b){
		return w<b.w;
	}
	int getad(int fu){
		return (fu^u^v);
	}
};
const int maxn=100000+10,lg=17;
int n,m,wlca[lg][maxn],lca[lg][maxn],inf=1e9+5,mainres[maxn],timea;
vector<yal>alle;
vector<int>adjt[maxn];
pair<int,int>stf[maxn];

bool zird(int u,int v){
	return stf[v].first<=stf[u].first&&stf[v].second>=stf[u].second;
}

struct dsu{
	int par[maxn],val[maxn];
	vector<int>allv[maxn];
	dsu(){
		for(int i=0;i<maxn;i++){
			par[i]=i;
			val[i]=inf;
			allv[i].push_back(i);
		}
	};
	int root(int u){
		if(u==par[u]){
			return u;
		}
		return par[u]=root(par[u]);
	}
	int con(int u,int v,int w){
		int rootu=root(u),rootv=root(v);
		if(rootu!=rootv){
			par[rootv]=rootu;
			if((int)allv[rootu].size()<(int)allv[rootv].size()){
				swap(allv[rootu],allv[rootv]);
			}
			for(auto x:allv[rootv]){
				allv[rootu].push_back(x);
			}
			if(val[rootu]<inf||val[rootv]<inf){
				val[rootu]=w;
			}
			if(val[rootu]<inf){
				for(auto x:allv[rootu]){
					mainres[x]=min(mainres[x],val[rootu]);
				}
				allv[rootu].clear();
			}
			return 1;
		}else{
			return 0;
		}
	}
	void tagh(int u,int w){
		u=root(u);
		for(auto x:allv[u]){
			mainres[x]=min(mainres[x],w);
		}
		allv[u].clear();
		val[u]=min(w,val[u]);
	}
}ds;
int av=inf;

void dfs(int u=1,int par=-1){
	timea++;
	stf[u].first=timea;
	for(auto x:adjt[u]){
		int v=alle[x].getad(u);
		if(v==par){
			continue;
		}
		wlca[0][v]=alle[x].w;
		lca[0][v]=u;
		dfs(v,u);
	}
	stf[u].second=timea;
}

void callca(){
	for(int i=1;i<lg;i++){
		for(int j=1;j<=n;j++){
			lca[i][j]=lca[i-1][lca[i-1][j]];
			wlca[i][j]=max(wlca[i-1][j],wlca[i-1][lca[i-1][j]]);
		}
	}
}

int getlca(int u,int v){
	if(zird(u,v)){
		return v;
	}
	if(zird(v,u)){
		return u;
	}
	for(int i=lg-1;i>=0;i--){
		if(lca[i][u]!=0&&zird(v,lca[i][u])==0){
			u=lca[i][u];
		}
	}
	return lca[0][u];
}

int getwlca(int u,int v){
	if(u==v){
		return 0;
	}
	int ret=0;
	for(int i=lg-1;i>=0;i--){
		if(lca[i][u]!=0&&zird(v,lca[i][u])==0){
			ret=max(ret,wlca[i][u]);
			u=lca[i][u];
		}
	}
	ret=max(ret,wlca[0][u]);
	return ret;
}

void init(int N, int M,std::vector<int> U, std::vector<int> V, std::vector<int> W) {
	n=N;
	m=M;
	alle.resize(m);
	for(int i=0;i<maxn;i++){
		mainres[i]=inf;
	}
	for(int i=0;i<m;i++){
		U[i]++;
		V[i]++;
		alle[i].u=U[i];
		alle[i].v=V[i];
		alle[i].w=W[i];
	}
	sort(alle.begin(),alle.end());
	for(int i=0;i<m;i++){
		if(ds.con(alle[i].u,alle[i].v,alle[i].w)){
			alle[i].vas=1;
			adjt[alle[i].u].push_back(i);
			adjt[alle[i].v].push_back(i);
			if((int)adjt[alle[i].u].size()>2||(int)adjt[alle[i].v].size()>2){
				ds.tagh(alle[i].u,alle[i].w);
			}
		}else{
			ds.tagh(alle[i].u,alle[i].w);
		}
	}
	dfs();
	callca();
}
int mx;
void dfsres(int u,int v){
	int uv=getlca(u,v);
	mx=max(getwlca(u,uv),getwlca(v,uv));
}

int getMinimumFuelCapacity(int X, int Y) {
	X++;
	Y++;
  mx=inf;
  dfsres(X,Y);
  long long ret=max(mx,min(mainres[X],mainres[Y]));
  if(ret>=inf){
  	return -1;
  }
  return ret;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 22104 KB Output is correct
