oj.uz

Submission #434558

# Submission time Handle Problem Language Result Execution time Memory
434558 2021-06-21T12:01:24 Z dqhungdl Swapping Cities (APIO20_swap) C++17
100 / 100
 284 ms 24232 KB 
#include "swap.h"

#include <bits/stdc++.h>
using namespace std;

typedef pair<int,int> ii;
typedef pair<int,ii> iii;
const int MAX=1e5+5;
int P[MAX];
bool isLine[MAX];
ii segs[MAX];
vector<int> S[MAX];
vector<iii> edges;
vector<ii> history[MAX];

int find(int u) {
	if(P[u]==u)
		return u;
	return P[u]=find(P[u]);
}

ii getNewSeg(ii s1,ii s2,int u,int v) {
	if(s1.first==u) {
		if(s2.first==v)
			return {s1.second,s2.second};
		if(s2.second==v)
			return {s1.second,s2.first};
	} else if(s1.second==u) {
		if(s2.first==v)
			return {s1.first,s2.second};
		if(s2.second==v)
			return {s1.first,s2.first};
	}
	return {-1,-1};
}

void merge(int u,int v,int w,int rootU,int rootV) {
	if(S[u].size()<S[v].size()) {
		swap(u,v);
		swap(rootU,rootV);
	}
	P[v]=u;
	segs[u]=getNewSeg(segs[u],segs[v],rootU,rootV);
	bool newIsLine=(segs[u].first!=-1);
	if(isLine[u]!=newIsLine) {
		isLine[u]=false;
		for(int tmp:S[u])
			history[tmp].push_back({w,u});
	}
	while(S[v].size()>0) {
		int tmp=S[v].back();
		S[v].pop_back();
		S[u].push_back(tmp);
		if(!newIsLine)
			history[tmp].push_back({w,u});
	}
}

void init(int N, int M,
          std::vector<int> U, std::vector<int> V, std::vector<int> W) {
	for(int i=0;i<M;i++)
		edges.push_back({W[i],{U[i],V[i]}});
	sort(edges.begin(),edges.end());
	for(int i=0;i<N;i++) {
		P[i]=i;
		isLine[i]=true;
		segs[i]={i,i};
		S[i].push_back(i);
	}
	for(iii edge:edges) {
		int u=find(edge.second.first),v=find(edge.second.second),w=edge.first;
		if(u!=v)
			merge(u,v,w,edge.second.first,edge.second.second);
		else if(isLine[u]) {
			isLine[u]=false;
			segs[u]={-1,-1};
			for(int tmp:S[u])
				history[tmp].push_back({w,u});
		}
	}
}

