제출 #787869

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
787869		andecaandeci	Jakarta Skyscrapers (APIO15_skyscraper)	C++17	57 / 100	1087 ms	4868 KiB

skyscraper

#include<bits/stdc++.h>
#define ll long long
#define fi first
#define sec second
#define pb push_back
#define pqueue priority_queue
#define int long long
#define pii pair<int,int>
#define supercepat ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(0);
using namespace std;
int tc,ans=0,n,m;
int b[30005],p[30005];
vector<int> vec[30005];
pqueue<pii> a;
int dis[30005];
void djikstra(int x){
  a.push(pii(0,x));
  while(!a.empty()){
    int idx=a.top().sec; // nomor gedung
    if(idx==b[1]) break;
    int dist=-1*a.top().fi;
    a.pop();
    if(dis[idx]<dist){
      continue;
    }
    else{
        for(auto i : vec[idx]){
          for(int j = idx+p[i];j<n;j+=p[i]){
              if(dis[j]>dist+(abs(j-idx)/p[i])){
            dis[j]=dist+(abs(j-idx)/p[i]);
                  a.push(pii(-1*dis[j],j));
                }
            }
            for(int j = idx-p[i];j>=0;j-=p[i]){
              if(dis[j]>dist+(abs(j-idx)/p[i])){
            dis[j]=dist+(abs(j-idx)/p[i]);
                    a.push(pii(-1*dis[j],j));
              }
            }
        }
    }
  }
}
main(){
  supercepat;
  cin>>n>>m;
  for(int i=0;i<n;i++) dis[i]=INT_MAX;
  for(int i=0;i<m;i++){
    cin>>b[i]>>p[i];
    vec[b[i]].pb(i);
  }
    dis[b[0]]=0;
  djikstra(b[0]);
  if(dis[b[1]]==INT_MAX) cout<<-1<<endl;
  else cout<<dis[b[1]]<<endl;
}

컴파일 시 표준 에러 (stderr) 메시지

skyscraper.cpp:44:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   44 | main(){
      | ^~~~

• Subtask 1: 10 / 10
• Subtask 2: 12 / 12
• Subtask 3: 14 / 14
• Subtask 4: 21 / 21
• Subtask 5: 0 / 43