2 Correct 6 ms 22356 KB Output is correct
3 Correct 7 ms 22104 KB Output is correct
4 Correct 10 ms 22360 KB Output is correct
5 Correct 8 ms 22116 KB Output is correct
6 Correct 8 ms 22108 KB Output is correct
7 Correct 7 ms 22108 KB Output is correct
8 Correct 7 ms 22364 KB Output is correct
9 Correct 62 ms 34184 KB Output is correct
10 Correct 87 ms 37776 KB Output is correct
11 Correct 79 ms 37140 KB Output is correct
12 Correct 93 ms 38424 KB Output is correct
13 Correct 72 ms 37120 KB Output is correct
14 Correct 78 ms 33996 KB Output is correct
15 Correct 243 ms 39796 KB Output is correct
16 Correct 213 ms 38072 KB Output is correct
17 Correct 211 ms 41776 KB Output is correct
18 Correct 211 ms 37812 KB Output is correct
19 Correct 92 ms 28320 KB Output is correct
20 Correct 233 ms 40184 KB Output is correct
21 Correct 229 ms 39432 KB Output is correct
22 Correct 240 ms 41264 KB Output is correct
23 Correct 212 ms 38816 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 22104 KB Output is correct
2 Correct 6 ms 22356 KB Output is correct
3 Correct 114 ms 33392 KB Output is correct
4 Correct 115 ms 33576 KB Output is correct
5 Correct 118 ms 33636 KB Output is correct
6 Correct 115 ms 33584 KB Output is correct
7 Correct 121 ms 33688 KB Output is correct
8 Correct 127 ms 33288 KB Output is correct
9 Correct 114 ms 33676 KB Output is correct
10 Correct 112 ms 33344 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 22104 KB Output is correct
2 Correct 6 ms 22356 KB Output is correct
3 Correct 7 ms 22104 KB Output is correct
4 Correct 10 ms 22360 KB Output is correct
5 Correct 8 ms 22116 KB Output is correct
6 Correct 8 ms 22108 KB Output is correct
7 Correct 7 ms 22108 KB Output is correct
8 Correct 7 ms 22364 KB Output is correct
9 Correct 10 ms 22108 KB Output is correct
10 Correct 8 ms 22264 KB Output is correct
11 Correct 7 ms 22108 KB Output is correct
12 Correct 9 ms 22280 KB Output is correct
13 Correct 7 ms 22108 KB Output is correct
14 Correct 7 ms 22260 KB Output is correct
15 Correct 7 ms 22312 KB Output is correct
16 Correct 8 ms 22108 KB Output is correct
17 Correct 7 ms 22108 KB Output is correct
18 Correct 8 ms 22308 KB Output is correct
19 Correct 8 ms 22108 KB Output is correct
20 Correct 7 ms 22224 KB Output is correct
21 Correct 7 ms 22108 KB Output is correct
22 Correct 7 ms 22256 KB Output is correct
23 Correct 7 ms 22108 KB Output is correct
24 Correct 8 ms 22288 KB Output is correct
25 Correct 7 ms 22108 KB Output is correct
26 Correct 9 ms 22360 KB Output is correct
27 Correct 7 ms 22360 KB Output is correct
28 Correct 8 ms 22300 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 22108 KB Output is correct
2 Correct 16 ms 22104 KB Output is correct
3 Correct 6 ms 22356 KB Output is correct
4 Correct 7 ms 22104 KB Output is correct
5 Correct 10 ms 22360 KB Output is correct
6 Correct 8 ms 22116 KB Output is correct
7 Correct 8 ms 22108 KB Output is correct
