oj.uz

Submission #751870

# Submission time Handle Problem Language Result Execution time Memory
751870 2023-06-01T17:13:19 Z snpmrnhlol Swapping Cities (APIO20_swap) C++17
37 / 100
 2000 ms 37416 KB 
#include "swap.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 1e5;
const int M = 2e5;
const int inf = 2e9;
int id[M],deg[N];
struct nodedata
{
    int parent,active;
};
vector <nodedata> nodes;///parent,active
vector <int> e[2*N - 1];
int p2[2*N - 1][20];
int dpth[2*N - 1];
struct dsu
{
    int id,parent,active,sz;
};
dsu v[N];
int leader(int node)
{
    if(node == v[node].parent)return node;
    int l = leader(v[node].parent);
    v[node].parent = l;
    return v[node].parent;
}
void connect(int a,int b,int w)
{
    deg[a]++;
    deg[b]++;
    int active = 0;
    if(deg[a] >= 3 || deg[b] >= 3)active = 1;
    a = leader(a);
    b = leader(b);
    if(a == b)
    {
        if(nodes[v[a].id].active == inf)nodes[v[a].id].active = w;
        v[a].active = min(v[a].active,w);
    }
    else
    {
        nodes[v[a].id].parent = nodes.size();
        nodes[v[b].id].parent = nodes.size();
        if(v[a].active != inf || v[b].active != inf)active = 1;
        if(v[a].sz < v[b].sz)swap(a,b);
        v[b].parent = a;
        v[a].sz+=v[b].sz;
        v[a].id = nodes.size();
        nodes.push_back({-1,active?w:inf});
        v[a].active = active?w:inf;
    }
}
void dfs(int node,int p = -1,int d = 0)
{
    dpth[node] = d;
    p2[node][0] = p;
    for(auto i:e[node])
    {
        if(i == p)continue;
        dfs(i,node,d + 1);
    }
}
void init(int n, int m,vector<int> u,vector<int> u2,vector<int> w)
{
    int i,j;
    for(i = 0; i < m; i++)id[i] = i;
    for(i = 0; i < n; i++)
    {
        nodes.push_back({-1,inf});
        v[i] = {i,i,inf,1};
    }
    sort(id,id + m,[&](int a,int b)
    {
        return w[a] < w[b];
    });
    for(i = 0; i < m; i++)
    {
        ///connect u[id[i]] with v[id[i]]
        connect(u[id[i]],u2[id[i]],w[id[i]]);
        //cout<<u[id[i]]<<' '<<u2[id[i]]<<'\n';
    }
    int cnt = 0;
    for(auto i:nodes)
    {
        if(i.parent != -1)
        {
            e[i.parent].push_back(cnt);
        }
        cnt++;
    }
    dfs(nodes.size() - 1,nodes.size() - 1);
    for(j = 1; j < 20; j++)
    {
        for(i = 0; i < 2*n - 1; i++)
        {
            p2[i][j] = p2[p2[i][j - 1]][j - 1];
        }
    }
    /*for(i = 0;i < 2*n - 1;i++){
        for(j = 0;j < 20;j++)cout<<p2[i][j]<<' ';
        cout<<'\n';
    }
    for(i = 0;i < 2*n - 1;i++){
        cout<<p2[i][0]<<' '<<dpth[i]<<' '<<nodes[i].active<<' '<<i<<'\n';
    }*/
}

int getMinimumFuelCapacity(int x, int y)
{
    if(nodes[nodes.size() - 1].active == inf)return -1;
    if(dpth[x] < dpth[y])swap(x,y);
    /*for(int i = 19; i >= 0; i--)
    {
        if(dpth[x] - (1<<i) >= dpth[y])
        {
            x = p2[x][i];
        }
    }
    for(int i = 19; i >= 0; i--)
    {
        if(p2[x][i] != p2[y][i])
        {
            x = p2[x][i];
            y = p2[y][i];
        }
    }
    if(x != y)x = p2[x][0];
    for(int i = 19; i >= 0; i--)
    {
        if(nodes[p2[x][i]].active == inf)
        {
            x = p2[x][i];
        }
    }
    if(nodes[x].active == inf)
    {
        x = p2[x][0];
    }*/
    while(dpth[x] > dpth[y])x = p2[x][0];
    while(x != y)x = p2[x][0],y = p2[y][0];
    while(nodes[x].active == inf)x = p2[x][0];
    return nodes[x].active;
}
/**
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

