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Submission #292514

# Submission time Handle Problem Language Result Execution time Memory
292514 2020-09-07T07:51:24 Z amoo_safar Swapping Cities (APIO20_swap) C++17
100 / 100
 425 ms 38376 KB 
#include "swap.h"
#include <bits/stdc++.h>

#define F first
#define S second
#define pb push_back
#define all(x) x.begin(), x.end()

using namespace std;

typedef pair<int, int> pii;

const int N = 3e5 + 10;
const int Log = 20;


vector<pair<int, pii>> E;

int sp[Log][N], dep[N], wp[N];
int par[N], gd[N], la;
int deg[N], n, m;

int Find(int u){
	if(par[u] == u) return u;
	return par[u] = Find(par[u]);
}
void Unite(int u, int v, int w){
	u = Find(u);
	v = Find(v);
	if(u == v){
		la ++;
		gd[la] = 1;
		par[u] = la;
		wp[u] = w;
		sp[0][u] = la;
		return ;
	}

	la ++;
	par[u] = la;
	par[v] = la;

	wp[u] = w;
	wp[v] = w;
	
	sp[0][u] = la;
	sp[0][v] = la;


	gd[la] = gd[v] | gd[u];
}

void init(int n2, int m2, vector<int> U, vector<int> V, vector<int> W) {
	n = n2;
	m = m2;
	for(int i = 0; i < m; i++)
		E.pb({W[i], {U[i], V[i]}});
	
	la = n - 1;
	sort(all(E));

	memset(gd, 0, sizeof gd);
	memset(deg, 0, sizeof deg);
	iota(par, par + N, 0);
	memset(sp, 0, sizeof sp);
	memset(wp, 0, sizeof wp);
	memset(dep, 0, sizeof dep);

	int u, v, w;
	for(auto ob : E){
		u = ob.S.F;
		v = ob.S.S;
		w = ob.F;
		Unite(u, v, w);
		deg[u] ++;
		deg[v] ++;
		if(max(deg[u], deg[v]) >= 3){
			gd[Find(u)] = 1;
		}
	}

	sp[0][la] = la;
	for(int l = 1; l < Log; l++)
		for(int i = 0; i <= la; i++)
			sp[l][i] = sp[l - 1][sp[l - 1][i]];

	dep[la] = 0;
	for(int i = la - 1; i >= 0; i--)
		dep[i] = dep[sp[0][i]] + 1;

}

int getMinimumFuelCapacity(int X, int Y){
	if(dep[X] < dep[Y]) swap(X, Y);
	//cerr << "! " << dep[X] << ' ' << dep[Y] << '\n';
	int h = dep[X] - dep[Y];
	for(int l = 0; l < Log; l++)
		if(h >> l & 1)
			X = sp[l][X];

	for(int l = Log - 1; l >= 0; l--){
		if((sp[l][X] != sp[l][Y]) || (gd[sp[l][X]] == 0)){
			X = sp[l][X];
			Y = sp[l][Y];
		}
	}
	//cerr << "# " << X << ' ' << Y << '\n';
	int res = max(wp[X], wp[Y]);
	X = sp[0][X];
	Y = sp[0][Y];
	if((X != Y) || (gd[X] == 0))
		return -1;
	return res;
}
/*
5 6
0 1 4
0 2 4
1 2 1
1 3 2
1 4 10
2 3 3
3
1 2
2 4
0 1

