Submission #553260

#	Time	Username	Problem	Language	Result	Execution time	Memory
553260		ala2	Jakarta Skyscrapers (APIO15_skyscraper)	C++14	36 / 100	1075 ms	88220 KiB

skyscraper

#include <bits/stdc++.h>
#define int long long
#define F first
#define S second
#define pb push_back
#define B begin()
#define E end()

using namespace std;
int a[1001000];
int b[1001000];
vector<pair<int,int>>v[1001000];
int dist(int i,int j)
{
    return abs(a[j]-a[i]);
}
int dis[1001000];
const int inf=1e17;
signed main()
{

    int n,m;
    cin>>n>>m;
    for(int i=1;i<=m;i++)
    {
        cin>>a[i]>>b[i];
    }
    for(int i=1;i<=m;i++)
    {
        for(int j=1;j<=m;j++)
        {
            if(j==i)
                continue;
            if( dist(i,j)%b[i]==0 ){
        //            cout<<"     "<<i<<"   "<<j<<endl;
                v[i].pb({j,dist(i,j)/b[i]});
            }
        }
    }
    for(int i=2;i<=m;i++)
    {
        dis[i]=inf;
    }
    priority_queue<pair<int,int>,vector<pair<int,int>>,greater<pair<int,int>>>q;
    q.push({0,1});
    while(!q.empty())
    {
      //  cout<<"D";
        pair<int,int>x=q.top();
        q.pop();
       // cout<<"      ::::   "<<x.S<<endl;
        for(auto i:v[x.S])
        {
            int ned=x.F+i.S;            //    cout<<"         "<<i.F<<"   "<<ned<<endl;

            if(ned<dis[i.F])
            {
                dis[i.F]=ned;
                q.push({ned,i.F});
            }
        }


    }
    if(dis[2]<inf)
    cout<<dis[2]<<endl;
    else cout<<-1<<endl;

}

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