oj.uz

Submission #1077115

# Submission time Handle Problem Language Result Execution time Memory
1077115 2024-08-27T00:57:01 Z pawned Toy (CEOI24_toy) C++17
14 / 100
 1500 ms 132576 KB 
#pragma GCC optimize("O1,O2,O3,Ofast,unroll-loops")

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

#define fi first
#define se second
#define pb push_back
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<int> vi;

const char nl = '\n';

void fastIO() {
	ios::sync_with_stdio(false);
	cin.tie(0);
}


int dir1[8] = {-1, 1, 0, 0, 0, 0, 0, 0};
int dir2[8] = {0, 0, -1, 1, 0, 0, 0, 0};
int dir3[8] = {0, 0, 0, 0, -1, 1, 0, 0};
int dir4[8] = {0, 0, 0, 0, 0, 0, -1, 1};

int main() {
	fastIO();
	int R, C, K, L;
	// K = horizontal width, L = vertical width
	cin>>C>>R>>K>>L;
	pair<ii, ii> start;
	// {horizontal left coords, vertical top coords}
	cin>>start.fi.se>>start.fi.fi>>start.se.se>>start.se.fi;
	ii goal;	// goal cell
	vector<vector<char>> grid(R, vector<char>(C, '.'));
	for (int i = 0; i < R; i++) {
		for (int j = 0; j < C; j++) {
			cin>>grid[i][j];
			if (grid[i][j] == '*')
				goal = {i, j};
		}
	}
	// prefix sums to check for filled
	vector<vi> pfs1(R, vi(C + 1, 0));	// horizontal prefix sums
	vector<vi> pfs2(R + 1, vi(C, 0));	// vertical prefix sums
	for (int i = 0; i < R; i++) {
		for (int j = 1; j <= C; j++) {
			pfs1[i][j] = pfs1[i][j - 1];
			if (grid[i][j - 1] == 'X')
				pfs1[i][j]++;
		}
	}
	for (int i = 0; i < C; i++) {
		for (int j = 1; j <= R; j++) {
			pfs2[j][i] = pfs2[j - 1][i];
			if (grid[j - 1][i] == 'X')
				pfs2[j][i]++;
		}
	}
/*	cout<<"pfs1: "<<endl;
	for (vi v : pfs1) {
		for (int x : v)
			cout<<x<<" ";
		cout<<endl;
	}
	cout<<"pfs2: "<<endl;
	for (vi v : pfs2) {
		for (int x : v)
			cout<<x<<" ";
		cout<<endl;
	}*/
	set<pair<ii, ii>> visited;
	queue<pair<ii, ii>> q;
	visited.insert(start);
	q.push(start);
	while (!q.empty()) {
		pair<ii, ii> x = q.front();
		q.pop();
//		cout<<"at ("<<x.fi.fi<<", "<<x.fi.se<<", "<<x.se.fi<<", "<<x.se.se<<")"<<endl;
		for (int i = 0; i < 8; i++) {
			pair<ii, ii> y = x;	// new state
			y.fi.fi += dir1[i];
			y.fi.se += dir2[i];
			y.se.fi += dir3[i];
			y.se.se += dir4[i];
//			cout<<"going to ("<<y.fi.fi<<", "<<y.fi.se<<", "<<y.se.fi<<", "<<y.se.se<<")"<<endl;
			// check if state is possible
			if (y.fi.fi < 0 || y.fi.fi >= R || y.fi.se < 0 || y.fi.se >= C - K + 1)
				continue;
			if (y.se.se < 0 || y.se.se >= C || y.se.fi < 0 || y.se.fi >= R - L + 1)
				continue;
			// check if they intersect
			if (y.fi.fi < y.se.fi || y.fi.fi >= y.se.fi + L)
				continue;
			if (y.se.se < y.fi.se || y.se.se >= y.fi.se + K)
				continue;
			// state is in grid, check if none on it blocked
			if (pfs1[y.fi.fi][y.fi.se + K] - pfs1[y.fi.fi][y.fi.se] > 0)
				continue;
			if (pfs2[y.se.fi + L][y.se.se] - pfs2[y.se.fi][y.se.se] > 0)
				continue;
			// if state is possible and unvisited, add to queue
			if (visited.find(y) == visited.end()) {
				q.push(y);
				visited.insert(y);
			}
		}
	}
	// check if any of visited intersect at flag
	bool found = false;
	for (pair<ii, ii> p : visited) {
		ii ins = {p.fi.fi, p.se.se};
		if (ins == goal)
			found = true;
	}
	if (found)
		cout<<"YES"<<endl;
	else
		cout<<"NO"<<endl;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 5 ms 796 KB Output is correct
4 Correct 291 ms 20308 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 4 ms 868 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 368 ms 23632 KB Output is correct
16 Correct 301 ms 20216 KB Output is correct
17 Correct 342 ms 21992 KB Output is correct
18 Correct 416 ms 26884 KB Output is correct
19 Correct 415 ms 26588 KB Output is correct
20 Correct 426 ms 26192 KB Output is correct
21 Correct 431 ms 26964 KB Output is correct
22 Correct 399 ms 26704 KB Output is correct
23 Correct 401 ms 26196 KB Output is correct
24 Correct 153 ms 11964 KB Output is correct
25 Correct 128 ms 10720 KB Output is correct
26 Correct 116 ms 9252 KB Output is correct
27 Correct 106 ms 8528 KB Output is correct
28 Correct 90 ms 7764 KB Output is correct
29 Correct 81 ms 6996 KB Output is correct
30 Correct 80 ms 7504 KB Output is correct
31 Correct 98 ms 8784 KB Output is correct
32 Correct 48 ms 4436 KB Output is correct
33 Correct 49 ms 4940 KB Output is correct
34 Correct 121 ms 8020 KB Output is correct
35 Correct 76 ms 6900 KB Output is correct
36 Correct 1 ms 600 KB Output is correct
37 Correct 22 ms 2224 KB Output is correct
38 Correct 24 ms 2312 KB Output is correct
39 Correct 21 ms 2416 KB Output is correct
40 Correct 21 ms 2388 KB Output is correct
41 Correct 24 ms 2648 KB Output is correct
42 Correct 1 ms 600 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 1 ms 604 KB Output is correct
45 Correct 1 ms 604 KB Output is correct
46 Correct 1 ms 348 KB Output is correct

