Submission #445553

#	Time	Username	Problem	Language	Result	Execution time	Memory
445553		ACE_	Zoo (COCI19_zoo)	C++14	110 / 110	115 ms	7268 KiB

zoo

#include<bits/stdc++.h>
#define f first
#define s second
using namespace std;
const int N = 1005;
int t, fix[N][N], n, m;
char a[N][N];
vector<pair<int, int> > next1, cur;
bool ok(int i, int j) {
	if (min(i, j) < 1 || i > n || j > m) return 0;
	return 1;
}
void dfs(int i, int j, char c) {
	if (!ok(i, j) || a[i][j] != c || fix[i][j]) return;
	fix[i][j] = 1;
	next1.push_back({ i,j });
	dfs(i + 1, j, c);
	dfs(i - 1, j, c);
	dfs(i, j - 1, c);
	dfs(i, j + 1, c);
}
main() {
	cin >> n >> m;
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= m; j++) {
			cin >> a[i][j];
		}
	}
	dfs(1, 1, a[1][1]);
	cur = next1;
	next1.clear();
	char c = a[1][1];
	int ans = 0;
	while (cur.size()) {
		ans++;
		c = 'T' + 'B' - c;
		for (int k = 0; k < cur.size(); k++) {
			int i = cur[k].f, j = cur[k].s;
			dfs(i + 1, j, c);
			dfs(i - 1, j, c);
			dfs(i, j - 1, c);
			dfs(i, j + 1, c);
		}
		cur = next1;
		next1.clear();
	}
	cout << ans;
}

Compilation message (stderr)

zoo.cpp:22:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   22 | main() {
      | ^~~~
zoo.cpp: In function 'int main()':
zoo.cpp:37:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |   for (int k = 0; k < cur.size(); k++) {
      |                   ~~^~~~~~~~~~~~

• Subtask 1: 45 / 45
• Subtask 2: 65 / 65