Submission #972629

#	Time	Username	Problem	Language	Result	Execution time	Memory
972629		TheSahib	Cyberland (APIO23_cyberland)	C++17	Compilation error	0 ms	0 KiB

cyberland

#include "cyberland.h"
#include <bits/stdc++.h>

#define ll long long
#define pii pair<int, int>
using namespace std;
 
const ll oo = 1e18;
const int MAX = 1e5 + 5;
const int MAXK = 70;
const int LOGMAX = 10;
 
struct edge{
    int u, c;
};
 
int n, k, f;
int A[MAX];
vector<edge> g[MAX];
bool visited[MAX];
 
vector<int> starts;
void dfs(int node){
    visited[node] = 1;
    for(auto& e:g[node]){
        if(visited[e.u]) continue;
        dfs(e.u);
    }
}
 
double dist[MAXK + 1][MAX];
priority_queue<pair<double, int>> st;
void dijkstra(){
    for (int j = 0; j <= k; j++)
    {
        for (int i = 0; i < n; i++)
        {
            dist[j][i] = oo;
        }
    }
    
    for(int a:starts){
        dist[k][a] = 0;
        st.push({0, a << LOGMAX + k});
    }
    while(!st.empty()){
        double d = -st.top().first;
        int node = st.top().second >> LOGMAX;
        int l = st.top().second - (node << LOGMAX);
        st.pop();
        if(dist[l][node] < d) continue;
 
        for(auto& e:g[node]){
            double b = d + e.c;
            
            if(b < dist[l][e.u]){
                dist[l][e.u] = b;
                st.push({-dist[l][e.u], {e.u, l}});
            }
            if(l == 0 || A[e.u] != 2) continue;
            if(b / 2 < dist[l - 1][e.u]){
                dist[l - 1][e.u] = b / 2;
                st.push({-dist[l - 1][e.u], (e.u << LOGMAX) + (l - 1)});
            }
        }
    }
}
 
 
double solve(int N, int M, int K, int H, vector<int> x, vector<int> y, vector<int> c, vector<int> arr) {
    n = N;
    k = min(MAXK, K);
    f = H;
    starts.clear();
    for (int i = 0; i < n; i++)
    {
        A[i] = arr[i];
        g[i].clear();
        visited[i] = 0;
    }
    
    for (int i = 0; i < M; i++)
    {
        g[x[i]].push_back({y[i], c[i]});
        g[y[i]].push_back({x[i], c[i]});
    }
    g[f].clear();
    dfs(0);
    starts.push_back(0);
    for (int i = 0; i < n; i++)
    {
        if(visited[i] && A[i] == 0){
            starts.push_back(i);
        }
    }
    dijkstra();
    double ans = oo;
    for(int i = 0; i <= k; ++i){
        ans = min(ans, dist[i][f]);
    }
    if(ans == oo){
        return -1;
    }
    else{
        return ans;
    }
}

Compilation message (stderr)

cyberland.cpp: In function 'void dijkstra()':
cyberland.cpp:44:33: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   44 |         st.push({0, a << LOGMAX + k});
      |                          ~~~~~~~^~~
cyberland.cpp:58:50: error: no matching function for call to 'std::priority_queue<std::pair<double, int> >::push(<brace-enclosed initializer list>)'
   58 |                 st.push({-dist[l][e.u], {e.u, l}});
      |                                                  ^
In file included from /usr/include/c++/10/queue:64,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:86,
                 from cyberland.cpp:2:
/usr/include/c++/10/bits/stl_queue.h:640:7: note: candidate: 'void std::priority_queue<_Tp, _Sequence, _Compare>::push(const value_type&) [with _Tp = std::pair<double, int>; _Sequence = std::vector<std::pair<double, int>, std::allocator<std::pair<double, int> > >; _Compare = std::less<std::pair<double, int> >; std::priority_queue<_Tp, _Sequence, _Compare>::value_type = std::pair<double, int>]'
  640 |       push(const value_type& __x)
      |       ^~~~
/usr/include/c++/10/bits/stl_queue.h:640:30: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const value_type&' {aka 'const std::pair<double, int>&'}
  640 |       push(const value_type& __x)
      |            ~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_queue.h:648:7: note: candidate: 'void std::priority_queue<_Tp, _Sequence, _Compare>::push(std::priority_queue<_Tp, _Sequence, _Compare>::value_type&&) [with _Tp = std::pair<double, int>; _Sequence = std::vector<std::pair<double, int>, std::allocator<std::pair<double, int> > >; _Compare = std::less<std::pair<double, int> >; std::priority_queue<_Tp, _Sequence, _Compare>::value_type = std::pair<double, int>]'
  648 |       push(value_type&& __x)
      |       ^~~~
/usr/include/c++/10/bits/stl_queue.h:648:25: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::priority_queue<std::pair<double, int> >::value_type&&' {aka 'std::pair<double, int>&&'}
  648 |       push(value_type&& __x)
      |            ~~~~~~~~~~~~~^~~