oj.uz

Submission #717985

# Submission time Handle Problem Language Result Execution time Memory
717985 2023-04-03T05:30:25 Z LittleCube Swapping Cities (APIO20_swap) C++14
100 / 100
 318 ms 63704 KB 
#include "swap.h"
#ifndef EVAL
#include "grader.cpp"
#endif
#include <bits/stdc++.h>
#define pii pair<int, int>
#define F first
#define S second
using namespace std;

namespace
{
    int N, M, K, t, dp[300000], dsu[100000], rk[100000], node[100000], pre[300000][20];
    int chain[100000][2];
    pii io[300000];
    vector<pair<int, pii>> edge;
    vector<int> E[300000];

    int find(int k)
    {
        return dsu[k] == k ? k : dsu[k] = find(dsu[k]);
    }

    void merge(int x, int y, int u, int v, int w)
    {
        x = find(x), y = find(y);
        if (x == y)
        {
            chain[x][0] = chain[x][1] = -1;
            dp[++K] = w;
            E[K].emplace_back(node[x]);
            node[x] = K;
            return;
        }
        if (rk[x] < rk[y])
        {
            merge(y, x, u, v, w);
            return;
        }
        dsu[y] = x;
        rk[x] += rk[y];
        bool flag = 0;
        //fprintf(stderr, "(%d, %d) (%d, %d) (%d, %d) -> ", chain[x][0], chain[x][1], u, v, chain[y][0], chain[y][1]);
        for (int i = 0; (!flag) && i < 2; i++)
            for (int j = 0; (!flag) && j < 2; j++)
                if ((chain[x][i] == u && chain[y][j] == v) || (chain[x][i] == v && chain[y][j] == u))
                {
                    flag = 1;
                    chain[x][i] = chain[y][j ^ 1];
                }
        if (!flag)
            chain[x][0] = chain[x][1] = -1;
        if (chain[x][0] != -1)
            w = 2e9;
        //fprintf(stderr, "(%d, %d)\n", chain[x][0], chain[x][1]);
        dp[++K] = w;
        E[K].emplace_back(node[x]);
        E[K].emplace_back(node[y]);
        node[x] = K;
    }

    void dfs(int u)
    {
        io[u].F = ++t;
        for (auto v : E[u])
        {
            pre[v][0] = u;
            dp[v] = min(dp[v], dp[u]);
            dfs(v);
        }
        io[u].S = t;
    }
    bool isChild(int r, int c)
    {
        return io[r].F <= io[c].F && io[c].S <= io[r].S;
    }
}

void init(int N, int M, vector<int> U, vector<int> V, vector<int> W)
{
    ::N = N, ::M = M, ::K = N - 1;
    for (int i = 0; i < N; i++)
        node[i] = dsu[i] = chain[i][0] = chain[i][1] = i, rk[i] = 1;

    for (int i = 0; i < M; i++)
        edge.emplace_back(make_pair(W[i], pii(U[i], V[i])));
    sort(edge.begin(), edge.end());
    for (auto [w, p] : edge)
    {
        auto [u, v] = p;
        merge(u, v, u, v, w);
    }
    pre[K][0] = K;
    dfs(K);
    for (int p = 0; p < 19; p++)
        for (int i = 0; i <= K; i++)
            pre[i][p + 1] = pre[pre[i][p]][p];
}

int getMinimumFuelCapacity(int X, int Y)
{
    int lca = X, ans = 2e9;
    for (int p = 19; p >= 0; p--)
        if (!isChild(pre[lca][p], Y))
            lca = pre[lca][p];
    if (!isChild(lca, Y))
        lca = pre[lca][0];

    ans = dp[lca];
    return (ans > 1.5e9 ? -1 : ans);
}

Compilation message

swap.cpp: In function 'void init(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
swap.cpp:88:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   88 |     for (auto [w, p] : edge)
      |               ^
swap.cpp:90:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   90 |         auto [u, v] = p;
      |              ^