8 Correct 7 ms 22108 KB Output is correct
9 Correct 7 ms 22364 KB Output is correct
10 Correct 62 ms 34184 KB Output is correct
11 Correct 87 ms 37776 KB Output is correct
12 Correct 79 ms 37140 KB Output is correct
13 Correct 93 ms 38424 KB Output is correct
14 Correct 72 ms 37120 KB Output is correct
15 Correct 8 ms 22264 KB Output is correct
16 Correct 7 ms 22108 KB Output is correct
17 Correct 9 ms 22280 KB Output is correct
18 Correct 7 ms 22108 KB Output is correct
19 Correct 7 ms 22260 KB Output is correct
20 Correct 7 ms 22312 KB Output is correct
21 Correct 8 ms 22108 KB Output is correct
22 Correct 7 ms 22108 KB Output is correct
23 Correct 8 ms 22308 KB Output is correct
24 Correct 8 ms 22108 KB Output is correct
25 Correct 7 ms 22224 KB Output is correct
26 Correct 7 ms 22108 KB Output is correct
27 Correct 7 ms 22256 KB Output is correct
28 Correct 7 ms 22108 KB Output is correct
29 Correct 8 ms 22288 KB Output is correct
30 Correct 7 ms 22108 KB Output is correct
31 Correct 9 ms 22360 KB Output is correct
32 Correct 7 ms 22360 KB Output is correct
33 Correct 8 ms 22300 KB Output is correct
34 Correct 13 ms 23128 KB Output is correct
35 Correct 85 ms 37460 KB Output is correct
36 Correct 93 ms 34780 KB Output is correct
37 Correct 84 ms 32592 KB Output is correct
38 Correct 79 ms 31568 KB Output is correct
39 Correct 82 ms 30656 KB Output is correct
40 Correct 67 ms 29780 KB Output is correct
41 Correct 101 ms 36332 KB Output is correct
42 Correct 81 ms 37416 KB Output is correct
43 Correct 88 ms 35320 KB Output is correct
44 Correct 74 ms 30712 KB Output is correct
45 Correct 86 ms 31572 KB Output is correct
46 Correct 85 ms 34144 KB Output is correct
47 Correct 75 ms 31304 KB Output is correct
48 Correct 75 ms 31056 KB Output is correct
49 Correct 51 ms 28384 KB Output is correct
50 Correct 44 ms 27204 KB Output is correct
51 Correct 79 ms 30096 KB Output is correct
52 Correct 103 ms 36536 KB Output is correct
53 Correct 101 ms 33680 KB Output is correct
54 Correct 116 ms 40388 KB Output is correct
55 Correct 65 ms 36348 KB Output is correct
56 Correct 95 ms 33360 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 22104 KB Output is correct
2 Correct 6 ms 22356 KB Output is correct
3 Correct 7 ms 22104 KB Output is correct
4 Correct 10 ms 22360 KB Output is correct
5 Correct 8 ms 22116 KB Output is correct
6 Correct 8 ms 22108 KB Output is correct
7 Correct 7 ms 22108 KB Output is correct
8 Correct 7 ms 22364 KB Output is correct
9 Correct 62 ms 34184 KB Output is correct
10 Correct 87 ms 37776 KB Output is correct
11 Correct 79 ms 37140 KB Output is correct
12 Correct 93 ms 38424 KB Output is correct
13 Correct 72 ms 37120 KB Output is correct
14 Correct 78 ms 33996 KB Output is correct
15 Correct 243 ms 39796 KB Output is correct
16 Correct 213 ms 38072 KB Output is correct
17 Correct 211 ms 41776 KB Output is correct
18 Correct 211 ms 37812 KB Output is correct
19 Correct 114 ms 33392 KB Output is correct
