Submission #288085

#	Time	Username	Problem	Language	Result	Execution time	Memory
288085		MKutayBozkurt	Awesome Arrowland Adventure (eJOI19_adventure)	C++17	100 / 100	236 ms	27596 KiB

adventure

#include <bits/stdc++.h>
using namespace std;

template<typename T>
istream &operator>>(istream &is, vector<T> &v) {
  for (auto &x : v) is >> x;
  return is;
}

#define int long long

const int inf = 1e18;
int n, m;
vector<vector<char>> a;
int sp() {
	priority_queue<pair<int, pair<int, int>>, vector<pair<int, pair<int, int>>>, greater<pair<int, pair<int, int>>>> pq;
	vector<vector<int>> ans(n, vector<int>(m, -1));
	pq.push({0, {0, 0}});
	while (pq.size()) {
		int z = pq.top().first;
		int x = pq.top().second.first;
		int y = pq.top().second.second;
		pq.pop();
		if (x < 0 || y < 0 || x >= n || y >= m || ans[x][y] != -1) continue;
		ans[x][y] = z;
		if (a[x][y] == 'E') {
			pq.push({z, {x, y + 1}});
			pq.push({z + 1, {x + 1, y}});
			pq.push({z + 2, {x, y - 1}});
			pq.push({z + 3, {x - 1, y}});
		} else if (a[x][y] == 'S') {
			pq.push({z, {x + 1, y}});
			pq.push({z + 1, {x, y - 1}});
			pq.push({z + 2, {x - 1, y}});
			pq.push({z + 3, {x, y + 1}});
		} else if (a[x][y] == 'W') {
			pq.push({z, {x, y - 1}});
			pq.push({z + 1, {x - 1, y}});
			pq.push({z + 2, {x, y + 1}});
			pq.push({z + 3, {x + 1, y}});
		} else if (a[x][y] == 'N') {
			pq.push({z, {x - 1, y}});
			pq.push({z + 1, {x, y + 1}});
			pq.push({z + 2, {x + 1, y}});
			pq.push({z + 3, {x, y - 1}});
		}
	}
	return ans[n - 1][m - 1];
}

int32_t main() {
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	/*
	her 4 yere bir cost ile gidiyon
	*/
	cin >> n >> m;
	a = vector<vector<char>>(n, vector<char>(m)); cin >> a;
	cout << sp() << '\n';
}

• Subtask 1: 10 / 10
• Subtask 2: 12 / 12
• Subtask 3: 12 / 12
• Subtask 4: 16 / 16
• Subtask 5: 50 / 50