Submission #1183518

#	Time	Username	Problem	Language	Result	Execution time	Memory
1183518		Aviansh	Cyberland (APIO23_cyberland)	C++20	68 / 100	3038 ms	146344 KiB

cyberland

#include "cyberland.h"

#include <bits/stdc++.h>

using namespace std;

double solve(int n, int m, int k, int h, std::vector<int> x, std::vector<int> y, std::vector<int> c, std::vector<int> arr) {
    const int mxk = 33;
    k=min(k,mxk-1);
    double tim[n][mxk];
    for(int i = 0;i<n;i++){
        for(int j = 0;j<mxk;j++){
            tim[i][j]=2e18;
        }
    }
    vector<array<int,2>>g[n];
    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]});
    }
    priority_queue<tuple<double,int,int>,vector<tuple<double,int,int>>,greater<tuple<double,int,int>>>pq;
    pq.push({0,0,0});
    //{time,index,usedk}
    while(!pq.empty()){
        tuple<double,int,int>curr = pq.top();
        pq.pop();
        if(tim[get<1>(curr)][get<2>(curr)]<=get<0>(curr)){
            continue;
        }
        tim[get<1>(curr)][get<2>(curr)]=get<0>(curr);
        if(get<1>(curr)==h)
            continue;
        for(array<int,2>e:g[get<1>(curr)]){
            if(arr[get<1>(curr)]==0){
                pq.push({e[1],e[0],0});
            }
            else {
                pq.push({get<0>(curr)+e[1],e[0],get<2>(curr)});
                if(arr[get<1>(curr)]==2&&get<2>(curr)<k){
                    pq.push({(get<0>(curr)/2)+e[1],e[0],get<2>(curr)+1});
                }
            }
        }
    }
    double ans = 2e18;
    for(int i = 0;i<mxk;i++){
        ans=min(ans,tim[h][i]);
    }
    if(ans==2e18){
        return -1;
    }
    else{
        return ans;
    }
}

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