Submission #478946

#	Time	Username	Problem	Language	Result	Execution time	Memory
478946		IvnF	Jakarta Skyscrapers (APIO15_skyscraper)	C++14	10 / 100	2 ms	1176 KiB

skyscraper

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define ull unsigned long long
#define fi first
#define se second
#define ld long double
ll n, m, dist[30005];
vector<pair<ll, ll>>edge[30005];

struct struk{
	ll b, p;
}; struk arr[30005];

int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin >> n >> m;
	for(int i=1;i<=n;++i) dist[i]=4e18;
	for(int i=1;i<=m;++i){
		cin >> arr[i].b >> arr[i].p;
		arr[i].b++;
	}
	for(int i=1;i<=m;++i){
		for(int j=1;j<=m;++j){
			if(j == i) continue;
			if(abs(arr[j].b - arr[i].b) % arr[i].p == 0){
				edge[i].pb({j, abs(arr[j].b - arr[i].b) / arr[i].p});
			}
		}
	}
	priority_queue<pair<ll, ll>, vector<pair<ll, ll>>, greater<pair<ll, ll>>>pq;
	pq.push({0, 1});
	dist[1]=0;
	while(!pq.empty()){
		ll gerak=pq.top().fi, idx=pq.top().se;
		pq.pop();
		for(auto x:edge[idx]){
			if(dist[x.fi] > gerak+x.se){
				dist[x.fi] = gerak+x.se;
				pq.push({dist[x.fi], x.fi});
			}
		}
	}
	cout << (dist[2] == 4e18 ? -1 : dist[2]) << '\n';
}

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