int getMinimumFuelCapacity(int X, int Y) {
	vector<ii> hisX=history[X],hisY=history[Y];
	int rs=-1;
	while(hisX.size()>0&&hisY.size()>0&&hisX.back().second==hisY.back().second) {
		rs=max(hisX.back().first,hisY.back().first);
		hisX.pop_back(),hisY.pop_back();
	}
	return rs;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 4 ms 4928 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 4972 KB Output is correct
5 Correct 4 ms 5068 KB Output is correct
6 Correct 4 ms 5068 KB Output is correct
7 Correct 4 ms 5068 KB Output is correct
8 Correct 4 ms 5068 KB Output is correct
9 Correct 64 ms 14520 KB Output is correct
10 Correct 82 ms 16184 KB Output is correct
11 Correct 72 ms 16096 KB Output is correct
12 Correct 79 ms 16788 KB Output is correct
13 Correct 63 ms 14136 KB Output is correct
14 Correct 70 ms 14492 KB Output is correct
15 Correct 158 ms 18556 KB Output is correct
16 Correct 145 ms 18068 KB Output is correct
17 Correct 152 ms 18720 KB Output is correct
18 Correct 133 ms 15776 KB Output is correct
19 Correct 76 ms 10504 KB Output is correct
20 Correct 193 ms 21244 KB Output is correct
21 Correct 173 ms 20976 KB Output is correct
22 Correct 202 ms 21908 KB Output is correct
23 Correct 168 ms 19896 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 4 ms 4928 KB Output is correct
3 Correct 175 ms 18816 KB Output is correct
4 Correct 196 ms 19340 KB Output is correct
5 Correct 186 ms 19196 KB Output is correct
6 Correct 168 ms 19160 KB Output is correct
7 Correct 197 ms 19328 KB Output is correct
8 Correct 173 ms 18812 KB Output is correct
9 Correct 190 ms 19068 KB Output is correct
10 Correct 193 ms 18692 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 4 ms 4928 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 4972 KB Output is correct
5 Correct 4 ms 5068 KB Output is correct
6 Correct 4 ms 5068 KB Output is correct
7 Correct 4 ms 5068 KB Output is correct
8 Correct 4 ms 5068 KB Output is correct
9 Correct 3 ms 4940 KB Output is correct
10 Correct 4 ms 5068 KB Output is correct
11 Correct 4 ms 5068 KB Output is correct
12 Correct 4 ms 5068 KB Output is correct
13 Correct 5 ms 5068 KB Output is correct
14 Correct 5 ms 5068 KB Output is correct
15 Correct 4 ms 5068 KB Output is correct
16 Correct 4 ms 5068 KB Output is correct
17 Correct 4 ms 5068 KB Output is correct
18 Correct 5 ms 5068 KB Output is correct
19 Correct 4 ms 5068 KB Output is correct
20 Correct 4 ms 5068 KB Output is correct
21 Correct 4 ms 5068 KB Output is correct
22 Correct 4 ms 5068 KB Output is correct
23 Correct 3 ms 5068 KB Output is correct
24 Correct 5 ms 5104 KB Output is correct
25 Correct 6 ms 5068 KB Output is correct
26 Correct 5 ms 5068 KB Output is correct
27 Correct 4 ms 5068 KB Output is correct
28 Correct 4 ms 5068 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 4 ms 4928 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 3 ms 4972 KB Output is correct
6 Correct 4 ms 5068 KB Output is correct
7 Correct 4 ms 5068 KB Output is correct
8 Correct 4 ms 5068 KB Output is correct
9 Correct 4 ms 5068 KB Output is correct
10 Correct 64 ms 14520 KB Output is correct
11 Correct 82 ms 16184 KB Output is correct
12 Correct 72 ms 16096 KB Output is correct
13 Correct 79 ms 16788 KB Output is correct
14 Correct 63 ms 14136 KB Output is correct
15 Correct 4 ms 5068 KB Output is correct
16 Correct 4 ms 5068 KB Output is correct
17 Correct 4 ms 5068 KB Output is correct
18 Correct 5 ms 5068 KB Output is correct
19 Correct 5 ms 5068 KB Output is correct
20 Correct 4 ms 5068 KB Output is correct
21 Correct 4 ms 5068 KB Output is correct
22 Correct 4 ms 5068 KB Output is correct
23 Correct 5 ms 5068 KB Output is correct
24 Correct 4 ms 5068 KB Output is correct
25 Correct 4 ms 5068 KB Output is correct
26 Correct 4 ms 5068 KB Output is correct
27 Correct 4 ms 5068 KB Output is correct
28 Correct 3 ms 5068 KB Output is correct
29 Correct 5 ms 5104 KB Output is correct