20 Correct 115 ms 33576 KB Output is correct
21 Correct 118 ms 33636 KB Output is correct
22 Correct 115 ms 33584 KB Output is correct
23 Correct 121 ms 33688 KB Output is correct
24 Correct 127 ms 33288 KB Output is correct
25 Correct 114 ms 33676 KB Output is correct
26 Correct 112 ms 33344 KB Output is correct
27 Correct 8 ms 22264 KB Output is correct
28 Correct 7 ms 22108 KB Output is correct
29 Correct 9 ms 22280 KB Output is correct
30 Correct 7 ms 22108 KB Output is correct
31 Correct 7 ms 22260 KB Output is correct
32 Correct 7 ms 22312 KB Output is correct
33 Correct 8 ms 22108 KB Output is correct
34 Correct 7 ms 22108 KB Output is correct
35 Correct 8 ms 22308 KB Output is correct
36 Correct 13 ms 23128 KB Output is correct
37 Correct 85 ms 37460 KB Output is correct
38 Correct 93 ms 34780 KB Output is correct
39 Correct 84 ms 32592 KB Output is correct
40 Correct 79 ms 31568 KB Output is correct
41 Correct 82 ms 30656 KB Output is correct
42 Correct 67 ms 29780 KB Output is correct
43 Correct 101 ms 36332 KB Output is correct
44 Correct 81 ms 37416 KB Output is correct
45 Correct 88 ms 35320 KB Output is correct
46 Correct 74 ms 30712 KB Output is correct
47 Correct 24 ms 23640 KB Output is correct
48 Correct 224 ms 38740 KB Output is correct
49 Correct 268 ms 36560 KB Output is correct
50 Correct 236 ms 35536 KB Output is correct
51 Correct 248 ms 34512 KB Output is correct
52 Correct 197 ms 32944 KB Output is correct
53 Correct 157 ms 31304 KB Output is correct
54 Correct 261 ms 39044 KB Output is correct
55 Correct 262 ms 39596 KB Output is correct
56 Correct 217 ms 38368 KB Output is correct
57 Correct 210 ms 33964 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 22108 KB Output is correct
2 Correct 16 ms 22104 KB Output is correct
3 Correct 6 ms 22356 KB Output is correct
4 Correct 7 ms 22104 KB Output is correct
5 Correct 10 ms 22360 KB Output is correct
6 Correct 8 ms 22116 KB Output is correct
7 Correct 8 ms 22108 KB Output is correct
8 Correct 7 ms 22108 KB Output is correct
9 Correct 7 ms 22364 KB Output is correct
10 Correct 62 ms 34184 KB Output is correct
11 Correct 87 ms 37776 KB Output is correct
12 Correct 79 ms 37140 KB Output is correct
13 Correct 93 ms 38424 KB Output is correct
14 Correct 72 ms 37120 KB Output is correct
15 Correct 78 ms 33996 KB Output is correct
16 Correct 243 ms 39796 KB Output is correct
17 Correct 213 ms 38072 KB Output is correct
18 Correct 211 ms 41776 KB Output is correct
19 Correct 211 ms 37812 KB Output is correct
20 Correct 114 ms 33392 KB Output is correct
21 Correct 115 ms 33576 KB Output is correct
22 Correct 118 ms 33636 KB Output is correct
23 Correct 115 ms 33584 KB Output is correct
24 Correct 121 ms 33688 KB Output is correct
25 Correct 127 ms 33288 KB Output is correct
26 Correct 114 ms 33676 KB Output is correct
27 Correct 112 ms 33344 KB Output is correct
28 Correct 8 ms 22264 KB Output is correct
29 Correct 7 ms 22108 KB Output is correct
