oj.uz

Submission #198303

# Submission time Handle Problem Language Result Execution time Memory
198303 2020-01-25T13:58:15 Z ZwariowanyMarcin Zoo (COCI19_zoo) C++14
110 / 110
 74 ms 8180 KB 
#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair
#define ss(x) (int) x.size()
#define pb push_back
#define LL long long
#define ld double
#define cat(x) cerr << #x << " = " << x << endl
#define FOR(i, j, n) for(int i = j; i <= n; ++i)
#define boost cin.tie(0), ios_base::sync_with_stdio(0);


using namespace std;		

const int nax = 1010;

int n, m;
char s[nax][nax];
int t[nax][nax];
bool odw[nax][nax];

vector <pair<int, int>> special, all;

bool in(int r, int c) {
	return 1 <= r && r <= n && 1 <= c && c <= m;
}

int dx[] = {0, 0, 1, -1};
int dy[] = {1, -1, 0, 0};

int znak;

void dfs(int r, int c) {
	odw[r][c] = 1;
	all.pb(mp(r, c));
	
	for (int g = 0; g < 4; ++g) {
		int nr = r + dx[g];
		int nc = c + dy[g];
		if (!in(nr, nc) || t[nr][nc] != znak || odw[nr][nc]) continue;
		dfs(nr, nc);
	}
}

int main() {
	scanf ("%d%d", &n, &m);
	for (int i = 1; i <= n; ++i) {
		scanf ("%s", s[i] + 1);
		for (int j = 1; j <= m; ++j) {
			if (s[i][j] == '*') t[i][j] = 2;
			else t[i][j] = (s[i][j] == 'T');
		}
	}
	
	special.pb(mp(1, 1));
	int ans = 0;
	
	while (true) {
		if (special.empty()) break;
		ans++;
		
		znak = t[special[0].fi][special[0].se];
		all.clear();
		for (auto it : special) 
			if (!odw[it.fi][it.se])
				dfs(it.fi, it.se);
		
		special.clear();
		
		for (auto it : all)
			for (int g = 0; g < 4; ++g) {
				int nr = it.fi + dx[g];
				int nc = it.se + dy[g];
				if (!in(nr, nc) || (znak != (t[nr][nc] ^ 1)) || odw[nr][nc]) continue;
					special.pb(mp(nr, nc));
			}
	}
	printf ("%d\n", ans);
	
	
	return 0;
}

Compilation message

zoo.cpp: In function 'int main()':
zoo.cpp:47:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf ("%d%d", &n, &m);
  ~~~~~~^~~~~~~~~~~~~~~~
zoo.cpp:49:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf ("%s", s[i] + 1);
   ~~~~~~^~~~~~~~~~~~~~~~

Subtask #1
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 632 KB Output is correct
5 Correct 3 ms 1064 KB Output is correct
6 Correct 4 ms 1016 KB Output is correct
7 Correct 3 ms 1020 KB Output is correct
8 Correct 3 ms 888 KB Output is correct
9 Correct 3 ms 888 KB Output is correct
10 Correct 3 ms 1016 KB Output is correct
11 Correct 3 ms 880 KB Output is correct
12 Correct 3 ms 888 KB Output is correct
13 Correct 3 ms 888 KB Output is correct
14 Correct 4 ms 1016 KB Output is correct
15 Correct 3 ms 760 KB Output is correct

Subtask #2
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 632 KB Output is correct
5 Correct 3 ms 1064 KB Output is correct
6 Correct 4 ms 1016 KB Output is correct
7 Correct 3 ms 1020 KB Output is correct
8 Correct 3 ms 888 KB Output is correct
9 Correct 3 ms 888 KB Output is correct
10 Correct 3 ms 1016 KB Output is correct
11 Correct 3 ms 880 KB Output is correct
12 Correct 3 ms 888 KB Output is correct
13 Correct 3 ms 888 KB Output is correct
14 Correct 4 ms 1016 KB Output is correct
15 Correct 3 ms 760 KB Output is correct
16 Correct 19 ms 8052 KB Output is correct
17 Correct 23 ms 8052 KB Output is correct
18 Correct 18 ms 8180 KB Output is correct
19 Correct 22 ms 8048 KB Output is correct
20 Correct 20 ms 8052 KB Output is correct
21 Correct 72 ms 7160 KB Output is correct
22 Correct 72 ms 7368 KB Output is correct
23 Correct 70 ms 7288 KB Output is correct
24 Correct 74 ms 7672 KB Output is correct
25 Correct 72 ms 7492 KB Output is correct
26 Correct 74 ms 7232 KB Output is correct
27 Correct 70 ms 7288 KB Output is correct
28 Correct 69 ms 7160 KB Output is correct
29 Correct 73 ms 7544 KB Output is correct
30 Correct 74 ms 7416 KB Output is correct