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Submission #394224

# Submission time Handle Problem Language Result Execution time Memory
394224 2021-04-26T07:27:31 Z two_sides Swapping Cities (APIO20_swap) C++17
100 / 100
 232 ms 19932 KB 
#include "swap.h"
#include <bits/stdc++.h>
 
using namespace std;
 
const int MAXN = 100005;
 
struct node {
    int endP[2], par, size, val;
} comp[MAXN];
 
int wpar[MAXN], depth[MAXN];
vector <int> adj[MAXN];
 
int root(int u) {
    while (comp[u].par >= 0) u = comp[u].par;
    return u;
}
 
bool join(int u, int v, int w) {
    int x = root(u), y = root(v);
    if (x == y) {
        if (comp[x].val < 0) comp[x].val = w;
        return false;
    }
    if (comp[x].size < comp[y].size) {
        swap(x, y); swap(u, v);
    }
    comp[x].size += comp[y].size; comp[y].par = x;
    wpar[y] = w; adj[x].push_back(y);
    if (comp[x].val < 0 && comp[y].val < 0 &&
    (u == comp[x].endP[0] || u == comp[x].endP[1]) &&
    (v == comp[y].endP[0] || v == comp[y].endP[1])) {
        if (u == comp[x].endP[0])
            comp[x].endP[0] = comp[x].endP[1];
        if (v == comp[y].endP[0])
            comp[x].endP[1] = comp[y].endP[1];
        else comp[x].endP[1] = comp[y].endP[0];
    } else if (comp[x].val < 0) comp[x].val = w;
    return true;
}
 
void DFS(int u) {
    for (int v : adj[u]) {
        depth[v] = depth[u] + 1; DFS(v);
    }
}
 
void init(int N, int M, vector <int> U,
vector <int> V, vector <int> W) {
    vector <int> sorted(M);
    iota(sorted.begin(), sorted.end(), 0);
    sort(sorted.begin(), sorted.end(),
    [&](int i, int j) {return W[i] < W[j];});
    for (int i = 0; i < N; i++) {
        comp[i].endP[0] = comp[i].endP[1] = i;
        comp[i].par = -1; comp[i].size = 1;
        comp[i].val = -1;
    }
    for (int i : sorted) join(U[i], V[i], W[i]);
    for (int i = 0; i < N; i++)
        if (comp[i].par < 0) DFS(i);
}
 
