답안 #76041

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
76041 2018-09-12T00:31:07 Z tmwilliamlin168 Tracks in the Snow (BOI13_tracks) C++14
100 / 100
1243 ms 791708 KB
#include <bits/stdc++.h>
using namespace std;

const int mxN=4e3;
int n, m, ans, nb[4][2]={{1, 0}, {0, 1}, {-1, 0}, {0, -1}};
string g[mxN];
vector<array<int, 2>> tp[2];

bool a(int i, int j) {
	return i>=0&&i<n&&j>=0&&j<m&&g[i][j]!='.';
}

void dfs(int i, int j) {
	char pc=g[i][j];
	g[i][j]='.';
	for(int k=0; k<4; ++k) {
		int ni=i+nb[k][0], nj=j+nb[k][1];
		if(!a(ni, nj))
			continue;
		if(g[ni][nj]==pc)
			dfs(ni, nj);
		else
			tp[ans&1^1].push_back({ni, nj});
	}
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	
	cin >> n >> m;
	for(int i=0; i<n; ++i)
		cin >> g[i];
	tp[0].push_back({0, 0});
	for(; tp[ans&1].size(); ++ans) {
		for(array<int, 2> u : tp[ans&1])
			if(a(u[0], u[1]))
				dfs(u[0], u[1]);
		tp[ans&1].clear();
	}
	cout << ans;
}

Compilation message

tracks.cpp: In function 'void dfs(int, int)':
tracks.cpp:23:10: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
    tp[ans&1^1].push_back({ni, nj});
       ~~~^~
# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 1400 KB Output is correct
2 Correct 3 ms 1400 KB Output is correct
3 Correct 3 ms 1400 KB Output is correct
4 Correct 12 ms 2496 KB Output is correct
5 Correct 4 ms 2496 KB Output is correct
6 Correct 3 ms 2496 KB Output is correct
7 Correct 2 ms 2496 KB Output is correct
8 Correct 3 ms 2496 KB Output is correct
9 Correct 2 ms 2496 KB Output is correct
10 Correct 4 ms 2496 KB Output is correct
11 Correct 4 ms 2496 KB Output is correct
12 Correct 8 ms 2496 KB Output is correct
13 Correct 4 ms 2496 KB Output is correct
14 Correct 4 ms 2496 KB Output is correct
15 Correct 16 ms 2496 KB Output is correct
16 Correct 22 ms 2740 KB Output is correct
17 Correct 10 ms 2740 KB Output is correct
18 Correct 12 ms 4116 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4116 KB Output is correct
2 Correct 44 ms 5872 KB Output is correct
3 Correct 229 ms 29304 KB Output is correct
4 Correct 49 ms 29304 KB Output is correct
5 Correct 188 ms 29304 KB Output is correct
6 Correct 809 ms 99188 KB Output is correct
7 Correct 3 ms 99188 KB Output is correct
8 Correct 4 ms 99188 KB Output is correct
9 Correct 4 ms 99188 KB Output is correct
10 Correct 3 ms 99188 KB Output is correct
11 Correct 3 ms 99188 KB Output is correct
12 Correct 3 ms 99188 KB Output is correct
13 Correct 44 ms 99188 KB Output is correct
14 Correct 26 ms 99188 KB Output is correct
15 Correct 17 ms 99188 KB Output is correct
16 Correct 25 ms 99188 KB Output is correct
17 Correct 112 ms 99188 KB Output is correct
18 Correct 57 ms 99188 KB Output is correct
19 Correct 48 ms 99188 KB Output is correct
20 Correct 54 ms 99188 KB Output is correct
21 Correct 136 ms 99188 KB Output is correct
22 Correct 184 ms 99188 KB Output is correct
23 Correct 222 ms 99188 KB Output is correct
24 Correct 128 ms 99188 KB Output is correct
25 Correct 294 ms 99188 KB Output is correct
26 Correct 1243 ms 791708 KB Output is correct
27 Correct 932 ms 791708 KB Output is correct
28 Correct 774 ms 791708 KB Output is correct
29 Correct 767 ms 791708 KB Output is correct
30 Correct 833 ms 791708 KB Output is correct
31 Correct 686 ms 791708 KB Output is correct
32 Correct 941 ms 791708 KB Output is correct