30 Correct 9 ms 22280 KB Output is correct
31 Correct 7 ms 22108 KB Output is correct
32 Correct 7 ms 22260 KB Output is correct
33 Correct 7 ms 22312 KB Output is correct
34 Correct 8 ms 22108 KB Output is correct
35 Correct 7 ms 22108 KB Output is correct
36 Correct 8 ms 22308 KB Output is correct
37 Correct 13 ms 23128 KB Output is correct
38 Correct 85 ms 37460 KB Output is correct
39 Correct 93 ms 34780 KB Output is correct
40 Correct 84 ms 32592 KB Output is correct
41 Correct 79 ms 31568 KB Output is correct
42 Correct 82 ms 30656 KB Output is correct
43 Correct 67 ms 29780 KB Output is correct
44 Correct 101 ms 36332 KB Output is correct
45 Correct 81 ms 37416 KB Output is correct
46 Correct 88 ms 35320 KB Output is correct
47 Correct 74 ms 30712 KB Output is correct
48 Correct 24 ms 23640 KB Output is correct
49 Correct 224 ms 38740 KB Output is correct
50 Correct 268 ms 36560 KB Output is correct
51 Correct 236 ms 35536 KB Output is correct
52 Correct 248 ms 34512 KB Output is correct
53 Correct 197 ms 32944 KB Output is correct
54 Correct 157 ms 31304 KB Output is correct
55 Correct 261 ms 39044 KB Output is correct
56 Correct 262 ms 39596 KB Output is correct
57 Correct 217 ms 38368 KB Output is correct
58 Correct 210 ms 33964 KB Output is correct
59 Correct 92 ms 28320 KB Output is correct
60 Correct 233 ms 40184 KB Output is correct
61 Correct 229 ms 39432 KB Output is correct
62 Correct 240 ms 41264 KB Output is correct
63 Correct 212 ms 38816 KB Output is correct
64 Correct 8 ms 22108 KB Output is correct
65 Correct 7 ms 22224 KB Output is correct
66 Correct 7 ms 22108 KB Output is correct
67 Correct 7 ms 22256 KB Output is correct
68 Correct 7 ms 22108 KB Output is correct
69 Correct 8 ms 22288 KB Output is correct
70 Correct 7 ms 22108 KB Output is correct
71 Correct 9 ms 22360 KB Output is correct
72 Correct 7 ms 22360 KB Output is correct
73 Correct 8 ms 22300 KB Output is correct
74 Correct 86 ms 31572 KB Output is correct
75 Correct 85 ms 34144 KB Output is correct
76 Correct 75 ms 31304 KB Output is correct
77 Correct 75 ms 31056 KB Output is correct
78 Correct 51 ms 28384 KB Output is correct
79 Correct 44 ms 27204 KB Output is correct
80 Correct 79 ms 30096 KB Output is correct
81 Correct 103 ms 36536 KB Output is correct
82 Correct 101 ms 33680 KB Output is correct
83 Correct 116 ms 40388 KB Output is correct
84 Correct 65 ms 36348 KB Output is correct
85 Correct 95 ms 33360 KB Output is correct
86 Correct 54 ms 25940 KB Output is correct
87 Correct 276 ms 36052 KB Output is correct
88 Correct 242 ms 36024 KB Output is correct
89 Correct 167 ms 32884 KB Output is correct
90 Correct 161 ms 30756 KB Output is correct
91 Correct 140 ms 30896 KB Output is correct
92 Correct 182 ms 32692 KB Output is correct
93 Correct 297 ms 38928 KB Output is correct
94 Correct 206 ms 35896 KB Output is correct
95 Correct 303 ms 41836 KB Output is correct
96 Correct 215 ms 36724 KB Output is correct
97 Correct 224 ms 34668 KB Output is correct