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Submission #496458

# Submission time Handle Problem Language Result Execution time Memory
496458 2021-12-21T08:34:02 Z Ierus Nautilus (BOI19_nautilus) C++17
66 / 100
 1000 ms 18892 KB 
#include<bits/stdc++.h>
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
*/
using namespace std;
#pragma GCC optimize ("unroll-loops,Ofast,O3")
#pragma GCC target("avx,avx2,fma")
#define F first
#define int short
#define S second
#define sz(x) (int)x.size()
#define pb push_back
#define eb emplace_back
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
#define NFS ios_base::sync_with_stdio(0) , cin.tie(0) , cout.tie(0) ;
#define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
//#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
typedef long long ll;
const long long inf = 1e18+777;
const int N = 555;
const bool I = 1;
const vector<pair<int,int>> dxy = {{1,0},{-1,0},{0,1},{0,-1}};
int n, m, k, q[5555];
char a[555][555];
bitset<N> vis[555];
int32_t res = 0;
bitset<N> used[555][5555];
bool In(int x, int y){
	return (x <= n && x >= 1 && y <= m && y >= 1);
}
void bfs(int x, int y, int d = 1){
	deque<tuple<int,int,int>> dq;
	dq.pb({x, y, d});
	while(!dq.empty()){
		tie(x, y, d) = dq.front();
		dq.pop_front();
		if(d == k + 1){
			if(!vis[x][y]){
				vis[x][y] = true;
				++res;
			}
			continue;	
		}
		if(q[d] == -1){
			for(auto [f, s] : dxy){
				int x1 = x + f, y1 = y + s;
				if(In(x1, y1) && a[x1][y1] != '#' && !used[x1][y1][d+1]){
					dq.pb({x1, y1, d+1});
					used[x1][y1][d+1] = true;
				}
			}
		}else{
			int x1 = x + dxy[q[d]].F, y1 = y + dxy[q[d]].S;
			if(In(x1, y1) && a[x1][y1] != '#' && !used[x1][y1][d+1]){
				dq.pb({x1, y1, d+1});
				used[x1][y1][d+1] = true;
			}
		}
	}
}
void dfs(int x, int y, int d){
	if(d == k + 1){
		if(!vis[x][y]){
			vis[x][y] = true;
			++res;
		}
		return;
	}
	if(q[d] == -1){
		for(auto [f, s] : dxy){
			int x1 = x + f, y1 = y + s;
			if(In(x1, y1) && a[x1][y1] != '#' && !used[x1][y1][d+1]){
				used[x1][y1][d+1] = true;
				dfs(x1, y1, d+1);
			}
		}
	}else{
		int x1 = x + dxy[q[d]].F, y1 = y + dxy[q[d]].S;
		if(In(x1, y1) && a[x1][y1] != '#' && !used[x1][y1][d+1]){
			used[x1][y1][d+1] = true;
			dfs(x1, y1, d+1);
		}
	}
}
signed main(){NFS;
	cin >> n >> m >> k;
	for(int i = 1; i <= n; ++i){
		for(int j = 1; j <= m; ++j){
			cin >> a[i][j];
		}
	}
	for(int i = 1; i <= k; ++i){
		char r; cin >> r;
		if(r == '?') q[i] = -1;
		if(r == 'N') q[i] = 1;
		if(r == 'S') q[i] = 0;
		if(r == 'E') q[i] = 2;
		if(r == 'W') q[i] = 3;
	}

	for(int i = 1; i <= n; ++i)
		for(int j = 1; j <= m; ++j){
			if(a[i][j] == '.'){
				dfs(i, j, 1);
			}
		}
	cout << res;
};

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 1520 KB Output is correct
2 Correct 2 ms 1484 KB Output is correct
3 Correct 1 ms 1484 KB Output is correct
4 Correct 1 ms 1484 KB Output is correct
5 Correct 1 ms 1100 KB Output is correct
6 Correct 1 ms 332 KB Output is correct

Subtask #2
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 1520 KB Output is correct
2 Correct 2 ms 1484 KB Output is correct
3 Correct 1 ms 1484 KB Output is correct
4 Correct 1 ms 1484 KB Output is correct
5 Correct 1 ms 1100 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 14 ms 1560 KB Output is correct
8 Correct 7 ms 1484 KB Output is correct
9 Correct 2 ms 1484 KB Output is correct
10 Correct 1 ms 1356 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 19 ms 1556 KB Output is correct
13 Correct 25 ms 1556 KB Output is correct
14 Correct 17 ms 1516 KB Output is correct
15 Correct 2 ms 1356 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 20 ms 1552 KB Output is correct
18 Correct 23 ms 1540 KB Output is correct
19 Correct 8 ms 1484 KB Output is correct
20 Correct 3 ms 1356 KB Output is correct
21 Correct 1 ms 332 KB Output is correct

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 1520 KB Output is correct
2 Correct 2 ms 1484 KB Output is correct
3 Correct 1 ms 1484 KB Output is correct
4 Correct 1 ms 1484 KB Output is correct
5 Correct 1 ms 1100 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 14 ms 1560 KB Output is correct
8 Correct 7 ms 1484 KB Output is correct
9 Correct 2 ms 1484 KB Output is correct
10 Correct 1 ms 1356 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 19 ms 1556 KB Output is correct
13 Correct 25 ms 1556 KB Output is correct
14 Correct 17 ms 1516 KB Output is correct
15 Correct 2 ms 1356 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 20 ms 1552 KB Output is correct
18 Correct 23 ms 1540 KB Output is correct
19 Correct 8 ms 1484 KB Output is correct
20 Correct 3 ms 1356 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Execution timed out 1087 ms 18892 KB Time limit exceeded
23 Halted 0 ms 0 KB -