3 2
0 1 5
0 2 5
1
1 2
**/

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 5076 KB Output is correct
5 Correct 4 ms 5204 KB Output is correct
6 Correct 3 ms 5204 KB Output is correct
7 Correct 3 ms 5204 KB Output is correct
8 Correct 5 ms 5204 KB Output is correct
9 Correct 88 ms 25240 KB Output is correct
10 Correct 135 ms 29756 KB Output is correct
11 Correct 114 ms 29508 KB Output is correct
12 Correct 125 ms 30744 KB Output is correct
13 Correct 114 ms 32108 KB Output is correct
14 Correct 102 ms 25360 KB Output is correct
15 Correct 179 ms 31804 KB Output is correct
16 Correct 165 ms 31108 KB Output is correct
17 Correct 206 ms 32532 KB Output is correct
18 Correct 154 ms 33912 KB Output is correct
19 Correct 89 ms 12480 KB Output is correct
20 Correct 269 ms 33004 KB Output is correct
21 Correct 269 ms 32236 KB Output is correct
22 Correct 309 ms 33952 KB Output is correct
23 Execution timed out 2063 ms 33764 KB Time limit exceeded
24 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Execution timed out 2048 ms 33588 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 5076 KB Output is correct
5 Correct 4 ms 5204 KB Output is correct
6 Correct 3 ms 5204 KB Output is correct
7 Correct 3 ms 5204 KB Output is correct
8 Correct 5 ms 5204 KB Output is correct
9 Correct 4 ms 4948 KB Output is correct
10 Correct 4 ms 5272 KB Output is correct
11 Correct 4 ms 5204 KB Output is correct
12 Correct 4 ms 5204 KB Output is correct
13 Correct 4 ms 5204 KB Output is correct
14 Correct 4 ms 5160 KB Output is correct
15 Correct 4 ms 5284 KB Output is correct
16 Correct 4 ms 5204 KB Output is correct
17 Correct 4 ms 5284 KB Output is correct
18 Correct 3 ms 5300 KB Output is correct
19 Correct 4 ms 5204 KB Output is correct
20 Correct 3 ms 5204 KB Output is correct
21 Correct 3 ms 5204 KB Output is correct
22 Correct 4 ms 5076 KB Output is correct
23 Correct 4 ms 5156 KB Output is correct
24 Correct 6 ms 5332 KB Output is correct
25 Correct 6 ms 5332 KB Output is correct
26 Correct 5 ms 5284 KB Output is correct
27 Correct 4 ms 5324 KB Output is correct
28 Correct 4 ms 5284 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 5076 KB Output is correct
6 Correct 4 ms 5204 KB Output is correct
7 Correct 3 ms 5204 KB Output is correct
8 Correct 3 ms 5204 KB Output is correct
9 Correct 5 ms 5204 KB Output is correct
10 Correct 88 ms 25240 KB Output is correct
11 Correct 135 ms 29756 KB Output is correct
12 Correct 114 ms 29508 KB Output is correct
13 Correct 125 ms 30744 KB Output is correct
14 Correct 114 ms 32108 KB Output is correct
15 Correct 4 ms 5272 KB Output is correct
16 Correct 4 ms 5204 KB Output is correct
17 Correct 4 ms 5204 KB Output is correct
18 Correct 4 ms 5204 KB Output is correct
19 Correct 4 ms 5160 KB Output is correct
20 Correct 4 ms 5284 KB Output is correct
21 Correct 4 ms 5204 KB Output is correct
22 Correct 4 ms 5284 KB Output is correct
23 Correct 3 ms 5300 KB Output is correct
