Submission #904015

#	Time	Username	Problem	Language	Result	Execution time	Memory
904015		vjudge1	Zoo (COCI19_zoo)	C++17	110 / 110	59 ms	6496 KiB

zoo

#include<bits/stdc++.h>
using namespace std;
int n, m;
bool check(int i, int j){
  return (i >= 0 && i < n && j >= 0 && j < m);
}
int dx[4] = {0, 1, 0, -1};
int dy[4] = {1, 0, -1, 0};
int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cin >> n >> m;
	vector<vector<char>>grid(n, vector<char>(m));
	for(int i = 0;i < n;++i){
		for(int j = 0;j < m;++j){
			cin >> grid[i][j];
		}
	}
	vector<vector<int>>dist(n, vector<int>(m, 1e9));
	dist[0][0] = 0;
	deque<pair<int, int>>q;
	q.push_front({0, 0});
	while(!q.empty()){
		int x = q.front().first, y = q.front().second;
		q.pop_front();
        for(int i = 0;i < 4;++i){
        	int cur_x = x + dx[i], cur_y = y + dy[i];
        	if(check(cur_x, cur_y) && dist[cur_x][cur_y] > dist[x][y] + (grid[x][y] != grid[cur_x][cur_y]) && grid[cur_x][cur_y] != '*'){
        		if(grid[x][y] != grid[cur_x][cur_y])q.push_back({cur_x, cur_y});
        		else q.push_front({cur_x, cur_y});
        		dist[cur_x][cur_y] = dist[x][y] + (grid[x][y] != grid[cur_x][cur_y]);
        	}
        }
	}
	int mx = 0;
	for(int i = 0;i < n;++i){
		for(int j = 0;j < m;++j){
			if(dist[i][j] != 1e9)mx = max(mx, dist[i][j]);
		}
	}
	cout << mx + 1;
}

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