*/

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 29696 KB Output is correct
2 Correct 16 ms 29696 KB Output is correct
3 Correct 17 ms 29696 KB Output is correct
4 Correct 16 ms 29696 KB Output is correct
5 Correct 17 ms 29696 KB Output is correct
6 Correct 18 ms 29688 KB Output is correct
7 Correct 18 ms 29696 KB Output is correct
8 Correct 19 ms 29696 KB Output is correct
9 Correct 71 ms 32624 KB Output is correct
10 Correct 86 ms 33132 KB Output is correct
11 Correct 87 ms 33168 KB Output is correct
12 Correct 93 ms 33388 KB Output is correct
13 Correct 100 ms 34152 KB Output is correct
14 Correct 84 ms 32748 KB Output is correct
15 Correct 197 ms 35064 KB Output is correct
16 Correct 200 ms 34972 KB Output is correct
17 Correct 205 ms 35156 KB Output is correct
18 Correct 282 ms 35924 KB Output is correct
19 Correct 118 ms 33660 KB Output is correct
20 Correct 286 ms 36016 KB Output is correct
21 Correct 286 ms 36392 KB Output is correct
22 Correct 292 ms 36564 KB Output is correct
23 Correct 395 ms 37328 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 29696 KB Output is correct
2 Correct 16 ms 29696 KB Output is correct
3 Correct 374 ms 36080 KB Output is correct
4 Correct 371 ms 35984 KB Output is correct
5 Correct 395 ms 36612 KB Output is correct
6 Correct 369 ms 36052 KB Output is correct
7 Correct 381 ms 36220 KB Output is correct
8 Correct 382 ms 36052 KB Output is correct
9 Correct 376 ms 36072 KB Output is correct
10 Correct 372 ms 36140 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 29696 KB Output is correct
2 Correct 18 ms 29696 KB Output is correct
3 Correct 16 ms 29696 KB Output is correct
4 Correct 17 ms 29696 KB Output is correct
5 Correct 16 ms 29696 KB Output is correct
6 Correct 17 ms 29696 KB Output is correct
7 Correct 18 ms 29688 KB Output is correct
8 Correct 18 ms 29696 KB Output is correct
9 Correct 19 ms 29696 KB Output is correct
10 Correct 18 ms 29696 KB Output is correct
11 Correct 17 ms 29696 KB Output is correct
12 Correct 17 ms 29696 KB Output is correct
13 Correct 18 ms 29696 KB Output is correct
14 Correct 16 ms 29696 KB Output is correct
15 Correct 17 ms 29696 KB Output is correct
16 Correct 18 ms 29696 KB Output is correct
17 Correct 17 ms 29696 KB Output is correct
18 Correct 17 ms 29696 KB Output is correct
19 Correct 19 ms 29688 KB Output is correct
20 Correct 17 ms 29696 KB Output is correct
21 Correct 17 ms 29696 KB Output is correct
22 Correct 17 ms 29696 KB Output is correct
23 Correct 16 ms 29760 KB Output is correct
24 Correct 18 ms 29696 KB Output is correct
25 Correct 17 ms 29696 KB Output is correct
26 Correct 21 ms 29696 KB Output is correct
27 Correct 17 ms 29696 KB Output is correct
28 Correct 17 ms 29696 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 29696 KB Output is correct
2 Correct 18 ms 29696 KB Output is correct
3 Correct 16 ms 29696 KB Output is correct
4 Correct 17 ms 29696 KB Output is correct
5 Correct 16 ms 29696 KB Output is correct
6 Correct 17 ms 29696 KB Output is correct
7 Correct 18 ms 29688 KB Output is correct
8 Correct 18 ms 29696 KB Output is correct
9 Correct 19 ms 29696 KB Output is correct
10 Correct 71 ms 32624 KB Output is correct
11 Correct 86 ms 33132 KB Output is correct
12 Correct 87 ms 33168 KB Output is correct
13 Correct 93 ms 33388 KB Output is correct
14 Correct 100 ms 34152 KB Output is correct
15 Correct 18 ms 29696 KB Output is correct
16 Correct 17 ms 29696 KB Output is correct
17 Correct 17 ms 29696 KB Output is correct
18 Correct 18 ms 29696 KB Output is correct
19 Correct 16 ms 29696 KB Output is correct
20 Correct 17 ms 29696 KB Output is correct
21 Correct 18 ms 29696 KB Output is correct
22 Correct 17 ms 29696 KB Output is correct
23 Correct 17 ms 29696 KB Output is correct
24 Correct 26 ms 30392 KB Output is correct
25 Correct 82 ms 33260 KB Output is correct
26 Correct 85 ms 33404 KB Output is correct
27 Correct 85 ms 33260 KB Output is correct
28 Correct 82 ms 33260 KB Output is correct
29 Correct 81 ms 33260 KB Output is correct
