oj.uz

답안 #448356

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
448356 2021-07-29T19:32:14 Z bigo Awesome Arrowland Adventure (eJOI19_adventure) C++14
0 / 100
 1 ms 332 KB 
#include <bits/stdc++.h>
using namespace std;
typedef unsigned long long ll;
const ll sz = 1e6;
const ll INF = 1e18;
ll n, m;
#define pii pair<ll,ll>
vector<vector<pii>>gra;
vector<ll> dist;
bitset<sz>done;
void solve(ll su) {
	for (ll i = 0; i < n * m; i++) {
		dist[i] = INF;
	}
	dist[su] = 0;
	priority_queue<pii, vector<pii>, greater<pii>>pq;
	pq.push({ 0,su });
	while (!pq.empty()) {
		pii tmp = pq.top();
		pq.pop();
		ll u = tmp.second, d = tmp.first;
		if (done[u])
			continue;
		done[u] = true;
		for (auto ii : gra[tmp.second]) {
			ll v = ii.first, w = ii.second;
			if (dist[v] > dist[u] + w) {
				dist[v] = dist[u] + w;
				pq.push({ dist[v],v });
			}
		}
	}
}
int main() {
	cin >> n >> m;
	if (n == 0 or m == 0)
		cout << -1;
	else {
		vector<vector<char>>vec1(n, vector<char>(m));
		for (ll i = 0; i < n; i++) {
			for (ll j = 0; j < m; j++) {
				cin >> vec1[i][j];
			}
		}
		vector<vector<ll>>vec(n, vector<ll>(m));
		for (ll i = 0; i < n; i++) {
			for (ll j = 0; j < m; j++) {
				if (vec1[i][j] == 'N')
					vec[i][j] = 1;
				if (vec1[i][j] == 'E')
					vec[i][j] = 2;
				if (vec1[i][j] == 'S')
					vec[i][j] = 3;
				if (vec1[i][j] == 'W')
					vec[i][j] = 4;
			}
		}
		ll tmp = 0;
		dist.resize(n * m);
		gra.resize(n * m);
		for (ll i = 0; i < n; i++) {
			for (ll j = 0; j < m; j++) {
				if (vec1[i][j] != 'X') {
					if (i != 0) {
						gra[tmp].push_back({ tmp - m,vec[i][j] - 1 });
					}
					if (i != n - 1) {
						if (vec[i][j] > 3)
							gra[tmp].push_back({ tmp + m,4 - (vec[i][j] - 3) });
						else
							gra[tmp].push_back({ tmp + m,3 - vec[i][j] });
					}
					if (j != m - 1) {
						if (vec[i][j] > 2)
							gra[tmp].push_back({ tmp + 1,4 - (vec[i][j] - 2) });
						else
							gra[tmp].push_back({ tmp + 1,2 - vec[i][j] });
					}
					if (j != 0) {
						gra[tmp].push_back({ tmp - 1 ,4 - vec[i][j] });
					}
				}
				tmp++;
			}
		}
		solve(0);
		if (dist[tmp - 1] == INF)
			cout << 0;
		else
			cout << dist[tmp - 1];
	}
}

Compilation message

adventure.cpp: In function 'void solve(ll)':
adventure.cpp:21:22: warning: unused variable 'd' [-Wunused-variable]
   21 |   ll u = tmp.second, d = tmp.first;
      |                      ^

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Incorrect 0 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 332 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -