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Submission #699472

# Submission time Handle Problem Language Result Execution time Memory
699472 2023-02-17T04:35:41 Z He_Huanglu Swapping Cities (APIO20_swap) C++17
100 / 100
 271 ms 17128 KB 
#include "swap.h"
#include <bits/stdc++.h>
#define ii pair<int, int>
#define iii pair<int, ii>
#define fi first
#define se second
using namespace std;

const int N = 2e5 + 5;
int n, m, par[N], p1[N], p2[N], past[N], cur[N];
vector <iii> edg;

int root(int u)
{
    return (par[u] < 0) ? u : root(par[u]);
}

bool check(int u, int v, int mid)
{
    while (par[u] > 0 && past[u] <= mid) u = par[u];
    while (par[v] > 0 && past[v] <= mid) v = par[v];
    if(u != v) return 0;
    if(cur[u] && cur[u] <= mid) return 1;
    return 0;
}

void join(int u, int v, int w)
{
    int r1 = u, r2 = v;
    u = root(u), v = root(v);
    if(u == v)
    {
        if(!cur[u]) cur[u] = w;
        return ;
    }
    if(par[u] > par[v])
    {
        swap(u, v);
        swap(r1, r2);
    }
    par[u] += par[v];
    past[v] = w;

    if(par[v] == -1 && !cur[u])
    {
        if(p1[u] == r1) p1[u] = v;
        else if(p2[u] == r1) p2[u] = v;
        else cur[u] = w;
    }
    else if(!cur[u] && !cur[v])
    {
             if(p1[u] == r1 && p1[v] == r2) p1[u] = p2[v];
        else if(p1[u] == r1 && p2[v] == r2) p1[u] = p1[v];
        else if(p2[u] == r1 && p1[v] == r2) p2[u] = p2[v];
        else if(p2[u] == r1 && p2[v] == r2) p2[u] = p1[v];
        else cur[u] = w;
    }
    else if(!cur[u]) cur[u] = w;
    par[v] = u;
}

void init(int n, int m, vector <int> U, vector <int> V, vector <int> W)
{
    for(int i = 1; i <= n; i++)
    {
        p1[i] = p2[i] = i;
        par[i] = -1;
    }
    for(int i = 0; i < m; i++)
    {
        U[i]++, V[i]++;
        edg.push_back({W[i], {U[i], V[i]}});
    }
    sort(edg.begin(), edg.end());
    for(auto [w, e] : edg) join(e.fi, e.se, w);
}

