oj.uz

Submission #1087846

# Submission time Handle Problem Language Result Execution time Memory
1087846 2024-09-13T10:09:49 Z mychecksedad Toy (CEOI24_toy) C++17
0 / 100
 14 ms 12800 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define pb push_back
#define en cout << '\n'
#define vi vector<int>
#define pii pair<int, int>
#define ff first
#define ss second
#define all(x) x.begin(),x.end()
const int N = 1500+100;


int n, m, k, l, xh, yh, xv, yv, pref[N][N], H[N][N], V[N][N], vis[N][N], L[N][N], R[N][N], U[N][N], D[N][N];
string s[N];
int arr[4][2]={
	{0, 1},
	{1, 0},
	{-1, 0},
	{0, -1}
};
int get(int r1, int r2, int c1, int c2){
	return pref[r2][c2] - pref[r1 - 1][c2] - pref[r2][c1 - 1] + pref[r1 - 1][c1 - 1];
}
void solve(){
	cin >> m >> n >> k >> l;	
	cin >> yh >> xh >> yv >> xv;
	++xh, ++yh, ++xv, ++yv;
	for(int i = 1; i <= n; ++i){
		cin >> s[i];
		s[i] = " " + s[i];
	}
	for(int i = 0; i <= n; ++i) for(int j = 0; j <= m; ++j) pref[i][j] = 0;
	for(int i = 0; i <= n; ++i) for(int j = 0; j <= m; ++j) H[i][j] = V[i][j] = vis[i][j] = L[i][j] = R[i][j] = D[i][j] = U[i][j] = 0;
	for(int i = 1; i <= n; ++i){
		for(int j = 1; j <= m; ++j){
			pref[i][j] = pref[i - 1][j] + pref[i][j - 1] - pref[i - 1][j - 1];
			if(s[i][j] == 'X') ++pref[i][j];
		}
	}
	H[xh][yh] = 1;
	queue<pii> q;
	q.push({xh, yh});
	while(!q.empty()){
		int x = q.front().ff;
		int y = q.front().ss;
		q.pop();
		for(int i = 0; i < 4; ++i){
			int nx = x + arr[i][0];
			int ny = y + arr[i][1];
			if(nx > 0 && ny > 0 && nx <= n && ny + k - 1 <= m && H[nx][ny] == 0){
				if(get(nx, nx, ny, ny + k - 1) == 0){
					H[nx][ny] = 1;
					q.push({nx, ny});
				}
			}
		}
	}
	V[xv][yv] = 1;
	q.push({xv, yv});
	while(!q.empty()){
		int x = q.front().ff;
		int y = q.front().ss;
		q.pop();
		for(int i = 0; i < 4; ++i){
			int nx = x + arr[i][0];
			int ny = y + arr[i][1];
			if(nx > 0 && ny > 0 && nx + l - 1 <= n && ny <= m && V[nx][ny] == 0){
				if(get(nx, nx+l-1, ny, ny) == 0){
					V[nx][ny] = 1;
					q.push({nx, ny});
				}
			}
		}
	}

	for(int i = n; i >= 1; --i){
		for(int j = m; j >= 1; --j){
			for(int i1 = i; i1 >= max(1, i - l + 1); --i1)
					if(get(i1, i, j, j) == 0 && V[i1][j]){
						if(V[i1][j + 1]) R[i][j] = 1;
						if(V[i1][j - 1]) L[i][j] = 1;
					}
			for(int i1 = j; i1 >= max(1, j - k + 1); --i1)
					if(get(i, i, i1, j) == 0 && H[i][i1]){
						if(H[i - 1][i1]) U[i][j] = 1;
						if(H[i + 1][i1]) D[i][j] = 1;
					}
		}
	}
	// for(int i = 1; i <= n; ++i){
	// 	for(int j = 1; j <= m; ++j){
	// 		cout << L[i][j];
	// 	}
	// 	en;
	// }
	// assert(H[xh][yv] && V[xh][yv]);
	vis[xh][yv] = 1;
	q.push({xh, yv});
	while(!q.empty()){
		int x = q.front().ff;
		int y = q.front().ss;
		q.pop();
		for(int i = 0; i < 4; ++i){
			int nx = x + arr[i][0];
			int ny = y + arr[i][1];
			if(nx > 0 && ny > 0 && nx <= n && ny <= m && !vis[nx][ny]){
				if((nx == x - 1 && R[x][y]) || (nx == x + 1 && L[x][y]) || (ny == y + 1 && D[x][y]) || (ny == y - 1 && U[x][y])){
					vis[nx][ny] = 1;
					q.push({nx, ny});
				}
			}
		}
	}
	for(int i = 1; i <= n; ++i){
		for(int j = 1; j <= m; ++j){
			if(s[i][j] == '*' && vis[i][j]){
				cout << "YES";
				return;
			}
		}
	}
	cout << "NO";
}

