oj.uz

Submission #594899

# Submission time Handle Problem Language Result Execution time Memory
594899 2022-07-13T06:40:49 Z penguinhacker Swapping Cities (APIO20_swap) C++17
100 / 100
 336 ms 41300 KB 
#include "swap.h"
#include <bits/stdc++.h>
using namespace std;

#define ar array

const int mxN=1e5, mxM=2e5;
int n, m, p[2*mxN], anc[2*mxN][18], first[2*mxN], n2, d[2*mxN], ew[2*mxN], epa[2*mxN], epb[2*mxN];
ar<int, 3> e[mxM];
vector<int> adj[2*mxN];

int find(int i) {
	return i^p[i]?p[i]=find(p[i]):i;
}

void dfs(int u) {
	for (int v : adj[u]) {
		d[v]=d[u]+1;
		if (ew[u]!=-1&&(ew[v]==-1||ew[u]<ew[v]))
			ew[v]=ew[u];
		dfs(v);
	}
}

void init(int N, int M, vector<int> U, vector<int> V, vector<int> W) {
	n=N, m=M, n2=n;
	for (int i=0; i<m; ++i)
		e[i]={W[i], U[i], V[i]};
	sort(e, e+m);
	iota(p, p+2*n, 0);
	memset(anc, -1, sizeof(anc));
	memset(first, -1, sizeof(first));
	for (int i=0; i<n; ++i)
		epa[i]=epb[i]=i;
	for (int i=0; i<m; ++i) {
		int u=find(e[i][1]), v=find(e[i][2]);
		if (u!=v) {
			p[u]=p[v]=anc[u][0]=anc[v][0]=n2;
			first[n2]=first[v]==-1||first[u]!=-1&&first[u]<first[v]?first[u]:first[v];
			if (first[n2]==-1) {
				if (epa[u]!=e[i][1]&&epb[u]!=e[i][1]||epa[v]!=e[i][2]&&epb[v]!=e[i][2])
					first[n2]=e[i][0];
				else {
					epa[n2]=epa[u]^epb[u]^e[i][1];
					epb[n2]=epa[v]^epb[v]^e[i][2];
					//cout << epa[u] << " " << epb[u] << " " << epa[v] << " " << epb[v] << " " << e[i][1] << " " << e[i][2] << " " << epa[n2] << " " << epb[n2] << endl;
				}
			}
			ew[n2]=e[i][0];
			adj[n2].push_back(u);
			adj[n2].push_back(v);
			++n2;
		} else if (first[u]==-1)
			first[u]=e[i][0];
	}
	assert(n2==2*n-1);
	for (int j=1; j<18; ++j)
		for (int i=0; i<n2; ++i)
			anc[i][j]=anc[i][j-1]^-1?anc[anc[i][j-1]][j-1]:-1;
	//for (int i=0; i<n2; ++i)
	//	cout << epa[i] << " " << epb[i] << " " << first[i] << endl;
	for (int i=n; i<n2; ++i) {
		ew[i]=first[i]^-1?max(ew[i], first[i]):-1;
		//cout << i << " " << ew[i] << endl;
	}
	dfs(n2-1);
	//for (int i=n; i<n2; ++i)
	//	cout << i << " " << ew[i] << endl;
}

int lca(int u, int v) {
	if (d[u]>d[v])
		swap(u, v);
	for (int i=17; ~i; --i)
		if (d[v]-(1<<i)>=d[u])
			v=anc[v][i];
	if (u==v)
		return u;
	for (int i=17; ~i; --i)
		if (anc[u][i]!=anc[v][i])
			u=anc[u][i], v=anc[v][i];
	return anc[u][0];
}

int getMinimumFuelCapacity(int u, int v) {
	return ew[lca(u, v)];
}

Compilation message

swap.cpp: In function 'void init(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
swap.cpp:39:40: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   39 |    first[n2]=first[v]==-1||first[u]!=-1&&first[u]<first[v]?first[u]:first[v];
      |                            ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
swap.cpp:41:24: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   41 |     if (epa[u]!=e[i][1]&&epb[u]!=e[i][1]||epa[v]!=e[i][2]&&epb[v]!=e[i][2])

