oj.uz

Submission #752217

# Submission time Handle Problem Language Result Execution time Memory
752217 2023-06-02T13:55:12 Z penguin133 Nautilus (BOI19_nautilus) C++17
66 / 100
 1000 ms 73112 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

int r, c, m;
bool ok[501][501][501];
char G[501][501];
string s;
int dx[] = {-1, 0, 1, 0}, dy[] = {0, 1, 0, -1};

void solve(){
	cin >> r >> c >> m;
	for(int i=1;i<=r;i++)for(int j=1;j<=c;j++)cin >> G[i][j];
	queue <pii> q;
	for(int i=1;i<=r;i++)for(int j=1;j<=c;j++){
		if(G[i][j] == '.'){
			q.push({0, {i, j}});
		}
	}
	cin >> s;
	while(!q.empty()){
		int a = q.front().fi, x = q.front().se.fi, y = q.front().se.se;
		q.pop();
		if(a == m)continue;
		if(s[a] != '?'){
			if(s[a] == 'W'){
				if(y > 1 && G[x][y-1] != '#' && !ok[a+1][x][y-1])ok[a + 1][x][y - 1] = 1, q.push({a + 1, {x, y - 1}});
			}
			if(s[a] == 'E'){
				if(y < c && G[x][y+1] != '#' && !ok[a+1][x][y+1])ok[a + 1][x][y + 1] = 1, q.push({a + 1, {x, y + 1}});
			}
			if(s[a] == 'S'){
				if(x < r && G[x+1][y] != '#' && !ok[a+1][x+1][y])ok[a + 1][x + 1][y] = 1, q.push({a + 1, {x + 1, y}});
			}
			if(s[a] == 'N'){
				if(x > 1 && G[x-1][y] != '#' && !ok[a+1][x-1][y])ok[a + 1][x-1][y] = 1, q.push({a + 1, {x-1, y}});
			}
			continue;
		}
		for(int i = 0; i < 4; i++){
			int x1 = x + dx[i], y1 = y + dy[i];
			if(x1 < 1 || x1 > r || y1 < 1 || y1 > c || G[x1][y1] == '#' || ok[a+1][x1][y1])continue;
			ok[a+1][x1][y1] = 1; q.push({a+1, {x1, y1}});
		}
	}
	int ans = 0;
	for(int i=1;i<=r;i++)for(int j=1;j<=c;j++)ans += ok[m][i][j];
	cout << ans;
}

main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int tc = 1;
	//cin >> tc;
	for(int tc1=1;tc1<=tc;tc1++){
		// cout << "Case #" << tc1 << ": ";
		solve();
	}
}

Compilation message

nautilus.cpp:60:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   60 | main(){
      | ^~~~

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 5460 KB Output is correct
2 Correct 4 ms 4948 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 1376 KB Output is correct
5 Correct 1 ms 1108 KB Output is correct
6 Correct 1 ms 852 KB Output is correct

Subtask #2
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 5460 KB Output is correct
2 Correct 4 ms 4948 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 1376 KB Output is correct
5 Correct 1 ms 1108 KB Output is correct
6 Correct 1 ms 852 KB Output is correct
7 Correct 20 ms 5844 KB Output is correct
8 Correct 8 ms 5728 KB Output is correct
9 Correct 4 ms 4436 KB Output is correct
10 Correct 2 ms 2132 KB Output is correct
11 Correct 2 ms 1008 KB Output is correct
12 Correct 25 ms 5808 KB Output is correct
13 Correct 29 ms 5768 KB Output is correct
14 Correct 22 ms 5716 KB Output is correct
15 Correct 5 ms 4820 KB Output is correct
16 Correct 1 ms 1108 KB Output is correct
17 Correct 29 ms 5912 KB Output is correct
18 Correct 32 ms 5872 KB Output is correct
19 Correct 19 ms 5760 KB Output is correct
20 Correct 8 ms 5716 KB Output is correct
21 Correct 1 ms 1108 KB Output is correct

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 5460 KB Output is correct
2 Correct 4 ms 4948 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 1376 KB Output is correct
5 Correct 1 ms 1108 KB Output is correct
6 Correct 1 ms 852 KB Output is correct
7 Correct 20 ms 5844 KB Output is correct
8 Correct 8 ms 5728 KB Output is correct
9 Correct 4 ms 4436 KB Output is correct
10 Correct 2 ms 2132 KB Output is correct
11 Correct 2 ms 1008 KB Output is correct
12 Correct 25 ms 5808 KB Output is correct
13 Correct 29 ms 5768 KB Output is correct
14 Correct 22 ms 5716 KB Output is correct
15 Correct 5 ms 4820 KB Output is correct
16 Correct 1 ms 1108 KB Output is correct
17 Correct 29 ms 5912 KB Output is correct
18 Correct 32 ms 5872 KB Output is correct
19 Correct 19 ms 5760 KB Output is correct
20 Correct 8 ms 5716 KB Output is correct
21 Correct 1 ms 1108 KB Output is correct
22 Execution timed out 1072 ms 73112 KB Time limit exceeded
23 Halted 0 ms 0 KB -