oj.uz

Submission #773229

# Submission time Handle Problem Language Result Execution time Memory
773229 2023-07-04T17:10:37 Z JakobZorz Cyberland (APIO23_cyberland) C++17
68 / 100
 75 ms 17652 KB 
#include "cyberland.h"
#include <vector>
#include <iostream>
#include <limits.h>
#include <queue>
#include <algorithm>
typedef long long ll;
typedef double lld;
const lld MAX_DIST=10000000000000000000000000.0;
using namespace std;

int n,m,k,h;
vector<pair<int,lld>>nodes[100000];
lld dist[100000];
lld old_dist[100000];
bool vis[100000];

void dfs(int node){
    if(vis[node])
        return;
    vis[node]=true;
    if(node==h)
        return;
    for(pair<int,lld>ne:nodes[node]){
        dfs(ne.first);
    }
}

double solve(int N,int M,int K,int H,vector<int>x,vector<int>y,vector<int>c,vector<int>arr){
    n=N;
    m=M;
    k=K;
    h=H;
    for(int i=0;i<n;i++){
        nodes[i].clear();
        dist[i]=MAX_DIST;
        vis[i]=false;
    }
    for(int i=0;i<m;i++){
        nodes[x[i]].emplace_back(y[i],c[i]);
        nodes[y[i]].emplace_back(x[i],c[i]);
    }
    dfs(0);
    dist[0]=0;
    queue<int>q;
    q.push(0);
    if(!vis[h])
        return -1;
    for(int i=0;i<n;i++){
        if(arr[i]==0&&vis[i]){
            dist[i]=0;
            q.push(i);
        }
    }
    
    k++;
    k=min(100,k);
    
    while(k--){
        while(!q.empty()){
            int curr=q.front();
            q.pop();
            if(curr==h)
                continue;
            for(pair<int,lld>ne:nodes[curr]){
                lld new_dist=dist[curr]+ne.second;
                if(new_dist<dist[ne.first]){
                    dist[ne.first]=new_dist;
                    q.push(ne.first);
                }
            }
        }
        
        for(int i=0;i<n;i++)
            old_dist[i]=dist[i];
        
        for(int i=0;i<n;i++){
            if(arr[i]==2&&vis[i]){
                for(pair<int,lld>ne:nodes[i]){
                    lld new_dist=old_dist[i]/2.0+ne.second;
                    if(new_dist<dist[ne.first]){
                        dist[ne.first]=new_dist;
                        q.push(ne.first);
                    }
                }
            }
        }
        
        if(q.empty())
            break;
    }
    
    return dist[h];
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 2900 KB Correct.
2 Correct 21 ms 3060 KB Correct.

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 3220 KB Correct.
2 Correct 18 ms 3704 KB Correct.
3 Correct 19 ms 3672 KB Correct.
4 Correct 18 ms 3708 KB Correct.
5 Correct 19 ms 3828 KB Correct.
6 Correct 17 ms 4532 KB Correct.
7 Correct 29 ms 4584 KB Correct.
8 Correct 10 ms 4976 KB Correct.
9 Correct 18 ms 3448 KB Correct.
10 Correct 27 ms 3404 KB Correct.

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 3696 KB Correct.
2 Correct 21 ms 3660 KB Correct.
3 Correct 17 ms 3684 KB Correct.
4 Correct 19 ms 2992 KB Correct.
5 Correct 19 ms 3536 KB Correct.
6 Correct 6 ms 3528 KB Correct.

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 9656 KB Correct.
2 Correct 21 ms 3616 KB Correct.
3 Correct 19 ms 3728 KB Correct.
4 Correct 20 ms 3668 KB Correct.
5 Correct 20 ms 3512 KB Correct.

Subtask #5
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 3796 KB Correct.
2 Correct 21 ms 3872 KB Correct.
3 Correct 18 ms 3844 KB Correct.
4 Correct 19 ms 5128 KB Correct.
5 Correct 18 ms 3440 KB Correct.

Subtask #6
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 3684 KB Correct.
2 Correct 16 ms 3616 KB Correct.
3 Correct 34 ms 11212 KB Correct.
4 Correct 13 ms 4344 KB Correct.
5 Correct 18 ms 3572 KB Correct.
6 Correct 18 ms 3504 KB Correct.

Subtask #7
0.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 3820 KB Correct.
2 Correct 5 ms 3060 KB Correct.
3 Incorrect 67 ms 14532 KB Wrong Answer.
4 Halted 0 ms 0 KB -

Subtask #8
0.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 3572 KB Correct.
2 Correct 5 ms 3080 KB Correct.
3 Correct 75 ms 17652 KB Correct.
4 Incorrect 47 ms 5708 KB Wrong Answer.
5 Halted 0 ms 0 KB -