int main(){
	cin.tie(0); ios::sync_with_stdio(0);
	solve();
	return 0;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct

Subtask #1
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 1 ms 856 KB Output is correct
4 Correct 1 ms 2140 KB Output is correct
5 Correct 1 ms 2140 KB Output is correct
6 Correct 1 ms 1884 KB Output is correct
7 Correct 1 ms 2140 KB Output is correct
8 Correct 1 ms 2140 KB Output is correct
9 Correct 1 ms 1628 KB Output is correct
10 Correct 2 ms 1984 KB Output is correct
11 Correct 1 ms 2136 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 1 ms 2140 KB Output is correct
14 Correct 1 ms 2140 KB Output is correct
15 Correct 1 ms 2140 KB Output is correct
16 Correct 1 ms 1884 KB Output is correct
17 Correct 1 ms 1884 KB Output is correct
18 Correct 1 ms 2176 KB Output is correct
19 Correct 1 ms 2140 KB Output is correct
20 Correct 1 ms 2140 KB Output is correct
21 Correct 1 ms 2140 KB Output is correct
22 Correct 1 ms 2140 KB Output is correct
23 Correct 1 ms 2140 KB Output is correct
24 Correct 1 ms 2140 KB Output is correct
25 Correct 1 ms 2140 KB Output is correct
26 Correct 1 ms 2140 KB Output is correct
27 Correct 1 ms 2140 KB Output is correct
28 Correct 1 ms 2140 KB Output is correct
29 Correct 1 ms 2140 KB Output is correct
30 Correct 1 ms 1884 KB Output is correct
31 Incorrect 1 ms 1884 KB Output isn't correct
32 Halted 0 ms 0 KB -

Subtask #2
0.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 1 ms 856 KB Output is correct
4 Correct 1 ms 2140 KB Output is correct
5 Correct 1 ms 2140 KB Output is correct
6 Correct 1 ms 1884 KB Output is correct
7 Correct 1 ms 2140 KB Output is correct
8 Correct 1 ms 2140 KB Output is correct
9 Correct 1 ms 1628 KB Output is correct
10 Correct 2 ms 1984 KB Output is correct
11 Correct 1 ms 2136 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 1 ms 2140 KB Output is correct
14 Correct 1 ms 2140 KB Output is correct
15 Correct 1 ms 2140 KB Output is correct
16 Correct 1 ms 1884 KB Output is correct
17 Correct 1 ms 1884 KB Output is correct
18 Correct 1 ms 2176 KB Output is correct
19 Correct 1 ms 2140 KB Output is correct
20 Correct 1 ms 2140 KB Output is correct
21 Correct 1 ms 2140 KB Output is correct
22 Correct 1 ms 2140 KB Output is correct
23 Correct 1 ms 2140 KB Output is correct
24 Correct 1 ms 2140 KB Output is correct
25 Correct 1 ms 2140 KB Output is correct
26 Correct 1 ms 2140 KB Output is correct
27 Correct 1 ms 2140 KB Output is correct
28 Correct 1 ms 2140 KB Output is correct
29 Correct 1 ms 2140 KB Output is correct
30 Correct 1 ms 1884 KB Output is correct
31 Incorrect 1 ms 1884 KB Output isn't correct
32 Halted 0 ms 0 KB -