Subtask #2
0.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 5 ms 796 KB Output is correct
4 Correct 291 ms 20308 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 4 ms 868 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 368 ms 23632 KB Output is correct
16 Correct 301 ms 20216 KB Output is correct
17 Correct 342 ms 21992 KB Output is correct
18 Correct 416 ms 26884 KB Output is correct
19 Correct 415 ms 26588 KB Output is correct
20 Correct 426 ms 26192 KB Output is correct
21 Correct 431 ms 26964 KB Output is correct
22 Correct 399 ms 26704 KB Output is correct
23 Correct 401 ms 26196 KB Output is correct
24 Correct 153 ms 11964 KB Output is correct
25 Correct 128 ms 10720 KB Output is correct
26 Correct 116 ms 9252 KB Output is correct
27 Correct 106 ms 8528 KB Output is correct
28 Correct 90 ms 7764 KB Output is correct
29 Correct 81 ms 6996 KB Output is correct
30 Correct 80 ms 7504 KB Output is correct
31 Correct 98 ms 8784 KB Output is correct
32 Correct 48 ms 4436 KB Output is correct
33 Correct 49 ms 4940 KB Output is correct
34 Correct 121 ms 8020 KB Output is correct
35 Correct 76 ms 6900 KB Output is correct
36 Correct 1 ms 600 KB Output is correct
37 Correct 22 ms 2224 KB Output is correct
38 Correct 24 ms 2312 KB Output is correct
39 Correct 21 ms 2416 KB Output is correct
40 Correct 21 ms 2388 KB Output is correct
41 Correct 24 ms 2648 KB Output is correct
42 Correct 1 ms 600 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 1 ms 604 KB Output is correct
45 Correct 1 ms 604 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 46 ms 4292 KB Output is correct
48 Correct 67 ms 4592 KB Output is correct
49 Correct 1 ms 604 KB Output is correct
50 Correct 1 ms 604 KB Output is correct
51 Correct 133 ms 10324 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 1 ms 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Execution timed out 1582 ms 83364 KB Time limit exceeded
60 Halted 0 ms 0 KB -