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 4 ms 7396 KB Output is correct
4 Correct 4 ms 7380 KB Output is correct
5 Correct 5 ms 7636 KB Output is correct
6 Correct 4 ms 7624 KB Output is correct
7 Correct 4 ms 7624 KB Output is correct
8 Correct 5 ms 7636 KB Output is correct
9 Correct 89 ms 29908 KB Output is correct
10 Correct 109 ms 35076 KB Output is correct
11 Correct 108 ms 34512 KB Output is correct
12 Correct 114 ms 36088 KB Output is correct
13 Correct 108 ms 39104 KB Output is correct
14 Correct 99 ms 30148 KB Output is correct
15 Correct 188 ms 39184 KB Output is correct
16 Correct 190 ms 38496 KB Output is correct
17 Correct 197 ms 40124 KB Output is correct
18 Correct 261 ms 43196 KB Output is correct
19 Correct 86 ms 17036 KB Output is correct
20 Correct 204 ms 40392 KB Output is correct
21 Correct 231 ms 39616 KB Output is correct
22 Correct 222 ms 41512 KB Output is correct
23 Correct 245 ms 44732 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 229 ms 41472 KB Output is correct
4 Correct 245 ms 46764 KB Output is correct
5 Correct 261 ms 46072 KB Output is correct
6 Correct 277 ms 46624 KB Output is correct
7 Correct 276 ms 46652 KB Output is correct
8 Correct 270 ms 45144 KB Output is correct
9 Correct 270 ms 46292 KB Output is correct
10 Correct 264 ms 44836 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 4 ms 7396 KB Output is correct
4 Correct 4 ms 7380 KB Output is correct
5 Correct 5 ms 7636 KB Output is correct
6 Correct 4 ms 7624 KB Output is correct
7 Correct 4 ms 7624 KB Output is correct
8 Correct 5 ms 7636 KB Output is correct
9 Correct 4 ms 7380 KB Output is correct
10 Correct 5 ms 7680 KB Output is correct
11 Correct 5 ms 7628 KB Output is correct
12 Correct 7 ms 7628 KB Output is correct
13 Correct 5 ms 7508 KB Output is correct
14 Correct 6 ms 7508 KB Output is correct
15 Correct 7 ms 7636 KB Output is correct
16 Correct 7 ms 7624 KB Output is correct
17 Correct 5 ms 7636 KB Output is correct
18 Correct 5 ms 7636 KB Output is correct
19 Correct 5 ms 7640 KB Output is correct
20 Correct 4 ms 7636 KB Output is correct
21 Correct 6 ms 7624 KB Output is correct
22 Correct 5 ms 7764 KB Output is correct
23 Correct 5 ms 7508 KB Output is correct
24 Correct 5 ms 7764 KB Output is correct
25 Correct 5 ms 7756 KB Output is correct
26 Correct 5 ms 7892 KB Output is correct
27 Correct 4 ms 7636 KB Output is correct
28 Correct 5 ms 7892 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 4 ms 7380 KB Output is correct
4 Correct 4 ms 7396 KB Output is correct
5 Correct 4 ms 7380 KB Output is correct
6 Correct 5 ms 7636 KB Output is correct
7 Correct 4 ms 7624 KB Output is correct
8 Correct 4 ms 7624 KB Output is correct
9 Correct 5 ms 7636 KB Output is correct
10 Correct 89 ms 29908 KB Output is correct
11 Correct 109 ms 35076 KB Output is correct
12 Correct 108 ms 34512 KB Output is correct
13 Correct 114 ms 36088 KB Output is correct
14 Correct 108 ms 39104 KB Output is correct
15 Correct 5 ms 7680 KB Output is correct
16 Correct 5 ms 7628 KB Output is correct
17 Correct 7 ms 7628 KB Output is correct
18 Correct 5 ms 7508 KB Output is correct
19 Correct 6 ms 7508 KB Output is correct
20 Correct 7 ms 7636 KB Output is correct
21 Correct 7 ms 7624 KB Output is correct
22 Correct 5 ms 7636 KB Output is correct
23 Correct 5 ms 7636 KB Output is correct
24 Correct 5 ms 7640 KB Output is correct
25 Correct 4 ms 7636 KB Output is correct
26 Correct 6 ms 7624 KB Output is correct
27 Correct 5 ms 7764 KB Output is correct
28 Correct 5 ms 7508 KB Output is correct
29 Correct 5 ms 7764 KB Output is correct
30 Correct 5 ms 7756 KB Output is correct
31 Correct 5 ms 7892 KB Output is correct
32 Correct 4 ms 7636 KB Output is correct
33 Correct 5 ms 7892 KB Output is correct
34 Correct 16 ms 11228 KB Output is correct
