oj.uz

Submission #984752

# Submission time Handle Problem Language Result Execution time Memory
984752 2024-05-17T04:35:53 Z Muhammad_Aneeq Cyberland (APIO23_cyberland) C++17
8 / 100
 40 ms 15696 KB 
#include "cyberland.h"
#include <vector>
#include <map>
#include <set>
#include <iostream>
using namespace std;
int const MAXN=1e5+10;
vector<pair<int,int>>nei[MAXN];
long long par[MAXN],val[MAXN];
bool vis[MAXN]={},ra[MAXN]={};
int h;
map<pair<int,int>,int>d;
void dfs(int x)
{
    ra[x]=1;
    vis[x]=1;
    for (auto [i,j]:nei[x])
    {
        if (!vis[i]&&i!=h)
            dfs(i);
    }
}
vector<int>p;
int k;
double ans=1e15+10;
void dfs1(int x)
{
    vis[x]=1;
    p.push_back(x);
    if (val[x]==0||x==0)
    {
        double su=0;
        vector<int>va;
        for (int i=p.size()-1;i>=0;i--)
        {
            if (val[p[i]]==2)
                va.push_back(p[i]);
        }
        int x=max(0,int(va.size()-k));
        bool w=0;
        for (int i=p.size()-1;i>=1;i--)
        {
            if (va.size()&&p[i-1]==va[x])
                w=1;
            su+=d[{p[i],p[i-1]}];
            if (w&&val[p[i-1]]==2)
                su/=2.0;
        }
        ans=min(ans,su);
        if (p.size())
            p.pop_back();
        return;
    }
    for (auto [i,j]:nei[x])
    {
        if (ra[i]&&!vis[i])
            dfs1(i);
    }
    if (p.size())
        p.pop_back();
}
double solve(int N, int M, int K, int H, vector<int> x, vector<int> y, vector<int> c, vector<int> arr) 
{
    h=H;
    k=K;
    ans=1e15+10;
    d={};
    for (int i=0;i<N;i++)
    {
        nei[i]={};
        par[i]=-1;
        val[i]=arr[i];
        vis[i]=0;
    }
    for (int i=0;i<x.size();i++)
    {   
        d[{x[i],y[i]}]=d[{y[i],x[i]}]=c[i];
        nei[x[i]].push_back({y[i],c[i]});
        nei[y[i]].push_back({x[i],c[i]});
    }
    dfs(0);
    for (int i=0;i<N;i++)
        vis[i]=0;
    dfs1(h);
    if (ans==1e15+10)
        return -1;
    return ans;
}

Compilation message

cyberland.cpp: In function 'double solve(int, int, int, int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
cyberland.cpp:75:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |     for (int i=0;i<x.size();i++)
      |                  ~^~~~~~~~~

Subtask #1
0.0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 15 ms 4440 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 4440 KB Correct.
2 Correct 27 ms 4644 KB Correct.
3 Correct 28 ms 4696 KB Correct.
4 Correct 27 ms 4444 KB Correct.
5 Correct 29 ms 4664 KB Correct.
6 Correct 26 ms 6228 KB Correct.
7 Correct 36 ms 6232 KB Correct.
8 Correct 19 ms 8148 KB Correct.
9 Correct 26 ms 4712 KB Correct.
10 Correct 23 ms 4444 KB Correct.

Subtask #3
0.0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 25 ms 4444 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #4
0.0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 40 ms 15696 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #5
0.0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 28 ms 4700 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #6
0.0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 34 ms 4700 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #7
0.0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 37 ms 4696 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #8
0.0 / 3.0

# Verdict Execution time Memory Grader output
1 Incorrect 39 ms 4696 KB Wrong Answer.
2 Halted 0 ms 0 KB -