oj.uz

Submission #695250

# Submission time Handle Problem Language Result Execution time Memory
695250 2023-02-04T20:25:59 Z Cyber_Wolf Jakarta Skyscrapers (APIO15_skyscraper) C++17
10 / 100
 9 ms 14548 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

#define lg long long
#define fastio ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
//Jakarta Skyscraper

const lg N  = 300005;

lg dist[N], in_queue[N];
vector<pair<lg, lg>> adj[N];
vector<lg> b(N), p(N);

void dijkstra(lg src)
{
	priority_queue<array<lg, 2>> pq;
	pq.push({0, src});
	in_queue[src] = 1;
	memset(dist, 0x3f, sizeof(dist));
	dist[src] = 0;
	while(pq.size())
	{
		lg x = pq.top()[1];
		in_queue[x] = 0;
		pq.pop();
		for(auto [it, c] : adj[x])
		{
			if(dist[it] > dist[x]+c)
			{
				dist[it] = dist[x]+c;
				if(!in_queue[it])	pq.push({-dist[it], it});
				in_queue[it] = true;
			}
		}
	}
	return;
}


int main()
{
	fastio;
	lg n, m;
	cin >> n >> m;
	for(int i = 0; i < m; i++)
	{
		cin >> b[i] >> p[i];
	} 
	map<array<lg, 2>, lg> mp;
	for(int i = 0; i < m; i++)
	{
		lg x = b[i]%p[i];
		if(mp[{x, b[i]}])	continue;
		// cout << i << ' ';
		mp[{x, b[i]}] = true;
		for(int j = x; j < n; j += p[i])
		{
			if(j == b[i])	continue;
			adj[b[i]].push_back({j, abs(b[i]-j)/p[i]});
		}
	}
	dijkstra(b[0]);
	if(dist[b[1]] == dist[N-1])
	{
		cout << "-1\n";
		return 0;
	}
	cout << dist[b[1]] << '\n';

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 7 ms 14376 KB Output is correct
3 Correct 6 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 7 ms 14420 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 6 ms 14364 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 14420 KB Output is correct
2 Correct 6 ms 14360 KB Output is correct
3 Correct 6 ms 14408 KB Output is correct
4 Correct 6 ms 14420 KB Output is correct
5 Correct 7 ms 14420 KB Output is correct
6 Correct 6 ms 14420 KB Output is correct
7 Correct 7 ms 14420 KB Output is correct
8 Correct 7 ms 14420 KB Output is correct
9 Correct 7 ms 14400 KB Output is correct
10 Correct 8 ms 14420 KB Output is correct
11 Correct 8 ms 14548 KB Output is correct
12 Incorrect 7 ms 14420 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 14420 KB Output is correct
2 Correct 6 ms 14420 KB Output is correct
3 Correct 6 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 7 ms 14332 KB Output is correct
8 Correct 7 ms 14420 KB Output is correct
9 Correct 7 ms 14420 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 7 ms 14548 KB Output is correct
12 Incorrect 7 ms 14420 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14308 KB Output is correct
2 Correct 8 ms 14388 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 7 ms 14420 KB Output is correct
6 Correct 6 ms 14420 KB Output is correct
7 Correct 6 ms 14420 KB Output is correct
8 Correct 7 ms 14420 KB Output is correct
9 Correct 7 ms 14420 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 7 ms 14548 KB Output is correct
12 Incorrect 7 ms 14420 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 14420 KB Output is correct
2 Correct 7 ms 14328 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 6 ms 14420 KB Output is correct
5 Correct 7 ms 14420 KB Output is correct
6 Correct 8 ms 14420 KB Output is correct
7 Correct 7 ms 14420 KB Output is correct
8 Correct 8 ms 14420 KB Output is correct
9 Correct 7 ms 14420 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 9 ms 14548 KB Output is correct
12 Incorrect 8 ms 14420 KB Output isn't correct
13 Halted 0 ms 0 KB -