int getMinimumFuelCapacity(int u, int v) {
    if (root(u) != root(v)) return -1;
    int res = 0;
    while (u != v) {
        if (depth[u] < depth[v]) swap(u, v);
        res = max(res, wpar[u]); u = comp[u].par;
    }
    while (u >= 0 && comp[u].val < 0) {
        res = max(res, wpar[u]); u = comp[u].par;
    }
    if (u < 0) return -1;
    return max(res, comp[u].val);
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 3 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 51 ms 7932 KB Output is correct
10 Correct 62 ms 9152 KB Output is correct
11 Correct 62 ms 9016 KB Output is correct
12 Correct 70 ms 9460 KB Output is correct
13 Correct 54 ms 8536 KB Output is correct
14 Correct 63 ms 8040 KB Output is correct
15 Correct 168 ms 10724 KB Output is correct
16 Correct 169 ms 10740 KB Output is correct
17 Correct 161 ms 11128 KB Output is correct
18 Correct 140 ms 10220 KB Output is correct
19 Correct 79 ms 7156 KB Output is correct
20 Correct 159 ms 11740 KB Output is correct
21 Correct 163 ms 11792 KB Output is correct
22 Correct 177 ms 12144 KB Output is correct
23 Correct 143 ms 11492 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 117 ms 10948 KB Output is correct
4 Correct 122 ms 10988 KB Output is correct
5 Correct 122 ms 11224 KB Output is correct
6 Correct 116 ms 10960 KB Output is correct
7 Correct 122 ms 11196 KB Output is correct
8 Correct 119 ms 10984 KB Output is correct
9 Correct 120 ms 11068 KB Output is correct
10 Correct 117 ms 10984 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 3 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 3 ms 2636 KB Output is correct
11 Correct 2 ms 2636 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 2 ms 2636 KB Output is correct
15 Correct 2 ms 2640 KB Output is correct
16 Correct 2 ms 2636 KB Output is correct
17 Correct 2 ms 2636 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct
19 Correct 2 ms 2636 KB Output is correct
20 Correct 2 ms 2636 KB Output is correct
21 Correct 3 ms 2636 KB Output is correct
22 Correct 3 ms 2636 KB Output is correct
23 Correct 2 ms 2636 KB Output is correct
24 Correct 3 ms 2764 KB Output is correct
25 Correct 3 ms 2764 KB Output is correct
26 Correct 3 ms 2696 KB Output is correct
27 Correct 2 ms 2636 KB Output is correct
28 Correct 4 ms 2764 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 3 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 51 ms 7932 KB Output is correct
11 Correct 62 ms 9152 KB Output is correct
12 Correct 62 ms 9016 KB Output is correct
13 Correct 70 ms 9460 KB Output is correct
14 Correct 54 ms 8536 KB Output is correct
15 Correct 3 ms 2636 KB Output is correct
16 Correct 2 ms 2636 KB Output is correct
17 Correct 2 ms 2636 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct
19 Correct 2 ms 2636 KB Output is correct
20 Correct 2 ms 2640 KB Output is correct
21 Correct 2 ms 2636 KB Output is correct
22 Correct 2 ms 2636 KB Output is correct
23 Correct 2 ms 2636 KB Output is correct
24 Correct 2 ms 2636 KB Output is correct
25 Correct 2 ms 2636 KB Output is correct
26 Correct 3 ms 2636 KB Output is correct
27 Correct 3 ms 2636 KB Output is correct
28 Correct 2 ms 2636 KB Output is correct
29 Correct 3 ms 2764 KB Output is correct
30 Correct 3 ms 2764 KB Output is correct
31 Correct 3 ms 2696 KB Output is correct
32 Correct 2 ms 2636 KB Output is correct
33 Correct 4 ms 2764 KB Output is correct
34 Correct 10 ms 3804 KB Output is correct
35 Correct 65 ms 11232 KB Output is correct
36 Correct 66 ms 11204 KB Output is correct
37 Correct 68 ms 11204 KB Output is correct
38 Correct 80 ms 11104 KB Output is correct
39 Correct 65 ms 10968 KB Output is correct
40 Correct 60 ms 10236 KB Output is correct
41 Correct 75 ms 11576 KB Output is correct
42 Correct 77 ms 11256 KB Output is correct
43 Correct 54 ms 10428 KB Output is correct
44 Correct 70 ms 11320 KB Output is correct
45 Correct 90 ms 12736 KB Output is correct
46 Correct 70 ms 11236 KB Output is correct
47 Correct 74 ms 11244 KB Output is correct
48 Correct 85 ms 11564 KB Output is correct
49 Correct 77 ms 9760 KB Output is correct
50 Correct 63 ms 8540 KB Output is correct
51 Correct 81 ms 11312 KB Output is correct
52 Correct 137 ms 14536 KB Output is correct
53 Correct 119 ms 15252 KB Output is correct
54 Correct 134 ms 16112 KB Output is correct
55 Correct 54 ms 10524 KB Output is correct
56 Correct 113 ms 14832 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 3 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 51 ms 7932 KB Output is correct
10 Correct 62 ms 9152 KB Output is correct
11 Correct 62 ms 9016 KB Output is correct
12 Correct 70 ms 9460 KB Output is correct
13 Correct 54 ms 8536 KB Output is correct
14 Correct 63 ms 8040 KB Output is correct
15 Correct 168 ms 10724 KB Output is correct
16 Correct 169 ms 10740 KB Output is correct
17 Correct 161 ms 11128 KB Output is correct
18 Correct 140 ms 10220 KB Output is correct
19 Correct 117 ms 10948 KB Output is correct
20 Correct 122 ms 10988 KB Output is correct
21 Correct 122 ms 11224 KB Output is correct
22 Correct 116 ms 10960 KB Output is correct
23 Correct 122 ms 11196 KB Output is correct
24 Correct 119 ms 10984 KB Output is correct
25 Correct 120 ms 11068 KB Output is correct
26 Correct 117 ms 10984 KB Output is correct