30 Correct 6 ms 5068 KB Output is correct
31 Correct 5 ms 5068 KB Output is correct
32 Correct 4 ms 5068 KB Output is correct
33 Correct 4 ms 5068 KB Output is correct
34 Correct 15 ms 7052 KB Output is correct
35 Correct 121 ms 18640 KB Output is correct
36 Correct 144 ms 18712 KB Output is correct
37 Correct 140 ms 19404 KB Output is correct
38 Correct 115 ms 19344 KB Output is correct
39 Correct 126 ms 20256 KB Output is correct
40 Correct 123 ms 19432 KB Output is correct
41 Correct 107 ms 18964 KB Output is correct
42 Correct 103 ms 18728 KB Output is correct
43 Correct 94 ms 16828 KB Output is correct
44 Correct 143 ms 21060 KB Output is correct
45 Correct 121 ms 16976 KB Output is correct
46 Correct 105 ms 18576 KB Output is correct
47 Correct 113 ms 17812 KB Output is correct
48 Correct 140 ms 17160 KB Output is correct
49 Correct 69 ms 11828 KB Output is correct
50 Correct 57 ms 9864 KB Output is correct
51 Correct 101 ms 14940 KB Output is correct
52 Correct 155 ms 20700 KB Output is correct
53 Correct 261 ms 21932 KB Output is correct
54 Correct 148 ms 22424 KB Output is correct
55 Correct 92 ms 16788 KB Output is correct
56 Correct 194 ms 19788 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 4 ms 4928 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 4972 KB Output is correct
5 Correct 4 ms 5068 KB Output is correct
6 Correct 4 ms 5068 KB Output is correct
7 Correct 4 ms 5068 KB Output is correct
8 Correct 4 ms 5068 KB Output is correct
9 Correct 64 ms 14520 KB Output is correct
10 Correct 82 ms 16184 KB Output is correct
11 Correct 72 ms 16096 KB Output is correct
12 Correct 79 ms 16788 KB Output is correct
13 Correct 63 ms 14136 KB Output is correct
14 Correct 70 ms 14492 KB Output is correct
15 Correct 158 ms 18556 KB Output is correct
16 Correct 145 ms 18068 KB Output is correct
17 Correct 152 ms 18720 KB Output is correct
18 Correct 133 ms 15776 KB Output is correct
19 Correct 175 ms 18816 KB Output is correct
20 Correct 196 ms 19340 KB Output is correct
21 Correct 186 ms 19196 KB Output is correct
22 Correct 168 ms 19160 KB Output is correct
23 Correct 197 ms 19328 KB Output is correct
24 Correct 173 ms 18812 KB Output is correct
25 Correct 190 ms 19068 KB Output is correct
26 Correct 193 ms 18692 KB Output is correct
27 Correct 4 ms 5068 KB Output is correct
28 Correct 4 ms 5068 KB Output is correct
29 Correct 4 ms 5068 KB Output is correct
30 Correct 5 ms 5068 KB Output is correct
31 Correct 5 ms 5068 KB Output is correct
32 Correct 4 ms 5068 KB Output is correct
33 Correct 4 ms 5068 KB Output is correct
34 Correct 4 ms 5068 KB Output is correct
35 Correct 5 ms 5068 KB Output is correct
36 Correct 15 ms 7052 KB Output is correct
37 Correct 121 ms 18640 KB Output is correct
38 Correct 144 ms 18712 KB Output is correct
39 Correct 140 ms 19404 KB Output is correct
40 Correct 115 ms 19344 KB Output is correct
41 Correct 126 ms 20256 KB Output is correct
42 Correct 123 ms 19432 KB Output is correct
43 Correct 107 ms 18964 KB Output is correct
44 Correct 103 ms 18728 KB Output is correct
45 Correct 94 ms 16828 KB Output is correct
46 Correct 143 ms 21060 KB Output is correct
47 Correct 23 ms 7256 KB Output is correct
48 Correct 197 ms 21280 KB Output is correct
49 Correct 202 ms 21408 KB Output is correct
50 Correct 224 ms 22016 KB Output is correct
51 Correct 215 ms 22392 KB Output is correct
52 Correct 284 ms 22064 KB Output is correct
53 Correct 170 ms 19116 KB Output is correct
54 Correct 187 ms 21884 KB Output is correct
55 Correct 186 ms 21388 KB Output is correct
56 Correct 225 ms 19416 KB Output is correct
57 Correct 247 ms 23968 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 4 ms 4928 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 3 ms 4972 KB Output is correct
6 Correct 4 ms 5068 KB Output is correct
7 Correct 4 ms 5068 KB Output is correct
8 Correct 4 ms 5068 KB Output is correct