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 19796 KB Output is correct
2 Correct 9 ms 19796 KB Output is correct
3 Correct 9 ms 19796 KB Output is correct
4 Correct 12 ms 19924 KB Output is correct
5 Correct 9 ms 19996 KB Output is correct
6 Correct 12 ms 20052 KB Output is correct
7 Correct 9 ms 19924 KB Output is correct
8 Correct 9 ms 19924 KB Output is correct
9 Correct 96 ms 27824 KB Output is correct
10 Correct 111 ms 29640 KB Output is correct
11 Correct 98 ms 29412 KB Output is correct
12 Correct 110 ms 30048 KB Output is correct
13 Correct 100 ms 32352 KB Output is correct
14 Correct 111 ms 27960 KB Output is correct
15 Correct 222 ms 31512 KB Output is correct
16 Correct 207 ms 31232 KB Output is correct
17 Correct 224 ms 31740 KB Output is correct
18 Correct 298 ms 34180 KB Output is correct
19 Correct 78 ms 24888 KB Output is correct
20 Correct 197 ms 32656 KB Output is correct
21 Correct 200 ms 32528 KB Output is correct
22 Correct 221 ms 33124 KB Output is correct
23 Correct 260 ms 35580 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 19796 KB Output is correct
2 Correct 9 ms 19796 KB Output is correct
3 Correct 311 ms 36148 KB Output is correct
4 Correct 244 ms 40652 KB Output is correct
5 Correct 251 ms 40576 KB Output is correct
6 Correct 273 ms 40624 KB Output is correct
7 Correct 336 ms 40680 KB Output is correct
8 Correct 270 ms 39936 KB Output is correct
9 Correct 243 ms 40392 KB Output is correct
10 Correct 260 ms 39932 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 19796 KB Output is correct
2 Correct 9 ms 19796 KB Output is correct
3 Correct 9 ms 19796 KB Output is correct
4 Correct 12 ms 19924 KB Output is correct
5 Correct 9 ms 19996 KB Output is correct
6 Correct 12 ms 20052 KB Output is correct
7 Correct 9 ms 19924 KB Output is correct
8 Correct 9 ms 19924 KB Output is correct
9 Correct 9 ms 19852 KB Output is correct
10 Correct 10 ms 19924 KB Output is correct
11 Correct 10 ms 19924 KB Output is correct
12 Correct 9 ms 19944 KB Output is correct
13 Correct 10 ms 19924 KB Output is correct
14 Correct 9 ms 20000 KB Output is correct
15 Correct 11 ms 19924 KB Output is correct
16 Correct 10 ms 19924 KB Output is correct
17 Correct 9 ms 19924 KB Output is correct
18 Correct 11 ms 19924 KB Output is correct
19 Correct 10 ms 20004 KB Output is correct
20 Correct 10 ms 19940 KB Output is correct
21 Correct 10 ms 20000 KB Output is correct
22 Correct 9 ms 20004 KB Output is correct
23 Correct 9 ms 19924 KB Output is correct
24 Correct 10 ms 19996 KB Output is correct
25 Correct 11 ms 20052 KB Output is correct
26 Correct 10 ms 20052 KB Output is correct
27 Correct 9 ms 20000 KB Output is correct
28 Correct 10 ms 20012 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 19852 KB Output is correct
2 Correct 9 ms 19796 KB Output is correct
3 Correct 9 ms 19796 KB Output is correct
4 Correct 9 ms 19796 KB Output is correct
5 Correct 12 ms 19924 KB Output is correct
6 Correct 9 ms 19996 KB Output is correct
7 Correct 12 ms 20052 KB Output is correct
8 Correct 9 ms 19924 KB Output is correct
9 Correct 9 ms 19924 KB Output is correct
10 Correct 96 ms 27824 KB Output is correct
11 Correct 111 ms 29640 KB Output is correct
12 Correct 98 ms 29412 KB Output is correct
13 Correct 110 ms 30048 KB Output is correct
14 Correct 100 ms 32352 KB Output is correct
15 Correct 10 ms 19924 KB Output is correct
16 Correct 10 ms 19924 KB Output is correct
17 Correct 9 ms 19944 KB Output is correct
18 Correct 10 ms 19924 KB Output is correct
19 Correct 9 ms 20000 KB Output is correct
20 Correct 11 ms 19924 KB Output is correct
21 Correct 10 ms 19924 KB Output is correct
22 Correct 9 ms 19924 KB Output is correct
23 Correct 11 ms 19924 KB Output is correct
24 Correct 10 ms 20004 KB Output is correct
25 Correct 10 ms 19940 KB Output is correct
26 Correct 10 ms 20000 KB Output is correct
27 Correct 9 ms 20004 KB Output is correct
28 Correct 9 ms 19924 KB Output is correct
29 Correct 10 ms 19996 KB Output is correct