30 Correct 77 ms 33004 KB Output is correct
31 Correct 87 ms 33388 KB Output is correct
32 Correct 82 ms 33388 KB Output is correct
33 Correct 80 ms 33260 KB Output is correct
34 Correct 91 ms 33388 KB Output is correct
35 Correct 19 ms 29688 KB Output is correct
36 Correct 17 ms 29696 KB Output is correct
37 Correct 17 ms 29696 KB Output is correct
38 Correct 17 ms 29696 KB Output is correct
39 Correct 16 ms 29760 KB Output is correct
40 Correct 18 ms 29696 KB Output is correct
41 Correct 17 ms 29696 KB Output is correct
42 Correct 21 ms 29696 KB Output is correct
43 Correct 17 ms 29696 KB Output is correct
44 Correct 17 ms 29696 KB Output is correct
45 Correct 138 ms 34920 KB Output is correct
46 Correct 83 ms 33264 KB Output is correct
47 Correct 83 ms 33388 KB Output is correct
48 Correct 96 ms 33772 KB Output is correct
49 Correct 123 ms 35432 KB Output is correct
50 Correct 105 ms 34156 KB Output is correct
51 Correct 118 ms 34388 KB Output is correct
52 Correct 140 ms 35552 KB Output is correct
53 Correct 152 ms 36072 KB Output is correct
54 Correct 173 ms 36964 KB Output is correct
55 Correct 80 ms 33388 KB Output is correct
56 Correct 156 ms 35940 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 29696 KB Output is correct
2 Correct 16 ms 29696 KB Output is correct
3 Correct 17 ms 29696 KB Output is correct
4 Correct 16 ms 29696 KB Output is correct
5 Correct 17 ms 29696 KB Output is correct
6 Correct 18 ms 29688 KB Output is correct
7 Correct 18 ms 29696 KB Output is correct
8 Correct 19 ms 29696 KB Output is correct
9 Correct 71 ms 32624 KB Output is correct
10 Correct 86 ms 33132 KB Output is correct
11 Correct 87 ms 33168 KB Output is correct
12 Correct 93 ms 33388 KB Output is correct
13 Correct 100 ms 34152 KB Output is correct
14 Correct 84 ms 32748 KB Output is correct
15 Correct 197 ms 35064 KB Output is correct
16 Correct 200 ms 34972 KB Output is correct
17 Correct 205 ms 35156 KB Output is correct
18 Correct 282 ms 35924 KB Output is correct
19 Correct 374 ms 36080 KB Output is correct
20 Correct 371 ms 35984 KB Output is correct
21 Correct 395 ms 36612 KB Output is correct
22 Correct 369 ms 36052 KB Output is correct
23 Correct 381 ms 36220 KB Output is correct
24 Correct 382 ms 36052 KB Output is correct
25 Correct 376 ms 36072 KB Output is correct
26 Correct 372 ms 36140 KB Output is correct
27 Correct 18 ms 29696 KB Output is correct
28 Correct 17 ms 29696 KB Output is correct
29 Correct 17 ms 29696 KB Output is correct
30 Correct 18 ms 29696 KB Output is correct
31 Correct 16 ms 29696 KB Output is correct
32 Correct 17 ms 29696 KB Output is correct
33 Correct 18 ms 29696 KB Output is correct
34 Correct 17 ms 29696 KB Output is correct
35 Correct 17 ms 29696 KB Output is correct
36 Correct 26 ms 30392 KB Output is correct
37 Correct 82 ms 33260 KB Output is correct
38 Correct 85 ms 33404 KB Output is correct
39 Correct 85 ms 33260 KB Output is correct
40 Correct 82 ms 33260 KB Output is correct
41 Correct 81 ms 33260 KB Output is correct
42 Correct 77 ms 33004 KB Output is correct
43 Correct 87 ms 33388 KB Output is correct
44 Correct 82 ms 33388 KB Output is correct
45 Correct 80 ms 33260 KB Output is correct
46 Correct 91 ms 33388 KB Output is correct
47 Correct 37 ms 30504 KB Output is correct
48 Correct 287 ms 36176 KB Output is correct
49 Correct 291 ms 35924 KB Output is correct
50 Correct 294 ms 36052 KB Output is correct
51 Correct 290 ms 35932 KB Output is correct
52 Correct 275 ms 35736 KB Output is correct
53 Correct 251 ms 35808 KB Output is correct
54 Correct 292 ms 36692 KB Output is correct
55 Correct 291 ms 36052 KB Output is correct
56 Correct 402 ms 36056 KB Output is correct
57 Correct 310 ms 36564 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 29696 KB Output is correct
2 Correct 18 ms 29696 KB Output is correct
3 Correct 16 ms 29696 KB Output is correct
4 Correct 17 ms 29696 KB Output is correct
5 Correct 16 ms 29696 KB Output is correct
6 Correct 17 ms 29696 KB Output is correct