int getMinimumFuelCapacity(int u, int v)
{
    u++, v++;
    int l = 1, r = edg[edg.size() - 1].fi, mid, ans = -1;
    while (l <= r)
    {
        mid = (l + r) / 2;
        if(check(u, v, mid)) ans = mid, r = mid - 1;
        else l = mid + 1;
    }
    return ans;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 324 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 33 ms 6324 KB Output is correct
10 Correct 41 ms 7308 KB Output is correct
11 Correct 42 ms 7236 KB Output is correct
12 Correct 46 ms 7604 KB Output is correct
13 Correct 43 ms 7600 KB Output is correct
14 Correct 48 ms 6680 KB Output is correct
15 Correct 200 ms 11468 KB Output is correct
16 Correct 207 ms 11308 KB Output is correct
17 Correct 205 ms 11708 KB Output is correct
18 Correct 132 ms 11792 KB Output is correct
19 Correct 117 ms 6656 KB Output is correct
20 Correct 192 ms 12336 KB Output is correct
21 Correct 209 ms 12720 KB Output is correct
22 Correct 208 ms 13072 KB Output is correct
23 Correct 133 ms 13104 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 134 ms 8176 KB Output is correct
4 Correct 134 ms 8224 KB Output is correct
5 Correct 140 ms 8488 KB Output is correct
6 Correct 131 ms 8152 KB Output is correct
7 Correct 143 ms 8384 KB Output is correct
8 Correct 138 ms 8112 KB Output is correct
9 Correct 135 ms 8172 KB Output is correct
10 Correct 136 ms 8084 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 324 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 320 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 328 KB Output is correct
20 Correct 1 ms 324 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 320 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 324 KB Output is correct
28 Correct 1 ms 468 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 324 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 33 ms 6324 KB Output is correct
11 Correct 41 ms 7308 KB Output is correct
12 Correct 42 ms 7236 KB Output is correct
13 Correct 46 ms 7604 KB Output is correct
14 Correct 43 ms 7600 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 320 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Correct 1 ms 328 KB Output is correct
25 Correct 1 ms 324 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 320 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 324 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 6 ms 1428 KB Output is correct
35 Correct 40 ms 7384 KB Output is correct
36 Correct 40 ms 7336 KB Output is correct
37 Correct 48 ms 7612 KB Output is correct
38 Correct 39 ms 7596 KB Output is correct
39 Correct 40 ms 7572 KB Output is correct
40 Correct 38 ms 6976 KB Output is correct
41 Correct 43 ms 7620 KB Output is correct
42 Correct 39 ms 7352 KB Output is correct
43 Correct 40 ms 7360 KB Output is correct
44 Correct 43 ms 7992 KB Output is correct
45 Correct 63 ms 10980 KB Output is correct
46 Correct 39 ms 7348 KB Output is correct
47 Correct 42 ms 7464 KB Output is correct
48 Correct 44 ms 8116 KB Output is correct
49 Correct 60 ms 9956 KB Output is correct
50 Correct 47 ms 7108 KB Output is correct
51 Correct 55 ms 8840 KB Output is correct
52 Correct 72 ms 11912 KB Output is correct
53 Correct 74 ms 12624 KB Output is correct
54 Correct 85 ms 13252 KB Output is correct
55 Correct 39 ms 7340 KB Output is correct
56 Correct 74 ms 12276 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 324 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 33 ms 6324 KB Output is correct
10 Correct 41 ms 7308 KB Output is correct
11 Correct 42 ms 7236 KB Output is correct
12 Correct 46 ms 7604 KB Output is correct
13 Correct 43 ms 7600 KB Output is correct
14 Correct 48 ms 6680 KB Output is correct
15 Correct 200 ms 11468 KB Output is correct
16 Correct 207 ms 11308 KB Output is correct
17 Correct 205 ms 11708 KB Output is correct
18 Correct 132 ms 11792 KB Output is correct
19 Correct 134 ms 8176 KB Output is correct
20 Correct 134 ms 8224 KB Output is correct
21 Correct 140 ms 8488 KB Output is correct
22 Correct 131 ms 8152 KB Output is correct
23 Correct 143 ms 8384 KB Output is correct
24 Correct 138 ms 8112 KB Output is correct
25 Correct 135 ms 8172 KB Output is correct
26 Correct 136 ms 8084 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 320 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 6 ms 1428 KB Output is correct
37 Correct 40 ms 7384 KB Output is correct
38 Correct 40 ms 7336 KB Output is correct
