Submission #1065780

#	Time	Username	Problem	Language	Result	Execution time	Memory
1065780		Muhammet	Cyberland (APIO23_cyberland)	C++17	0 / 100	23 ms	5980 KiB

cyberland

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

using namespace std;

#define ff first
#define ss second

double solve(int n, int m, int k, int h, vector<int> x, vector<int> y, vector<int> c, vector<int> arr) {
    vector <pair<int,int>> v[n+5];

    for(int i = 0; i < m; i++){
        v[x[i]].push_back({y[i],c[i]});
        v[y[i]].push_back({x[i],c[i]});
    }
    priority_queue <pair<double,pair<int,int>>> q;
    vector <double> dis(n+5,1e9);
    vector <int> dis1(n+5,k+1);
    dis[0] = 0;
    dis1[0] = 0;
    q.push({0,{0,0}});
    while(!q.empty()){
        auto [ind,kcur] = q.top().ss;
        double w = q.top().ff;
        q.pop();
        if(w < 0) w *= (-1);
        dis[ind] = min(dis[ind],w);
        if(h == ind) continue;
        double w2 = w;
        for(auto [i,j] : v[ind]){
            w = w2;
            if(arr[i] == 0){
                w = 0;
                if(dis[i] > 0){
                    dis1[i] = min(dis1[i],kcur);
                    dis[i] = min(w,dis[i]);
                    q.push({0,{i,kcur}});
                }
            }
            else if(arr[i] == 2){
                w += j;
                double w1 = w;
                if(kcur < k){
                    w /= 2;
                    kcur++;
                    if(dis[i] > w){
                        dis[i] = min(w,dis[i]);
                        dis1[i] = min(dis1[i],kcur);
                        q.push({-w,{i,kcur}});
                    }
                    kcur--;
                }
                w = w2;
                if(dis[i] > w){
                    dis[i] = min(w,dis[i]);
                    dis1[i] = min(dis1[i],kcur);
                    q.push({-w,{i,kcur}});
                }
            }
            else {
                w += j;
                if(w < dis[i]){
                    dis[i] = min(w,dis[i]);
                    dis1[i] = min(dis1[i],kcur);
                    q.push({-w,{i,kcur}});
                }
            }
        }
    }


    if(dis[h] == 1e9) return -1;
    return dis[h];
}

Compilation message (stderr)

cyberland.cpp: In function 'double solve(int, int, int, int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
cyberland.cpp:43:24: warning: unused variable 'w1' [-Wunused-variable]
   43 |                 double w1 = w;
      |                        ^~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 8
• Subtask 3: 0 / 13
• Subtask 4: 0 / 19
• Subtask 5: 0 / 7
• Subtask 6: 0 / 16
• Subtask 7: 0 / 29
• Subtask 8: 0 / 3