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Submission #1114108

# Submission time Handle Problem Language Result Execution time Memory
1114108 2024-11-18T07:59:39 Z raspy Jakarta Skyscrapers (APIO15_skyscraper) C++17
22 / 100
 34 ms 50932 KB 
#include <bits/stdc++.h>
 
#define int long long
#define vi vector<int>
#define ii pair<int, int>
#define f first
#define s second
#define all(x) (x).begin(), (x).end()
#define P 31
#define mod 1'000'000'007
#define inf 1'000'000'000'000
#define pb push_back
#define str string
#define sz(x) (x).size()
#define vvi vector<vi>
#define fun function
#define oopt cin.tie(0);cout.tie(0);ios_base::sync_with_stdio(false);
#define file freopen("problemname.in", "r", stdin); freopen("pr.out", "w", stdout);
#define dbg(v) cout << "Line(" << __LINE__ << ") -> " << #v << " = " << (v) << endl;
 
using namespace std;
template <class T, int SZ> using arr = array<T, SZ>;
 
int b[30001];
int power[30001];
set<int> pravi[30001];
set<ii> graf[30001];
int ob[30001];
int obp[201][30001];

void solve()
{
	int n, m;
	cin >> n >> m;
	for (int i = 0; i < 30001; i++)
	{
		ob[i] = inf;
		for (int j = 0; j < 201; j++)
			obp[j][i] = inf;
	}
	for (int i = 0; i < m; i++)
	{
		cin >> b[i] >> power[i];
		if (power[i] > 200)
		{
			for (int j = 1; j*j <= n; j++)
			{
				if (b[i]+power[i]*j < n)
					graf[b[i]].insert({b[i]+power[i]*j, j});
				if (b[i]-power[i]*j >= 0)
					graf[b[i]].insert({b[i]-power[i]*j, j});
			}
		}
		else
		{
			pravi[b[i]].insert(power[i]);
		}
	}
	priority_queue<tuple<int, int, int>, vector<tuple<int, int, int>>, greater<tuple<int, int, int>>> pq;
	if (power[0] > 200)
	{
		pq.push({0, b[0], -1});
		ob[b[0]] = 0;
	}
	else
	{
		pq.push({0, b[0], power[0]});
		obp[power[0]][b[0]] = 0;
	}
	while (pq.size())
	{
		auto [d, pos, pow] = pq.top();
		pq.pop();
		if (pos == b[1])
		{
			cout << d << "\n";
			return;
		}
		if (pow > 200 || pow == -1)
		{
			if (ob[pos] < d) continue;
			for (auto [p, w] : graf[pos])
			{
				if (ob[p] > d+w)
				{
					ob[p] = d+w;
					pq.push({d+w, p, -1});
				}
			}
			for (int p : pravi[pos])
			{
				if (obp[p][pos] > d)
				{
					obp[p][pos] = d;
					pq.push({d, pos, p});
				}
			}
		}
		else
		{
			if (obp[pow][pos] < d) continue;
			if (pos-pow >= 0 && obp[pow][pos-pow] > d+1)
			{
				obp[pow][pos-pow] = d+1;
				pq.push({d+1, pos-pow, pow});
			}
			if (pos+pow < n && obp[pow][pos+pow] > d+1)
			{
				obp[pow][pos+pow] = d+1;
				pq.push({d+1, pos+pow, pow});
			}
			if (ob[pos] == 0)
			{
				ob[pos] = d;
				pq.push({d, pos, -1});
			}
			for (int p : pravi[pos])
			{
				if (obp[p][pos] > d)
				{
					obp[p][pos] = d;
					pq.push({d, pos, p});
				}
			}
		}
	}
	cout << -1 << "\n";
}