35 Correct 116 ms 35776 KB Output is correct
36 Correct 127 ms 35800 KB Output is correct
37 Correct 114 ms 35760 KB Output is correct
38 Correct 106 ms 35368 KB Output is correct
39 Correct 111 ms 35300 KB Output is correct
40 Correct 113 ms 32956 KB Output is correct
41 Correct 111 ms 36080 KB Output is correct
42 Correct 116 ms 35816 KB Output is correct
43 Correct 106 ms 39932 KB Output is correct
44 Correct 115 ms 36112 KB Output is correct
45 Correct 138 ms 47896 KB Output is correct
46 Correct 115 ms 35772 KB Output is correct
47 Correct 120 ms 35900 KB Output is correct
48 Correct 115 ms 39872 KB Output is correct
49 Correct 102 ms 44776 KB Output is correct
50 Correct 78 ms 36536 KB Output is correct
51 Correct 122 ms 42420 KB Output is correct
52 Correct 158 ms 50812 KB Output is correct
53 Correct 174 ms 53584 KB Output is correct
54 Correct 192 ms 59824 KB Output is correct
55 Correct 123 ms 39532 KB Output is correct
56 Correct 158 ms 55356 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 4 ms 7396 KB Output is correct
4 Correct 4 ms 7380 KB Output is correct
5 Correct 5 ms 7636 KB Output is correct
6 Correct 4 ms 7624 KB Output is correct
7 Correct 4 ms 7624 KB Output is correct
8 Correct 5 ms 7636 KB Output is correct
9 Correct 89 ms 29908 KB Output is correct
10 Correct 109 ms 35076 KB Output is correct
11 Correct 108 ms 34512 KB Output is correct
12 Correct 114 ms 36088 KB Output is correct
13 Correct 108 ms 39104 KB Output is correct
14 Correct 99 ms 30148 KB Output is correct
15 Correct 188 ms 39184 KB Output is correct
16 Correct 190 ms 38496 KB Output is correct
17 Correct 197 ms 40124 KB Output is correct
18 Correct 261 ms 43196 KB Output is correct
19 Correct 229 ms 41472 KB Output is correct
20 Correct 245 ms 46764 KB Output is correct
21 Correct 261 ms 46072 KB Output is correct
22 Correct 277 ms 46624 KB Output is correct
23 Correct 276 ms 46652 KB Output is correct
24 Correct 270 ms 45144 KB Output is correct
25 Correct 270 ms 46292 KB Output is correct
26 Correct 264 ms 44836 KB Output is correct
27 Correct 5 ms 7680 KB Output is correct
28 Correct 5 ms 7628 KB Output is correct
29 Correct 7 ms 7628 KB Output is correct
30 Correct 5 ms 7508 KB Output is correct
31 Correct 6 ms 7508 KB Output is correct
32 Correct 7 ms 7636 KB Output is correct
33 Correct 7 ms 7624 KB Output is correct
34 Correct 5 ms 7636 KB Output is correct
35 Correct 5 ms 7636 KB Output is correct
36 Correct 16 ms 11228 KB Output is correct
37 Correct 116 ms 35776 KB Output is correct
38 Correct 127 ms 35800 KB Output is correct
39 Correct 114 ms 35760 KB Output is correct
40 Correct 106 ms 35368 KB Output is correct
41 Correct 111 ms 35300 KB Output is correct
42 Correct 113 ms 32956 KB Output is correct
43 Correct 111 ms 36080 KB Output is correct
44 Correct 116 ms 35816 KB Output is correct
45 Correct 106 ms 39932 KB Output is correct
46 Correct 115 ms 36112 KB Output is correct
47 Correct 21 ms 11360 KB Output is correct
48 Correct 197 ms 40612 KB Output is correct
49 Correct 201 ms 40680 KB Output is correct
50 Correct 192 ms 40596 KB Output is correct
51 Correct 219 ms 40612 KB Output is correct
52 Correct 181 ms 38808 KB Output is correct
53 Correct 178 ms 32248 KB Output is correct
54 Correct 195 ms 41488 KB Output is correct
55 Correct 196 ms 40572 KB Output is correct
56 Correct 266 ms 44052 KB Output is correct
57 Correct 214 ms 41648 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 4 ms 7380 KB Output is correct
4 Correct 4 ms 7396 KB Output is correct
5 Correct 4 ms 7380 KB Output is correct
6 Correct 5 ms 7636 KB Output is correct
7 Correct 4 ms 7624 KB Output is correct
8 Correct 4 ms 7624 KB Output is correct
9 Correct 5 ms 7636 KB Output is correct
10 Correct 89 ms 29908 KB Output is correct
11 Correct 109 ms 35076 KB Output is correct