Subtask #3
0.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 60 ms 5712 KB Output is correct
4 Execution timed out 1580 ms 132576 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
0.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 5 ms 796 KB Output is correct
4 Correct 291 ms 20308 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 4 ms 868 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 368 ms 23632 KB Output is correct
16 Correct 301 ms 20216 KB Output is correct
17 Correct 342 ms 21992 KB Output is correct
18 Correct 416 ms 26884 KB Output is correct
19 Correct 415 ms 26588 KB Output is correct
20 Correct 426 ms 26192 KB Output is correct
21 Correct 431 ms 26964 KB Output is correct
22 Correct 399 ms 26704 KB Output is correct
23 Correct 401 ms 26196 KB Output is correct
24 Correct 153 ms 11964 KB Output is correct
25 Correct 128 ms 10720 KB Output is correct
26 Correct 116 ms 9252 KB Output is correct
27 Correct 106 ms 8528 KB Output is correct
28 Correct 90 ms 7764 KB Output is correct
29 Correct 81 ms 6996 KB Output is correct
30 Correct 80 ms 7504 KB Output is correct
31 Correct 98 ms 8784 KB Output is correct
32 Correct 48 ms 4436 KB Output is correct
33 Correct 49 ms 4940 KB Output is correct
34 Correct 121 ms 8020 KB Output is correct
35 Correct 76 ms 6900 KB Output is correct
36 Correct 1 ms 600 KB Output is correct
37 Correct 22 ms 2224 KB Output is correct
38 Correct 24 ms 2312 KB Output is correct
39 Correct 21 ms 2416 KB Output is correct
40 Correct 21 ms 2388 KB Output is correct
41 Correct 24 ms 2648 KB Output is correct
42 Correct 1 ms 600 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 1 ms 604 KB Output is correct
45 Correct 1 ms 604 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 46 ms 4292 KB Output is correct
48 Correct 67 ms 4592 KB Output is correct
49 Correct 1 ms 604 KB Output is correct
50 Correct 1 ms 604 KB Output is correct
51 Correct 133 ms 10324 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 1 ms 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Execution timed out 1582 ms 83364 KB Time limit exceeded
60 Halted 0 ms 0 KB -

Subtask #5
0.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 5 ms 796 KB Output is correct
4 Correct 291 ms 20308 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 4 ms 868 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 368 ms 23632 KB Output is correct
16 Correct 301 ms 20216 KB Output is correct
17 Correct 342 ms 21992 KB Output is correct
18 Correct 416 ms 26884 KB Output is correct
19 Correct 415 ms 26588 KB Output is correct
20 Correct 426 ms 26192 KB Output is correct
21 Correct 431 ms 26964 KB Output is correct
22 Correct 399 ms 26704 KB Output is correct
23 Correct 401 ms 26196 KB Output is correct
24 Correct 153 ms 11964 KB Output is correct
25 Correct 128 ms 10720 KB Output is correct
26 Correct 116 ms 9252 KB Output is correct
27 Correct 106 ms 8528 KB Output is correct
28 Correct 90 ms 7764 KB Output is correct
29 Correct 81 ms 6996 KB Output is correct
30 Correct 80 ms 7504 KB Output is correct
31 Correct 98 ms 8784 KB Output is correct
32 Correct 48 ms 4436 KB Output is correct
33 Correct 49 ms 4940 KB Output is correct
34 Correct 121 ms 8020 KB Output is correct
35 Correct 76 ms 6900 KB Output is correct
36 Correct 1 ms 600 KB Output is correct
37 Correct 22 ms 2224 KB Output is correct
38 Correct 24 ms 2312 KB Output is correct
39 Correct 21 ms 2416 KB Output is correct
40 Correct 21 ms 2388 KB Output is correct
41 Correct 24 ms 2648 KB Output is correct
42 Correct 1 ms 600 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 1 ms 604 KB Output is correct
45 Correct 1 ms 604 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 46 ms 4292 KB Output is correct
48 Correct 67 ms 4592 KB Output is correct
49 Correct 1 ms 604 KB Output is correct
50 Correct 1 ms 604 KB Output is correct
51 Correct 133 ms 10324 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 1 ms 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Execution timed out 1582 ms 83364 KB Time limit exceeded
60 Halted 0 ms 0 KB -