Submission #1040243

#	Time	Username	Problem	Language	Result	Execution time	Memory
1040243		dpsaveslives	Jakarta Skyscrapers (APIO15_skyscraper)	C++17	10 / 100	1077 ms	484 KiB

skyscraper

#include <bits/stdc++.h>
#define f first
#define s second
#define ll long long
using namespace std;
int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int N,M; cin >> N >> M;
    vector<pair<int,int>> doges(M);
    for(int i = 0;i<M;++i){
        cin >> doges[i].f >> doges[i].s;
    }
    priority_queue<pair<ll,int>> pq; pq.push({0,1});
    vector<ll> dist(M,-1); dist[1] = 0;
    while(!pq.empty()){
        int j = pq.top().s, cd = pq.top().f; pq.pop();
        if(dist[j] != cd) continue;
        for(int i = 0;i<M;++i){
            if(i == j) continue;
            if(doges[i].f == doges[j].f){
                if(cd < dist[i] || dist[i] == -1){
                    dist[i] = cd;
                    pq.push({dist[i],i});
                }
                continue;
            }
            if((abs(doges[j].f-doges[i].f)) % doges[i].s == 0){
                ll x = abs(doges[j].f-doges[i].f)/doges[i].s;
                if(x+cd < dist[i] || dist[i] == -1){
                    dist[i] = x+cd;
                    pq.push({dist[i],i});
                }
            }
        }
    }
    cout << dist[0] << "\n";
    return 0;
}

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