9 Correct 4 ms 5068 KB Output is correct
10 Correct 64 ms 14520 KB Output is correct
11 Correct 82 ms 16184 KB Output is correct
12 Correct 72 ms 16096 KB Output is correct
13 Correct 79 ms 16788 KB Output is correct
14 Correct 63 ms 14136 KB Output is correct
15 Correct 70 ms 14492 KB Output is correct
16 Correct 158 ms 18556 KB Output is correct
17 Correct 145 ms 18068 KB Output is correct
18 Correct 152 ms 18720 KB Output is correct
19 Correct 133 ms 15776 KB Output is correct
20 Correct 175 ms 18816 KB Output is correct
21 Correct 196 ms 19340 KB Output is correct
22 Correct 186 ms 19196 KB Output is correct
23 Correct 168 ms 19160 KB Output is correct
24 Correct 197 ms 19328 KB Output is correct
25 Correct 173 ms 18812 KB Output is correct
26 Correct 190 ms 19068 KB Output is correct
27 Correct 193 ms 18692 KB Output is correct
28 Correct 4 ms 5068 KB Output is correct
29 Correct 4 ms 5068 KB Output is correct
30 Correct 4 ms 5068 KB Output is correct
31 Correct 5 ms 5068 KB Output is correct
32 Correct 5 ms 5068 KB Output is correct
33 Correct 4 ms 5068 KB Output is correct
34 Correct 4 ms 5068 KB Output is correct
35 Correct 4 ms 5068 KB Output is correct
36 Correct 5 ms 5068 KB Output is correct
37 Correct 15 ms 7052 KB Output is correct
38 Correct 121 ms 18640 KB Output is correct
39 Correct 144 ms 18712 KB Output is correct
40 Correct 140 ms 19404 KB Output is correct
41 Correct 115 ms 19344 KB Output is correct
42 Correct 126 ms 20256 KB Output is correct
43 Correct 123 ms 19432 KB Output is correct
44 Correct 107 ms 18964 KB Output is correct
45 Correct 103 ms 18728 KB Output is correct
46 Correct 94 ms 16828 KB Output is correct
47 Correct 143 ms 21060 KB Output is correct
48 Correct 23 ms 7256 KB Output is correct
49 Correct 197 ms 21280 KB Output is correct
50 Correct 202 ms 21408 KB Output is correct
51 Correct 224 ms 22016 KB Output is correct
52 Correct 215 ms 22392 KB Output is correct
53 Correct 284 ms 22064 KB Output is correct
54 Correct 170 ms 19116 KB Output is correct
55 Correct 187 ms 21884 KB Output is correct
56 Correct 186 ms 21388 KB Output is correct
57 Correct 225 ms 19416 KB Output is correct
58 Correct 247 ms 23968 KB Output is correct
59 Correct 76 ms 10504 KB Output is correct
60 Correct 193 ms 21244 KB Output is correct
61 Correct 173 ms 20976 KB Output is correct
62 Correct 202 ms 21908 KB Output is correct
63 Correct 168 ms 19896 KB Output is correct
64 Correct 4 ms 5068 KB Output is correct
65 Correct 4 ms 5068 KB Output is correct
66 Correct 4 ms 5068 KB Output is correct
67 Correct 4 ms 5068 KB Output is correct
68 Correct 3 ms 5068 KB Output is correct
69 Correct 5 ms 5104 KB Output is correct
70 Correct 6 ms 5068 KB Output is correct
71 Correct 5 ms 5068 KB Output is correct
72 Correct 4 ms 5068 KB Output is correct
73 Correct 4 ms 5068 KB Output is correct
74 Correct 121 ms 16976 KB Output is correct
75 Correct 105 ms 18576 KB Output is correct
76 Correct 113 ms 17812 KB Output is correct
77 Correct 140 ms 17160 KB Output is correct
78 Correct 69 ms 11828 KB Output is correct
79 Correct 57 ms 9864 KB Output is correct
80 Correct 101 ms 14940 KB Output is correct
81 Correct 155 ms 20700 KB Output is correct
82 Correct 261 ms 21932 KB Output is correct
83 Correct 148 ms 22424 KB Output is correct
84 Correct 92 ms 16788 KB Output is correct
85 Correct 194 ms 19788 KB Output is correct
86 Correct 74 ms 9856 KB Output is correct
87 Correct 236 ms 20984 KB Output is correct
88 Correct 201 ms 21532 KB Output is correct
89 Correct 205 ms 19224 KB Output is correct
90 Correct 168 ms 13644 KB Output is correct
91 Correct 150 ms 13688 KB Output is correct
92 Correct 182 ms 17720 KB Output is correct
93 Correct 237 ms 22904 KB Output is correct
94 Correct 265 ms 24080 KB Output is correct
95 Correct 241 ms 24232 KB Output is correct
96 Correct 191 ms 19560 KB Output is correct
97 Correct 225 ms 21356 KB Output is correct