24 Correct 4 ms 5204 KB Output is correct
25 Correct 3 ms 5204 KB Output is correct
26 Correct 3 ms 5204 KB Output is correct
27 Correct 4 ms 5076 KB Output is correct
28 Correct 4 ms 5156 KB Output is correct
29 Correct 6 ms 5332 KB Output is correct
30 Correct 6 ms 5332 KB Output is correct
31 Correct 5 ms 5284 KB Output is correct
32 Correct 4 ms 5324 KB Output is correct
33 Correct 4 ms 5284 KB Output is correct
34 Correct 15 ms 8864 KB Output is correct
35 Correct 115 ms 32668 KB Output is correct
36 Correct 118 ms 32652 KB Output is correct
37 Correct 128 ms 32644 KB Output is correct
38 Correct 120 ms 32336 KB Output is correct
39 Correct 159 ms 32008 KB Output is correct
40 Correct 130 ms 29912 KB Output is correct
41 Correct 130 ms 32948 KB Output is correct
42 Correct 127 ms 32660 KB Output is correct
43 Correct 125 ms 34392 KB Output is correct
44 Correct 129 ms 33104 KB Output is correct
45 Correct 144 ms 30896 KB Output is correct
46 Correct 122 ms 32624 KB Output is correct
47 Correct 143 ms 32708 KB Output is correct
48 Correct 148 ms 33176 KB Output is correct
49 Correct 79 ms 12356 KB Output is correct
50 Correct 56 ms 12408 KB Output is correct
51 Correct 132 ms 26536 KB Output is correct
52 Correct 175 ms 35828 KB Output is correct
53 Correct 181 ms 36984 KB Output is correct
54 Correct 177 ms 37416 KB Output is correct
55 Correct 119 ms 34312 KB Output is correct
56 Correct 164 ms 37296 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 5076 KB Output is correct
5 Correct 4 ms 5204 KB Output is correct
6 Correct 3 ms 5204 KB Output is correct
7 Correct 3 ms 5204 KB Output is correct
8 Correct 5 ms 5204 KB Output is correct
9 Correct 88 ms 25240 KB Output is correct
10 Correct 135 ms 29756 KB Output is correct
11 Correct 114 ms 29508 KB Output is correct
12 Correct 125 ms 30744 KB Output is correct
13 Correct 114 ms 32108 KB Output is correct
14 Correct 102 ms 25360 KB Output is correct
15 Correct 179 ms 31804 KB Output is correct
16 Correct 165 ms 31108 KB Output is correct
17 Correct 206 ms 32532 KB Output is correct
18 Correct 154 ms 33912 KB Output is correct
19 Execution timed out 2048 ms 33588 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 5076 KB Output is correct
6 Correct 4 ms 5204 KB Output is correct
7 Correct 3 ms 5204 KB Output is correct
8 Correct 3 ms 5204 KB Output is correct
9 Correct 5 ms 5204 KB Output is correct
10 Correct 88 ms 25240 KB Output is correct
11 Correct 135 ms 29756 KB Output is correct
12 Correct 114 ms 29508 KB Output is correct
13 Correct 125 ms 30744 KB Output is correct
14 Correct 114 ms 32108 KB Output is correct
15 Correct 102 ms 25360 KB Output is correct
16 Correct 179 ms 31804 KB Output is correct
17 Correct 165 ms 31108 KB Output is correct
18 Correct 206 ms 32532 KB Output is correct
19 Correct 154 ms 33912 KB Output is correct
20 Execution timed out 2048 ms 33588 KB Time limit exceeded
21 Halted 0 ms 0 KB -