signed main()
{
	oopt;
	int t = 1;
	// cin >> t;
	while (t--)
		solve();
	return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 50512 KB Output is correct
2 Correct 15 ms 50524 KB Output is correct
3 Correct 21 ms 50512 KB Output is correct
4 Correct 24 ms 50504 KB Output is correct
5 Correct 24 ms 50512 KB Output is correct
6 Correct 22 ms 50636 KB Output is correct
7 Correct 19 ms 50512 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 50512 KB Output is correct
2 Correct 18 ms 50512 KB Output is correct
3 Correct 20 ms 50512 KB Output is correct
4 Correct 19 ms 50512 KB Output is correct
5 Correct 19 ms 50512 KB Output is correct
6 Correct 16 ms 50524 KB Output is correct
7 Correct 16 ms 50512 KB Output is correct
8 Correct 24 ms 50512 KB Output is correct
9 Correct 24 ms 50684 KB Output is correct
10 Correct 24 ms 50512 KB Output is correct
11 Correct 23 ms 50736 KB Output is correct
12 Correct 24 ms 50512 KB Output is correct
13 Correct 21 ms 50512 KB Output is correct
14 Correct 24 ms 50768 KB Output is correct
15 Correct 18 ms 50932 KB Output is correct

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 50512 KB Output is correct
2 Correct 17 ms 50564 KB Output is correct
3 Correct 18 ms 50504 KB Output is correct
4 Correct 20 ms 50512 KB Output is correct
5 Correct 22 ms 50512 KB Output is correct
6 Correct 26 ms 50512 KB Output is correct
7 Correct 24 ms 50504 KB Output is correct
8 Correct 31 ms 50512 KB Output is correct
9 Correct 28 ms 50512 KB Output is correct
10 Correct 23 ms 50528 KB Output is correct
11 Correct 22 ms 50768 KB Output is correct
12 Correct 11 ms 50512 KB Output is correct
13 Correct 15 ms 50512 KB Output is correct
14 Correct 21 ms 50740 KB Output is correct
15 Correct 24 ms 50780 KB Output is correct
16 Correct 24 ms 50764 KB Output is correct
17 Incorrect 25 ms 50768 KB Output isn't correct
18 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 50540 KB Output is correct
2 Correct 22 ms 50512 KB Output is correct
3 Correct 23 ms 50504 KB Output is correct
4 Correct 21 ms 50512 KB Output is correct
5 Correct 26 ms 50544 KB Output is correct
6 Correct 23 ms 50512 KB Output is correct
7 Correct 23 ms 50668 KB Output is correct
8 Correct 30 ms 50524 KB Output is correct
9 Correct 29 ms 50576 KB Output is correct
10 Correct 34 ms 50560 KB Output is correct
11 Correct 27 ms 50768 KB Output is correct
12 Correct 28 ms 50504 KB Output is correct
13 Correct 26 ms 50652 KB Output is correct
14 Correct 30 ms 50780 KB Output is correct
15 Correct 28 ms 50912 KB Output is correct
16 Correct 24 ms 50768 KB Output is correct
17 Incorrect 26 ms 50832 KB Output isn't correct
18 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 50508 KB Output is correct
2 Correct 28 ms 50512 KB Output is correct
3 Correct 26 ms 50496 KB Output is correct
4 Correct 23 ms 50512 KB Output is correct
5 Correct 23 ms 50512 KB Output is correct
6 Correct 28 ms 50504 KB Output is correct
7 Correct 22 ms 50512 KB Output is correct
8 Correct 22 ms 50512 KB Output is correct
9 Correct 23 ms 50512 KB Output is correct
10 Correct 24 ms 50512 KB Output is correct
11 Correct 31 ms 50608 KB Output is correct
12 Correct 29 ms 50512 KB Output is correct
13 Correct 20 ms 50504 KB Output is correct
14 Correct 27 ms 50760 KB Output is correct
15 Correct 20 ms 50804 KB Output is correct
16 Correct 27 ms 50768 KB Output is correct
17 Incorrect 25 ms 50760 KB Output isn't correct
18 Halted 0 ms 0 KB -