Submission #320107

#	Time	Username	Problem	Language	Result	Execution time	Memory
320107		NicolaAbusaad2014	Jakarta Skyscrapers (APIO15_skyscraper)	C++14	0 / 100	1 ms	492 KiB

skyscraper

/**
 * Prof.Nicola
**/
#include <bits/stdc++.h>

using namespace std;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    long long n,m;
    cin>>n>>m;
    long long skyscraper[m],jumps[m];
    vector<long long>vis(m,-1e9);
    for(long i=0;i<m;i++){
        cin>>skyscraper[i]>>jumps[i];
    }
    if(skyscraper[0]==skyscraper[1]){
        cout<<0<<endl;
    }
    else{
    priority_queue<pair<long long,long> >pq;
    pq.push(make_pair(0,0));
    long long cost,doge,pos,x;
    while(!pq.empty()){
        cost=pq.top().first;
        doge=pq.top().second;
        pos=skyscraper[doge];
        if(cost>vis[doge]){
        vis[doge]=cost;
        for(long i=0;i<m;i++){
            x=abs(skyscraper[i]-pos);
            if(cost-(x/jumps[doge])>vis[i]&&x%jumps[doge]==0){
                pq.push(make_pair(cost-(x/jumps[doge]),i));
            }
        }
        }
        pq.pop();
    }
    if(vis[1]==0){
        cout<<-1<<endl;
    }
    else{
        cout<<-vis[1]<<endl;
    }
    }
    return 0;
}

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