oj.uz

Submission #986656

# Submission time Handle Problem Language Result Execution time Memory
986656 2024-05-21T02:02:48 Z CSQ31 Cyberland (APIO23_cyberland) C++17
44 / 100
 104 ms 51588 KB 
#include "cyberland.h"
#include<bits/stdc++.h>
using namespace std;
 
typedef long double ld;
ld dist[31][111111];
ld pw[31];
struct node{
    int v,k;
    ld dist = 0;
    node(int _v,int _k,ld _dist = 0){
        v = _v;
        k = _k;
        dist = _dist;
    }
};
 
struct comp
{
    bool operator() (node const &a, node const &b) { return a.dist - b.dist > 1e-7; }
};
vector<pair<int,int>>adj[111111];
double solve(int n, int m,int K, int H, vector<int> x, vector<int> y, vector<int> c, vector<int> arr){
    priority_queue<node,vector<node>,comp>pq;
    for(int j=0;j<n;j++){
        adj[j].clear();
        for(int i=0;i<=30;i++){
            dist[i][j] = 1e15;
        }
    }
    pw[0] = 1;
    for(int i=1;i<=30;i++)pw[i] = pw[i-1]*2;
    for(int i=0;i<m;i++){
        adj[x[i]].push_back({y[i],c[i]});
        adj[y[i]].push_back({x[i],c[i]});
    }
 
    dist[0][H] = 0;
    pq.push(node(H,0));
    while(!pq.empty()){
        node tmp = pq.top();
        int v = tmp.v;
        int k = tmp.k;
        //cout<<v<<" "<<k<<" "<<tmp.dist<<" "<<dist[k][v]<<'\n';
        pq.pop();
        if(abs(tmp.dist - dist[k][v]) > 1e-7)continue;
        if(arr[v] == 0)continue;
 
        for(pair<int,int>x : adj[v]){
            int u = x.first;
            ld w = x.second/pw[k];
            if(dist[k][u] - dist[k][v] - w > 1e-7){
                dist[k][u] = dist[k][v] + w;
                pq.push(node(u,k,dist[k][u]));
            }
            if(arr[u] == 2 && k+1 <= K){
                if(dist[k+1][u] - dist[k][v] - w > 1e-7){
                    dist[k+1][u] = dist[k][v] + w;
                    pq.push(node(u,k+1,dist[k+1][u]));
                }
 
            }
        }
    }
    ld ans = 1e18;
    for(int i=0;i<=K;i++)ans = min(ans,dist[i][0]);
    queue<int>q;
    vector<int>vis(n,0);
    q.push(0);
    vis[0] = 1;
    while(!q.empty()){
        int v = q.front();
        q.pop();
        if(arr[v] == 0){
            for(int i=0;i<=K;i++)ans = min(ans,dist[i][v]);   
        }
      if(v==H)continue;
        for(pair<int,int>x:adj[v]){
            int u = x.first;
            if(!vis[u]){
                q.push(u);
                vis[u] = 1;
            }
        }
    }
    if(!vis[H])return -1;
    return ans;
}

Subtask #1
0.0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 33 ms 19540 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 17496 KB Correct.
2 Correct 32 ms 18664 KB Correct.
3 Correct 29 ms 16692 KB Correct.
4 Correct 32 ms 18688 KB Correct.
5 Correct 32 ms 18520 KB Correct.
6 Correct 32 ms 22152 KB Correct.
7 Correct 35 ms 22368 KB Correct.
8 Correct 18 ms 27480 KB Correct.
9 Correct 31 ms 20060 KB Correct.
10 Correct 29 ms 20068 KB Correct.

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 17500 KB Correct.
2 Correct 34 ms 18864 KB Correct.
3 Correct 28 ms 17884 KB Correct.
4 Correct 39 ms 18176 KB Correct.
5 Correct 32 ms 20212 KB Correct.
6 Correct 9 ms 20572 KB Correct.

Subtask #4
0.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 42720 KB Correct.
2 Incorrect 28 ms 20704 KB Wrong Answer.
3 Halted 0 ms 0 KB -

Subtask #5
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 17756 KB Correct.
2 Correct 29 ms 18772 KB Correct.
3 Correct 28 ms 18524 KB Correct.
4 Correct 31 ms 22224 KB Correct.
5 Correct 27 ms 17756 KB Correct.

Subtask #6
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 19548 KB Correct.
2 Correct 25 ms 18524 KB Correct.
3 Correct 60 ms 51588 KB Correct.
4 Correct 23 ms 22876 KB Correct.
5 Correct 28 ms 18012 KB Correct.
6 Correct 26 ms 18680 KB Correct.

Subtask #7
0.0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 104 ms 20128 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #8
0.0 / 3.0

# Verdict Execution time Memory Grader output
1 Runtime error 19 ms 39000 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -