Submission #199568

#	Time	Username	Problem	Language	Result	Execution time	Memory
199568		handlename	Jakarta Skyscrapers (APIO15_skyscraper)	C++17	22 / 100	1094 ms	49872 KiB

skyscraper

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
int n,m,s,e;
vector<pair<int,int> > adj[30001];
int dist[30001];
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin>>n>>m;
    for (int i=0;i<m;i++){
        int b,p;
        cin>>b>>p;
        if (i==0) s=b;
        if (i==1) e=b;
        int dis=1;
        for (int j=b+p;j<n;j+=p){
            adj[b].pb(mp(j,dis));
            dis++;
        }
        dis=1;
        for (int j=b-p;j>=0;j-=p){
            adj[b].pb(mp(j,dis));
            dis++;
        }
    }
    memset(dist,-1,sizeof(dist));
    priority_queue<pair<int,int>,vector<pair<int,int> >,greater<pair<int,int> > >pq;
    pq.push(mp(0,s));
    while (!pq.empty()){
        pair<int,int> cur=pq.top();
        pq.pop();
        if (dist[cur.second]!=-1) continue;
        dist[cur.second]=cur.first;
        for (auto i:adj[cur.second]){
            pq.push(mp(cur.first+i.second,i.first));
        }
    }
    cout<<dist[e];
}

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