Submission #443792

#	Time	Username	Problem	Language	Result	Execution time	Memory
443792		impri	Jakarta Skyscrapers (APIO15_skyscraper)	C++14	57 / 100	875 ms	64580 KiB

skyscraper

#include<bits/stdc++.h>
using namespace std;
long long graph[2001][2001];
int main(void){
int n,m;
int arr[30001][2];
cin >> n >> m;
for(int i=0;i<m;i++)
    cin >> arr[i][0] >> arr[i][1];
for(int i=0;i<n;i++)
    for(int j=0;j<n;j++)
    graph[i][j]=10e13;
for(int i=0;i<m;i++){
    for(int j=0;j<n;j++){
        if(abs(arr[i][0]-j)%arr[i][1]==0){
            graph[arr[i][0]][j]=min(graph[arr[i][0]][j],1LL*abs(arr[i][0]-j)/arr[i][1]);
        }
    }
}
long long dist[2001];

for(int i=0;i<n;i++)
    dist[i]=10e14;
dist[arr[0][0]]=0;
priority_queue<pair<long long,int> >q;
q.push({0,arr[0][0]});
while(!q.empty()){
    int cur=q.top().second;
    long long curdist=-q.top().first;
    q.pop();

    for(int i=0;i<n;i++){


         long long nxtdist=graph[cur][i];
         if(curdist+nxtdist<dist[i]){
          dist[i]=curdist+nxtdist;
          q.push({-dist[i],i});

         }
    }
}
if(dist[arr[1][0]]>10e12)cout << -1;
else
cout << dist[arr[1][0]];

}

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