39 Correct 48 ms 7612 KB Output is correct
40 Correct 39 ms 7596 KB Output is correct
41 Correct 40 ms 7572 KB Output is correct
42 Correct 38 ms 6976 KB Output is correct
43 Correct 43 ms 7620 KB Output is correct
44 Correct 39 ms 7352 KB Output is correct
45 Correct 40 ms 7360 KB Output is correct
46 Correct 43 ms 7992 KB Output is correct
47 Correct 22 ms 1808 KB Output is correct
48 Correct 186 ms 12212 KB Output is correct
49 Correct 194 ms 12252 KB Output is correct
50 Correct 185 ms 12452 KB Output is correct
51 Correct 176 ms 12444 KB Output is correct
52 Correct 175 ms 12196 KB Output is correct
53 Correct 206 ms 11308 KB Output is correct
54 Correct 219 ms 13060 KB Output is correct
55 Correct 184 ms 12172 KB Output is correct
56 Correct 128 ms 12176 KB Output is correct
57 Correct 217 ms 13496 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 324 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 33 ms 6324 KB Output is correct
11 Correct 41 ms 7308 KB Output is correct
12 Correct 42 ms 7236 KB Output is correct
13 Correct 46 ms 7604 KB Output is correct
14 Correct 43 ms 7600 KB Output is correct
15 Correct 48 ms 6680 KB Output is correct
16 Correct 200 ms 11468 KB Output is correct
17 Correct 207 ms 11308 KB Output is correct
18 Correct 205 ms 11708 KB Output is correct
19 Correct 132 ms 11792 KB Output is correct
20 Correct 134 ms 8176 KB Output is correct
21 Correct 134 ms 8224 KB Output is correct
22 Correct 140 ms 8488 KB Output is correct
23 Correct 131 ms 8152 KB Output is correct
24 Correct 143 ms 8384 KB Output is correct
25 Correct 138 ms 8112 KB Output is correct
26 Correct 135 ms 8172 KB Output is correct
27 Correct 136 ms 8084 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 320 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 344 KB Output is correct
37 Correct 6 ms 1428 KB Output is correct
38 Correct 40 ms 7384 KB Output is correct
39 Correct 40 ms 7336 KB Output is correct
40 Correct 48 ms 7612 KB Output is correct
41 Correct 39 ms 7596 KB Output is correct
42 Correct 40 ms 7572 KB Output is correct
43 Correct 38 ms 6976 KB Output is correct
44 Correct 43 ms 7620 KB Output is correct
45 Correct 39 ms 7352 KB Output is correct
46 Correct 40 ms 7360 KB Output is correct
47 Correct 43 ms 7992 KB Output is correct
48 Correct 22 ms 1808 KB Output is correct
49 Correct 186 ms 12212 KB Output is correct
50 Correct 194 ms 12252 KB Output is correct
51 Correct 185 ms 12452 KB Output is correct
52 Correct 176 ms 12444 KB Output is correct
53 Correct 175 ms 12196 KB Output is correct
54 Correct 206 ms 11308 KB Output is correct
55 Correct 219 ms 13060 KB Output is correct
56 Correct 184 ms 12172 KB Output is correct
57 Correct 128 ms 12176 KB Output is correct
58 Correct 217 ms 13496 KB Output is correct
59 Correct 117 ms 6656 KB Output is correct
60 Correct 192 ms 12336 KB Output is correct
61 Correct 209 ms 12720 KB Output is correct
62 Correct 208 ms 13072 KB Output is correct
63 Correct 133 ms 13104 KB Output is correct
64 Correct 1 ms 328 KB Output is correct
65 Correct 1 ms 324 KB Output is correct
66 Correct 1 ms 340 KB Output is correct
67 Correct 1 ms 340 KB Output is correct
68 Correct 1 ms 320 KB Output is correct
69 Correct 1 ms 340 KB Output is correct
70 Correct 1 ms 468 KB Output is correct
71 Correct 1 ms 468 KB Output is correct
72 Correct 1 ms 324 KB Output is correct
73 Correct 1 ms 468 KB Output is correct
74 Correct 63 ms 10980 KB Output is correct
75 Correct 39 ms 7348 KB Output is correct
76 Correct 42 ms 7464 KB Output is correct
77 Correct 44 ms 8116 KB Output is correct
78 Correct 60 ms 9956 KB Output is correct
79 Correct 47 ms 7108 KB Output is correct
80 Correct 55 ms 8840 KB Output is correct
81 Correct 72 ms 11912 KB Output is correct
82 Correct 74 ms 12624 KB Output is correct
83 Correct 85 ms 13252 KB Output is correct
84 Correct 39 ms 7340 KB Output is correct
85 Correct 74 ms 12276 KB Output is correct
86 Correct 54 ms 4772 KB Output is correct
87 Correct 183 ms 12200 KB Output is correct
88 Correct 185 ms 12348 KB Output is correct
89 Correct 149 ms 12596 KB Output is correct
90 Correct 184 ms 13756 KB Output is correct
91 Correct 188 ms 13708 KB Output is correct
92 Correct 183 ms 13724 KB Output is correct
93 Correct 232 ms 15944 KB Output is correct
94 Correct 216 ms 16784 KB Output is correct
95 Correct 271 ms 17128 KB Output is correct
96 Correct 129 ms 12320 KB Output is correct
97 Correct 197 ms 14900 KB Output is correct