30 Correct 11 ms 20052 KB Output is correct
31 Correct 10 ms 20052 KB Output is correct
32 Correct 9 ms 20000 KB Output is correct
33 Correct 10 ms 20012 KB Output is correct
34 Correct 17 ms 21456 KB Output is correct
35 Correct 104 ms 31972 KB Output is correct
36 Correct 107 ms 31880 KB Output is correct
37 Correct 124 ms 31820 KB Output is correct
38 Correct 102 ms 31628 KB Output is correct
39 Correct 105 ms 31656 KB Output is correct
40 Correct 110 ms 30620 KB Output is correct
41 Correct 128 ms 32152 KB Output is correct
42 Correct 104 ms 31880 KB Output is correct
43 Correct 99 ms 35016 KB Output is correct
44 Correct 114 ms 32212 KB Output is correct
45 Correct 115 ms 34556 KB Output is correct
46 Correct 125 ms 31876 KB Output is correct
47 Correct 110 ms 31820 KB Output is correct
48 Correct 107 ms 33496 KB Output is correct
49 Correct 63 ms 28240 KB Output is correct
50 Correct 54 ms 27136 KB Output is correct
51 Correct 90 ms 32228 KB Output is correct
52 Correct 159 ms 35568 KB Output is correct
53 Correct 170 ms 36868 KB Output is correct
54 Correct 144 ms 37484 KB Output is correct
55 Correct 120 ms 34688 KB Output is correct
56 Correct 157 ms 37628 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 19796 KB Output is correct
2 Correct 9 ms 19796 KB Output is correct
3 Correct 9 ms 19796 KB Output is correct
4 Correct 12 ms 19924 KB Output is correct
5 Correct 9 ms 19996 KB Output is correct
6 Correct 12 ms 20052 KB Output is correct
7 Correct 9 ms 19924 KB Output is correct
8 Correct 9 ms 19924 KB Output is correct
9 Correct 96 ms 27824 KB Output is correct
10 Correct 111 ms 29640 KB Output is correct
11 Correct 98 ms 29412 KB Output is correct
12 Correct 110 ms 30048 KB Output is correct
13 Correct 100 ms 32352 KB Output is correct
14 Correct 111 ms 27960 KB Output is correct
15 Correct 222 ms 31512 KB Output is correct
16 Correct 207 ms 31232 KB Output is correct
17 Correct 224 ms 31740 KB Output is correct
18 Correct 298 ms 34180 KB Output is correct
19 Correct 311 ms 36148 KB Output is correct
20 Correct 244 ms 40652 KB Output is correct
21 Correct 251 ms 40576 KB Output is correct
22 Correct 273 ms 40624 KB Output is correct
23 Correct 336 ms 40680 KB Output is correct
24 Correct 270 ms 39936 KB Output is correct
25 Correct 243 ms 40392 KB Output is correct
26 Correct 260 ms 39932 KB Output is correct
27 Correct 10 ms 19924 KB Output is correct
28 Correct 10 ms 19924 KB Output is correct
29 Correct 9 ms 19944 KB Output is correct
30 Correct 10 ms 19924 KB Output is correct
31 Correct 9 ms 20000 KB Output is correct
32 Correct 11 ms 19924 KB Output is correct
33 Correct 10 ms 19924 KB Output is correct
34 Correct 9 ms 19924 KB Output is correct
35 Correct 11 ms 19924 KB Output is correct
36 Correct 17 ms 21456 KB Output is correct
37 Correct 104 ms 31972 KB Output is correct
38 Correct 107 ms 31880 KB Output is correct
39 Correct 124 ms 31820 KB Output is correct
40 Correct 102 ms 31628 KB Output is correct
41 Correct 105 ms 31656 KB Output is correct
42 Correct 110 ms 30620 KB Output is correct
43 Correct 128 ms 32152 KB Output is correct
44 Correct 104 ms 31880 KB Output is correct
45 Correct 99 ms 35016 KB Output is correct
46 Correct 114 ms 32212 KB Output is correct
47 Correct 27 ms 21872 KB Output is correct
48 Correct 200 ms 36748 KB Output is correct
49 Correct 202 ms 36892 KB Output is correct
50 Correct 210 ms 36728 KB Output is correct
51 Correct 193 ms 36700 KB Output is correct
52 Correct 196 ms 36064 KB Output is correct
53 Correct 165 ms 33836 KB Output is correct
54 Correct 213 ms 37652 KB Output is correct
55 Correct 217 ms 36768 KB Output is correct
56 Correct 273 ms 39092 KB Output is correct
57 Correct 207 ms 37640 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 19852 KB Output is correct
2 Correct 9 ms 19796 KB Output is correct
3 Correct 9 ms 19796 KB Output is correct
4 Correct 9 ms 19796 KB Output is correct
5 Correct 12 ms 19924 KB Output is correct
6 Correct 9 ms 19996 KB Output is correct
7 Correct 12 ms 20052 KB Output is correct