27 Correct 3 ms 2636 KB Output is correct
28 Correct 2 ms 2636 KB Output is correct
29 Correct 2 ms 2636 KB Output is correct
30 Correct 2 ms 2636 KB Output is correct
31 Correct 2 ms 2636 KB Output is correct
32 Correct 2 ms 2640 KB Output is correct
33 Correct 2 ms 2636 KB Output is correct
34 Correct 2 ms 2636 KB Output is correct
35 Correct 2 ms 2636 KB Output is correct
36 Correct 10 ms 3804 KB Output is correct
37 Correct 65 ms 11232 KB Output is correct
38 Correct 66 ms 11204 KB Output is correct
39 Correct 68 ms 11204 KB Output is correct
40 Correct 80 ms 11104 KB Output is correct
41 Correct 65 ms 10968 KB Output is correct
42 Correct 60 ms 10236 KB Output is correct
43 Correct 75 ms 11576 KB Output is correct
44 Correct 77 ms 11256 KB Output is correct
45 Correct 54 ms 10428 KB Output is correct
46 Correct 70 ms 11320 KB Output is correct
47 Correct 18 ms 4204 KB Output is correct
48 Correct 166 ms 15712 KB Output is correct
49 Correct 163 ms 15692 KB Output is correct
50 Correct 164 ms 15788 KB Output is correct
51 Correct 165 ms 15664 KB Output is correct
52 Correct 156 ms 15148 KB Output is correct
53 Correct 134 ms 13932 KB Output is correct
54 Correct 174 ms 16572 KB Output is correct
55 Correct 167 ms 15680 KB Output is correct
56 Correct 158 ms 15004 KB Output is correct
57 Correct 163 ms 16416 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 3 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 51 ms 7932 KB Output is correct
11 Correct 62 ms 9152 KB Output is correct
12 Correct 62 ms 9016 KB Output is correct
13 Correct 70 ms 9460 KB Output is correct
14 Correct 54 ms 8536 KB Output is correct
15 Correct 63 ms 8040 KB Output is correct
16 Correct 168 ms 10724 KB Output is correct
17 Correct 169 ms 10740 KB Output is correct
18 Correct 161 ms 11128 KB Output is correct
19 Correct 140 ms 10220 KB Output is correct
20 Correct 117 ms 10948 KB Output is correct
21 Correct 122 ms 10988 KB Output is correct
22 Correct 122 ms 11224 KB Output is correct
23 Correct 116 ms 10960 KB Output is correct
24 Correct 122 ms 11196 KB Output is correct
25 Correct 119 ms 10984 KB Output is correct
26 Correct 120 ms 11068 KB Output is correct
27 Correct 117 ms 10984 KB Output is correct
28 Correct 3 ms 2636 KB Output is correct
29 Correct 2 ms 2636 KB Output is correct
30 Correct 2 ms 2636 KB Output is correct
31 Correct 2 ms 2636 KB Output is correct
32 Correct 2 ms 2636 KB Output is correct
33 Correct 2 ms 2640 KB Output is correct
34 Correct 2 ms 2636 KB Output is correct
35 Correct 2 ms 2636 KB Output is correct
36 Correct 2 ms 2636 KB Output is correct
37 Correct 10 ms 3804 KB Output is correct
38 Correct 65 ms 11232 KB Output is correct
39 Correct 66 ms 11204 KB Output is correct
40 Correct 68 ms 11204 KB Output is correct
41 Correct 80 ms 11104 KB Output is correct
42 Correct 65 ms 10968 KB Output is correct
43 Correct 60 ms 10236 KB Output is correct
44 Correct 75 ms 11576 KB Output is correct
45 Correct 77 ms 11256 KB Output is correct
46 Correct 54 ms 10428 KB Output is correct
47 Correct 70 ms 11320 KB Output is correct
48 Correct 18 ms 4204 KB Output is correct
49 Correct 166 ms 15712 KB Output is correct
50 Correct 163 ms 15692 KB Output is correct
51 Correct 164 ms 15788 KB Output is correct
52 Correct 165 ms 15664 KB Output is correct
53 Correct 156 ms 15148 KB Output is correct
54 Correct 134 ms 13932 KB Output is correct
55 Correct 174 ms 16572 KB Output is correct
56 Correct 167 ms 15680 KB Output is correct
57 Correct 158 ms 15004 KB Output is correct
58 Correct 163 ms 16416 KB Output is correct
59 Correct 79 ms 7156 KB Output is correct
60 Correct 159 ms 11740 KB Output is correct
61 Correct 163 ms 11792 KB Output is correct
62 Correct 177 ms 12144 KB Output is correct
63 Correct 143 ms 11492 KB Output is correct
64 Correct 2 ms 2636 KB Output is correct
65 Correct 2 ms 2636 KB Output is correct
66 Correct 3 ms 2636 KB Output is correct
67 Correct 3 ms 2636 KB Output is correct
68 Correct 2 ms 2636 KB Output is correct
69 Correct 3 ms 2764 KB Output is correct
70 Correct 3 ms 2764 KB Output is correct
71 Correct 3 ms 2696 KB Output is correct
72 Correct 2 ms 2636 KB Output is correct
73 Correct 4 ms 2764 KB Output is correct
74 Correct 90 ms 12736 KB Output is correct
75 Correct 70 ms 11236 KB Output is correct
76 Correct 74 ms 11244 KB Output is correct
77 Correct 85 ms 11564 KB Output is correct
78 Correct 77 ms 9760 KB Output is correct
79 Correct 63 ms 8540 KB Output is correct
80 Correct 81 ms 11312 KB Output is correct
81 Correct 137 ms 14536 KB Output is correct
82 Correct 119 ms 15252 KB Output is correct
83 Correct 134 ms 16112 KB Output is correct
84 Correct 54 ms 10524 KB Output is correct
85 Correct 113 ms 14832 KB Output is correct
86 Correct 51 ms 7236 KB Output is correct
87 Correct 171 ms 15780 KB Output is correct
88 Correct 166 ms 15768 KB Output is correct
89 Correct 147 ms 15536 KB Output is correct
90 Correct 158 ms 13556 KB Output is correct
91 Correct 153 ms 13832 KB Output is correct
92 Correct 159 ms 15700 KB Output is correct
93 Correct 205 ms 18508 KB Output is correct
94 Correct 221 ms 19184 KB Output is correct
95 Correct 232 ms 19932 KB Output is correct
96 Correct 162 ms 15004 KB Output is correct
97 Correct 183 ms 17596 KB Output is correct