Subtask #3
0.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 1 ms 1628 KB Output is correct
4 Correct 10 ms 12800 KB Output is correct
5 Correct 12 ms 12632 KB Output is correct
6 Correct 2 ms 2908 KB Output is correct
7 Correct 13 ms 12632 KB Output is correct
8 Correct 12 ms 12792 KB Output is correct
9 Correct 3 ms 4952 KB Output is correct
10 Correct 9 ms 12636 KB Output is correct
11 Correct 10 ms 12636 KB Output is correct
12 Correct 4 ms 9080 KB Output is correct
13 Correct 7 ms 12636 KB Output is correct
14 Correct 8 ms 12636 KB Output is correct
15 Correct 12 ms 12628 KB Output is correct
16 Correct 11 ms 12120 KB Output is correct
17 Correct 11 ms 12636 KB Output is correct
18 Correct 11 ms 12792 KB Output is correct
19 Correct 11 ms 12736 KB Output is correct
20 Correct 11 ms 12632 KB Output is correct
21 Correct 12 ms 12656 KB Output is correct
22 Correct 11 ms 12796 KB Output is correct
23 Correct 11 ms 12796 KB Output is correct
24 Correct 12 ms 12560 KB Output is correct
25 Correct 14 ms 12636 KB Output is correct
26 Correct 11 ms 12636 KB Output is correct
27 Correct 11 ms 12796 KB Output is correct
28 Correct 11 ms 12636 KB Output is correct
29 Correct 10 ms 12636 KB Output is correct
30 Correct 11 ms 12364 KB Output is correct
31 Incorrect 11 ms 12376 KB Output isn't correct
32 Halted 0 ms 0 KB -

Subtask #4
0.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 1 ms 856 KB Output is correct
4 Correct 1 ms 2140 KB Output is correct
5 Correct 1 ms 2140 KB Output is correct
6 Correct 1 ms 1884 KB Output is correct
7 Correct 1 ms 2140 KB Output is correct
8 Correct 1 ms 2140 KB Output is correct
9 Correct 1 ms 1628 KB Output is correct
10 Correct 2 ms 1984 KB Output is correct
11 Correct 1 ms 2136 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 1 ms 2140 KB Output is correct
14 Correct 1 ms 2140 KB Output is correct
15 Correct 1 ms 2140 KB Output is correct
16 Correct 1 ms 1884 KB Output is correct
17 Correct 1 ms 1884 KB Output is correct
18 Correct 1 ms 2176 KB Output is correct
19 Correct 1 ms 2140 KB Output is correct
20 Correct 1 ms 2140 KB Output is correct
21 Correct 1 ms 2140 KB Output is correct
22 Correct 1 ms 2140 KB Output is correct
23 Correct 1 ms 2140 KB Output is correct
24 Correct 1 ms 2140 KB Output is correct
25 Correct 1 ms 2140 KB Output is correct
26 Correct 1 ms 2140 KB Output is correct
27 Correct 1 ms 2140 KB Output is correct
28 Correct 1 ms 2140 KB Output is correct
29 Correct 1 ms 2140 KB Output is correct
30 Correct 1 ms 1884 KB Output is correct
31 Incorrect 1 ms 1884 KB Output isn't correct
32 Halted 0 ms 0 KB -

Subtask #5
0.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 1 ms 856 KB Output is correct
4 Correct 1 ms 2140 KB Output is correct
5 Correct 1 ms 2140 KB Output is correct
6 Correct 1 ms 1884 KB Output is correct
7 Correct 1 ms 2140 KB Output is correct
8 Correct 1 ms 2140 KB Output is correct
9 Correct 1 ms 1628 KB Output is correct
10 Correct 2 ms 1984 KB Output is correct
11 Correct 1 ms 2136 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 1 ms 2140 KB Output is correct
14 Correct 1 ms 2140 KB Output is correct
15 Correct 1 ms 2140 KB Output is correct
16 Correct 1 ms 1884 KB Output is correct
17 Correct 1 ms 1884 KB Output is correct
18 Correct 1 ms 2176 KB Output is correct
19 Correct 1 ms 2140 KB Output is correct
20 Correct 1 ms 2140 KB Output is correct
21 Correct 1 ms 2140 KB Output is correct
22 Correct 1 ms 2140 KB Output is correct
23 Correct 1 ms 2140 KB Output is correct
24 Correct 1 ms 2140 KB Output is correct
25 Correct 1 ms 2140 KB Output is correct
26 Correct 1 ms 2140 KB Output is correct
27 Correct 1 ms 2140 KB Output is correct
28 Correct 1 ms 2140 KB Output is correct
29 Correct 1 ms 2140 KB Output is correct
30 Correct 1 ms 1884 KB Output is correct
31 Incorrect 1 ms 1884 KB Output isn't correct
32 Halted 0 ms 0 KB -