7 Correct 18 ms 29688 KB Output is correct
8 Correct 18 ms 29696 KB Output is correct
9 Correct 19 ms 29696 KB Output is correct
10 Correct 71 ms 32624 KB Output is correct
11 Correct 86 ms 33132 KB Output is correct
12 Correct 87 ms 33168 KB Output is correct
13 Correct 93 ms 33388 KB Output is correct
14 Correct 100 ms 34152 KB Output is correct
15 Correct 84 ms 32748 KB Output is correct
16 Correct 197 ms 35064 KB Output is correct
17 Correct 200 ms 34972 KB Output is correct
18 Correct 205 ms 35156 KB Output is correct
19 Correct 282 ms 35924 KB Output is correct
20 Correct 374 ms 36080 KB Output is correct
21 Correct 371 ms 35984 KB Output is correct
22 Correct 395 ms 36612 KB Output is correct
23 Correct 369 ms 36052 KB Output is correct
24 Correct 381 ms 36220 KB Output is correct
25 Correct 382 ms 36052 KB Output is correct
26 Correct 376 ms 36072 KB Output is correct
27 Correct 372 ms 36140 KB Output is correct
28 Correct 18 ms 29696 KB Output is correct
29 Correct 17 ms 29696 KB Output is correct
30 Correct 17 ms 29696 KB Output is correct
31 Correct 18 ms 29696 KB Output is correct
32 Correct 16 ms 29696 KB Output is correct
33 Correct 17 ms 29696 KB Output is correct
34 Correct 18 ms 29696 KB Output is correct
35 Correct 17 ms 29696 KB Output is correct
36 Correct 17 ms 29696 KB Output is correct
37 Correct 26 ms 30392 KB Output is correct
38 Correct 82 ms 33260 KB Output is correct
39 Correct 85 ms 33404 KB Output is correct
40 Correct 85 ms 33260 KB Output is correct
41 Correct 82 ms 33260 KB Output is correct
42 Correct 81 ms 33260 KB Output is correct
43 Correct 77 ms 33004 KB Output is correct
44 Correct 87 ms 33388 KB Output is correct
45 Correct 82 ms 33388 KB Output is correct
46 Correct 80 ms 33260 KB Output is correct
47 Correct 91 ms 33388 KB Output is correct
48 Correct 37 ms 30504 KB Output is correct
49 Correct 287 ms 36176 KB Output is correct
50 Correct 291 ms 35924 KB Output is correct
51 Correct 294 ms 36052 KB Output is correct
52 Correct 290 ms 35932 KB Output is correct
53 Correct 275 ms 35736 KB Output is correct
54 Correct 251 ms 35808 KB Output is correct
55 Correct 292 ms 36692 KB Output is correct
56 Correct 291 ms 36052 KB Output is correct
57 Correct 402 ms 36056 KB Output is correct
58 Correct 310 ms 36564 KB Output is correct
59 Correct 118 ms 33660 KB Output is correct
60 Correct 286 ms 36016 KB Output is correct
61 Correct 286 ms 36392 KB Output is correct
62 Correct 292 ms 36564 KB Output is correct
63 Correct 395 ms 37328 KB Output is correct
64 Correct 19 ms 29688 KB Output is correct
65 Correct 17 ms 29696 KB Output is correct
66 Correct 17 ms 29696 KB Output is correct
67 Correct 17 ms 29696 KB Output is correct
68 Correct 16 ms 29760 KB Output is correct
69 Correct 18 ms 29696 KB Output is correct
70 Correct 17 ms 29696 KB Output is correct
71 Correct 21 ms 29696 KB Output is correct
72 Correct 17 ms 29696 KB Output is correct
73 Correct 17 ms 29696 KB Output is correct
74 Correct 138 ms 34920 KB Output is correct
75 Correct 83 ms 33264 KB Output is correct
76 Correct 83 ms 33388 KB Output is correct
77 Correct 96 ms 33772 KB Output is correct
78 Correct 123 ms 35432 KB Output is correct
79 Correct 105 ms 34156 KB Output is correct
80 Correct 118 ms 34388 KB Output is correct
81 Correct 140 ms 35552 KB Output is correct
82 Correct 152 ms 36072 KB Output is correct
83 Correct 173 ms 36964 KB Output is correct
84 Correct 80 ms 33388 KB Output is correct
85 Correct 156 ms 35940 KB Output is correct
86 Correct 101 ms 31968 KB Output is correct
87 Correct 281 ms 36052 KB Output is correct
88 Correct 283 ms 35924 KB Output is correct
89 Correct 367 ms 36108 KB Output is correct
90 Correct 238 ms 37692 KB Output is correct
91 Correct 264 ms 37516 KB Output is correct
92 Correct 372 ms 37068 KB Output is correct
93 Correct 353 ms 37916 KB Output is correct
94 Correct 423 ms 38340 KB Output is correct
95 Correct 381 ms 38376 KB Output is correct
96 Correct 425 ms 36044 KB Output is correct
97 Correct 402 ms 37284 KB Output is correct