12 Correct 108 ms 34512 KB Output is correct
13 Correct 114 ms 36088 KB Output is correct
14 Correct 108 ms 39104 KB Output is correct
15 Correct 99 ms 30148 KB Output is correct
16 Correct 188 ms 39184 KB Output is correct
17 Correct 190 ms 38496 KB Output is correct
18 Correct 197 ms 40124 KB Output is correct
19 Correct 261 ms 43196 KB Output is correct
20 Correct 229 ms 41472 KB Output is correct
21 Correct 245 ms 46764 KB Output is correct
22 Correct 261 ms 46072 KB Output is correct
23 Correct 277 ms 46624 KB Output is correct
24 Correct 276 ms 46652 KB Output is correct
25 Correct 270 ms 45144 KB Output is correct
26 Correct 270 ms 46292 KB Output is correct
27 Correct 264 ms 44836 KB Output is correct
28 Correct 5 ms 7680 KB Output is correct
29 Correct 5 ms 7628 KB Output is correct
30 Correct 7 ms 7628 KB Output is correct
31 Correct 5 ms 7508 KB Output is correct
32 Correct 6 ms 7508 KB Output is correct
33 Correct 7 ms 7636 KB Output is correct
34 Correct 7 ms 7624 KB Output is correct
35 Correct 5 ms 7636 KB Output is correct
36 Correct 5 ms 7636 KB Output is correct
37 Correct 16 ms 11228 KB Output is correct
38 Correct 116 ms 35776 KB Output is correct
39 Correct 127 ms 35800 KB Output is correct
40 Correct 114 ms 35760 KB Output is correct
41 Correct 106 ms 35368 KB Output is correct
42 Correct 111 ms 35300 KB Output is correct
43 Correct 113 ms 32956 KB Output is correct
44 Correct 111 ms 36080 KB Output is correct
45 Correct 116 ms 35816 KB Output is correct
46 Correct 106 ms 39932 KB Output is correct
47 Correct 115 ms 36112 KB Output is correct
48 Correct 21 ms 11360 KB Output is correct
49 Correct 197 ms 40612 KB Output is correct
50 Correct 201 ms 40680 KB Output is correct
51 Correct 192 ms 40596 KB Output is correct
52 Correct 219 ms 40612 KB Output is correct
53 Correct 181 ms 38808 KB Output is correct
54 Correct 178 ms 32248 KB Output is correct
55 Correct 195 ms 41488 KB Output is correct
56 Correct 196 ms 40572 KB Output is correct
57 Correct 266 ms 44052 KB Output is correct
58 Correct 214 ms 41648 KB Output is correct
59 Correct 86 ms 17036 KB Output is correct
60 Correct 204 ms 40392 KB Output is correct
61 Correct 231 ms 39616 KB Output is correct
62 Correct 222 ms 41512 KB Output is correct
63 Correct 245 ms 44732 KB Output is correct
64 Correct 5 ms 7640 KB Output is correct
65 Correct 4 ms 7636 KB Output is correct
66 Correct 6 ms 7624 KB Output is correct
67 Correct 5 ms 7764 KB Output is correct
68 Correct 5 ms 7508 KB Output is correct
69 Correct 5 ms 7764 KB Output is correct
70 Correct 5 ms 7756 KB Output is correct
71 Correct 5 ms 7892 KB Output is correct
72 Correct 4 ms 7636 KB Output is correct
73 Correct 5 ms 7892 KB Output is correct
74 Correct 138 ms 47896 KB Output is correct
75 Correct 115 ms 35772 KB Output is correct
76 Correct 120 ms 35900 KB Output is correct
77 Correct 115 ms 39872 KB Output is correct
78 Correct 102 ms 44776 KB Output is correct
79 Correct 78 ms 36536 KB Output is correct
80 Correct 122 ms 42420 KB Output is correct
81 Correct 158 ms 50812 KB Output is correct
82 Correct 174 ms 53584 KB Output is correct
83 Correct 192 ms 59824 KB Output is correct
84 Correct 123 ms 39532 KB Output is correct
85 Correct 158 ms 55356 KB Output is correct
86 Correct 79 ms 22452 KB Output is correct
87 Correct 220 ms 40576 KB Output is correct
88 Correct 208 ms 40744 KB Output is correct
89 Correct 256 ms 43288 KB Output is correct
90 Correct 192 ms 50844 KB Output is correct
91 Correct 204 ms 47916 KB Output is correct
92 Correct 286 ms 46076 KB Output is correct
93 Correct 271 ms 54932 KB Output is correct
94 Correct 318 ms 58100 KB Output is correct
95 Correct 288 ms 63704 KB Output is correct
96 Correct 275 ms 44184 KB Output is correct
97 Correct 308 ms 51336 KB Output is correct