제출 #1273659

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1273659		vtnoo	Cyberland (APIO23_cyberland)	C++20	컴파일 에러	0 ms	0 KiB

cyberland

#include "cyberland.h"

#include <bits/stdc++.h>
using namespace std;

const int MAXN=100000;
vector<vector<pair<int,double>>> adj;
bool alc[MAXN], vis[MAXN];

void dfs(int u, const int& ban){
    alc[u]=true;
    for(auto [v,t]:adj[u]){
        if(v==ban)continue;
        if(!alc[v]){
            dfs(v, ban);
        }
    }
}

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) {
    memset(alc, 0, sizeof(alc));
    memset(vis, 0, sizeof(vis));
    adj.clear();
    adj.resize(N);
    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]});
    }
    dfs(0,H);
    set<pair<double,int>> q;
    q.insert({0,0});
    double op1=1e18, op2=1e18;
    while(!q.empty()){
        auto [d,u]=*q.begin();
        q.erase(q.begin());
        vis[u]=true;
        if(u==H){
            op1=d;
            break; 
        }
        for(auto [v,t]:adj[u]){
            if(!vis[v]){
                q.insert({d+t,v});
            }
        }
    }
    set<tuple<double,int,int>> q2;
    q2.insert({0,0,H}); 
    vector<vector<double>> dist(N, vector<double>(K+1, 1e18));
    dist[H][0]=0;
    double op2=1e18;
    while(!q2.empty()){
        auto [d,k,u]=*q2.begin();
        q2.erase(q2.begin());
        if(arr[u]==0){
            op2=min(op2, d);
            continue;
        }
        for(auto [v,t]:adj[u]){
            if(alc[v]){
                if(arr[v]==2&&k+1<=K){
                    if(dist[v][k+1]>(dist[u][k]+t)/2){
                        dist[v][k+1]=(dist[u][k]+t)/2;
                        q2.insert({dist[v][k+1],k+1,v});
                    }
                }
                if(dist[v][k]>dist[u][k]+t){
                    dist[v][k]=dist[u][k]+t;
                    q2.insert({dist[v][k],k,v});
                }
            }
        }
    }
    if(op1==1e18)return -1;
    if(tar==-1){
        return *min_element(dist[0].begin(), dist[0].end());
    }
    return min(*min_element(dist[0].begin(), dist[0].end()), op2);
}

컴파일 시 표준 에러 (stderr) 메시지

cyberland.cpp: In function 'double solve(int, int, int, int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
cyberland.cpp:51:12: error: redeclaration of 'double op2'
   51 |     double op2=1e18;
      |            ^~~
cyberland.cpp:32:22: note: 'double op2' previously declared here
   32 |     double op1=1e18, op2=1e18;
      |                      ^~~
cyberland.cpp:75:8: error: 'tar' was not declared in this scope; did you mean 'tan'?
   75 |     if(tar==-1){
      |        ^~~
      |        tan