oj.uz

Submission #1080853

# Submission time Handle Problem Language Result Execution time Memory
1080853 2024-08-29T15:09:46 Z alexdd Swapping Cities (APIO20_swap) C++17
0 / 100
 2000 ms 12072 KB 
#include "swap.h"
#include <bits/stdc++.h>
using namespace std;
const int INF = 2e9;
int father[100005],siz[100005],cap1[100005],cap2[100005],primu[100005],insus[100005];
int gas(int x)
{
    if(father[x]==x)
        return x;
    return gas(father[x]);
}
void unite(int x, int y, int t)
{
    int rootx = gas(x), rooty = gas(y);
    if(rootx==rooty)
    {
        primu[rootx] = min(primu[rootx], t);
        return;
    }
    if(siz[rootx] < siz[rooty])
    {
        swap(rootx,rooty);
        swap(x,y);
    }
    insus[y]=t;
    father[y]=x;
    siz[x]+=siz[y];

    if(primu[rootx]!=INF)
    {

    }
    else if(primu[rooty]!=INF)
    {
        primu[rootx]=t;
    }
    else if(x==cap1[rootx] && y==cap1[rooty])
    {
        cap1[rootx]=cap2[rooty];
    }
    else if(x==cap1[rootx] && y==cap2[rooty])
    {
        cap1[rootx]=cap1[rooty];
    }
    else if(x==cap2[rootx] && y==cap1[rooty])
    {
        cap2[rootx]=cap2[rooty];
    }
    else if(x==cap2[rootx] && y==cap2[rooty])
    {
        cap2[rootx]=cap1[rooty];
    }
    else
    {
        primu[rootx]=t;
    }
}

vector<pair<int,pair<int,int>>> edges;
vector<int> con[100005];
int tin[100005],tout[100005],timer;
int depth[100005];
void dfs(int nod)
{
    tin[nod]=++timer;
    for(auto adj:con[nod])
    {
        depth[adj]=depth[nod]+1;
        dfs(adj);
    }
    tout[nod]=++timer;
}
bool isanc(int x, int y)
{
    return (tin[x]<=tin[y] && tout[x]>=tout[y]);
}
void init(int N, int M, std::vector<int> U, std::vector<int> V, std::vector<int> W)
{
    for(int i=0;i<M;i++)
        edges.push_back({W[i],{U[i],V[i]}});
    sort(edges.begin(),edges.end());
    for(int i=0;i<N;i++)
    {
        father[i]=i;
        siz[i]=1;
        cap1[i]=cap2[i]=i;
        primu[i]=INF;
    }
    for(int i=0;i<edges.size();i++)
    {
        unite(edges[i].second.first, edges[i].second.second, edges[i].first);
    }
    for(int i=0;i<N;i++)
    {
        if(father[i]==i)
        {
            father[i]=-1;
        }
        else
        {
            con[father[i]].push_back(i);
        }
    }
    for(int i=0;i<N;i++)
    {
        if(father[i]==-1)
        {
            dfs(i);
        }
    }
}

int getMinimumFuelCapacity(int x, int y)
{
    return -1;
    int mnm=INF,aux=0;
    while(x!=-1 && !isanc(x,y))
    {
        aux = max(aux, insus[x]);
        x = father[x];
    }
    if(x==-1)
        return -1;
    while(y!=x)
    {
        aux = max(aux, insus[y]);
        y = father[y];
    }
    while(x!=-1)
    {
        mnm = min(mnm, max(aux, primu[x]));
        aux = max(aux, insus[x]);
        x = father[x];
    }
    if(mnm==INF)
        return -1;
    else
        return mnm;
}

Compilation message

swap.cpp: In function 'void init(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
swap.cpp:89:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   89 |     for(int i=0;i<edges.size();i++)
      |                 ~^~~~~~~~~~~~~

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2652 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 3 ms 2908 KB Output is correct
6 Correct 2 ms 2908 KB Output is correct
7 Correct 2 ms 2908 KB Output is correct
8 Correct 4 ms 2908 KB Output is correct
9 Correct 33 ms 9928 KB Output is correct
10 Correct 38 ms 11472 KB Output is correct
11 Correct 65 ms 11464 KB Output is correct
12 Correct 53 ms 11972 KB Output is correct
13 Execution timed out 2061 ms 8648 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2652 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Incorrect 115 ms 12072 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2652 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 3 ms 2908 KB Output is correct
6 Correct 2 ms 2908 KB Output is correct
7 Correct 2 ms 2908 KB Output is correct
8 Correct 4 ms 2908 KB Output is correct
9 Incorrect 2 ms 2648 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 2648 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2652 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 3 ms 2908 KB Output is correct
6 Correct 2 ms 2908 KB Output is correct
7 Correct 2 ms 2908 KB Output is correct
8 Correct 4 ms 2908 KB Output is correct
9 Correct 33 ms 9928 KB Output is correct
10 Correct 38 ms 11472 KB Output is correct
11 Correct 65 ms 11464 KB Output is correct
12 Correct 53 ms 11972 KB Output is correct
13 Execution timed out 2061 ms 8648 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 2648 KB Output isn't correct
2 Halted 0 ms 0 KB -