8 Correct 9 ms 19924 KB Output is correct
9 Correct 9 ms 19924 KB Output is correct
10 Correct 96 ms 27824 KB Output is correct
11 Correct 111 ms 29640 KB Output is correct
12 Correct 98 ms 29412 KB Output is correct
13 Correct 110 ms 30048 KB Output is correct
14 Correct 100 ms 32352 KB Output is correct
15 Correct 111 ms 27960 KB Output is correct
16 Correct 222 ms 31512 KB Output is correct
17 Correct 207 ms 31232 KB Output is correct
18 Correct 224 ms 31740 KB Output is correct
19 Correct 298 ms 34180 KB Output is correct
20 Correct 311 ms 36148 KB Output is correct
21 Correct 244 ms 40652 KB Output is correct
22 Correct 251 ms 40576 KB Output is correct
23 Correct 273 ms 40624 KB Output is correct
24 Correct 336 ms 40680 KB Output is correct
25 Correct 270 ms 39936 KB Output is correct
26 Correct 243 ms 40392 KB Output is correct
27 Correct 260 ms 39932 KB Output is correct
28 Correct 10 ms 19924 KB Output is correct
29 Correct 10 ms 19924 KB Output is correct
30 Correct 9 ms 19944 KB Output is correct
31 Correct 10 ms 19924 KB Output is correct
32 Correct 9 ms 20000 KB Output is correct
33 Correct 11 ms 19924 KB Output is correct
34 Correct 10 ms 19924 KB Output is correct
35 Correct 9 ms 19924 KB Output is correct
36 Correct 11 ms 19924 KB Output is correct
37 Correct 17 ms 21456 KB Output is correct
38 Correct 104 ms 31972 KB Output is correct
39 Correct 107 ms 31880 KB Output is correct
40 Correct 124 ms 31820 KB Output is correct
41 Correct 102 ms 31628 KB Output is correct
42 Correct 105 ms 31656 KB Output is correct
43 Correct 110 ms 30620 KB Output is correct
44 Correct 128 ms 32152 KB Output is correct
45 Correct 104 ms 31880 KB Output is correct
46 Correct 99 ms 35016 KB Output is correct
47 Correct 114 ms 32212 KB Output is correct
48 Correct 27 ms 21872 KB Output is correct
49 Correct 200 ms 36748 KB Output is correct
50 Correct 202 ms 36892 KB Output is correct
51 Correct 210 ms 36728 KB Output is correct
52 Correct 193 ms 36700 KB Output is correct
53 Correct 196 ms 36064 KB Output is correct
54 Correct 165 ms 33836 KB Output is correct
55 Correct 213 ms 37652 KB Output is correct
56 Correct 217 ms 36768 KB Output is correct
57 Correct 273 ms 39092 KB Output is correct
58 Correct 207 ms 37640 KB Output is correct
59 Correct 78 ms 24888 KB Output is correct
60 Correct 197 ms 32656 KB Output is correct
61 Correct 200 ms 32528 KB Output is correct
62 Correct 221 ms 33124 KB Output is correct
63 Correct 260 ms 35580 KB Output is correct
64 Correct 10 ms 20004 KB Output is correct
65 Correct 10 ms 19940 KB Output is correct
66 Correct 10 ms 20000 KB Output is correct
67 Correct 9 ms 20004 KB Output is correct
68 Correct 9 ms 19924 KB Output is correct
69 Correct 10 ms 19996 KB Output is correct
70 Correct 11 ms 20052 KB Output is correct
71 Correct 10 ms 20052 KB Output is correct
72 Correct 9 ms 20000 KB Output is correct
73 Correct 10 ms 20012 KB Output is correct
74 Correct 115 ms 34556 KB Output is correct
75 Correct 125 ms 31876 KB Output is correct
76 Correct 110 ms 31820 KB Output is correct
77 Correct 107 ms 33496 KB Output is correct
78 Correct 63 ms 28240 KB Output is correct
79 Correct 54 ms 27136 KB Output is correct
80 Correct 90 ms 32228 KB Output is correct
81 Correct 159 ms 35568 KB Output is correct
82 Correct 170 ms 36868 KB Output is correct
83 Correct 144 ms 37484 KB Output is correct
84 Correct 120 ms 34688 KB Output is correct
85 Correct 157 ms 37628 KB Output is correct
86 Correct 73 ms 26248 KB Output is correct
87 Correct 206 ms 36752 KB Output is correct
88 Correct 214 ms 36728 KB Output is correct
89 Correct 237 ms 37628 KB Output is correct
90 Correct 140 ms 32668 KB Output is correct
91 Correct 152 ms 33332 KB Output is correct
92 Correct 210 ms 37176 KB Output is correct
93 Correct 233 ms 40312 KB Output is correct
94 Correct 291 ms 41300 KB Output is correct
95 Correct 237 ms 41272 KB Output is correct
96 Correct 318 ms 39452 KB Output is correct
97 Correct 269 ms 40600 KB Output is correct