Submission #1001605

#	Time	Username	Problem	Language	Result	Execution time	Memory
1001605		vjudge1	Robots (APIO13_robots)	C++17	10 / 100	0 ms	600 KiB

robots

#include<iostream>
#include<cmath>
#include<algorithm>
#include<vector>
#include<set>
#include<queue>


using namespace std;

#define int long long
#define len(x) (int)x.size()
#define all(x) (x).begin() , (x).end()
#define Bekabot ios_base::sync_with_stdio(NULL);cin.tie(0);cout.tie(0);
#define pb push_back
#define pii pair<int , int>
#define F first
#define S second
#define fopen(s) freopen(s".in","r",stdin);freopen(s".out","w",stdout)

const int N = 1e5 + 78 , M = 1e9 + 7 , inf = 1e18;
int n , w , h;
char a[505][505];
int dp[15][15][15];
int tmp = 1;
bool used[15][15];
void dfs(int x , int y , int p = 0){
	used[x][y] = 1;
	if(p != 1){
		int y1 = y;
		while(y < w and a[x][y + 1] != 'x')y++;
		dp[tmp][x][y] = min(dp[tmp][x][y] , dp[tmp][x][y1] + 1);
		if(!used[x][y])dfs(x , y , 1);
		y = y1;
	}
	if(p != 2){
		int y1 = y;
		while(y > 1 and a[x][y - 1] != 'x')y--;
		dp[tmp][x][y] = min(dp[tmp][x][y] , dp[tmp][x][y1] + 1);
		if(!used[x][y])dfs(x , y , 2);
		y = y1;	
	}
	if(p != 3){
		int x1 = x;
		while(x > 1 and a[x - 1][y] != 'x')x--;
		dp[tmp][x][y] = min(dp[tmp][x][y] , dp[tmp][x1][y] + 1);
		if(!used[x][y])dfs(x , y , 3);
		x = x1;			
	}
	if(p != 4){
		int x1 = x;
		while(x < h and a[x + 1][y] != 'x')x++;
		dp[tmp][x][y] = min(dp[tmp][x][y] , dp[tmp][x1][y] + 1);
		if(!used[x][y])dfs(x , y , 4);
		x = x1;		
	}
}
//1 >
//2 <
//3 ^
//4 v
void skibidi_dop_dop_dop_yes_yes(){
	cin >> n >> w >> h;
	vector<pii> v;
	for(int i = 1 ; i <= h ; i++){
		for(int j = 1 ; j <= w ; j++){
			cin >> a[i][j];
			dp[1][i][j] = dp[2][i][j] = inf;
			if(a[i][j] >= '1' and a[i][j] <= '9')v.pb({i , j});
		}
	}
	for(auto it : v){
		dp[tmp][it.F][it.S] = 0;
		dfs(it.F , it.S);
		tmp++;
		for(int i = 1 ; i <= h ; i++)for(int j = 1 ; j <= w ; j++)used[i][j] = 0;
	}
	int mn = inf;
	for(int i = 1 ; i <= h ; i++){
		for(int j = 1 ; j <= w ; j++){
			mn = min(mn , dp[1][i][j] + dp[2][i][j]);
		}
	}
	if(mn < inf)cout << mn;
	else cout << -1;
	
}

signed main(){
	int t = 1;
	Bekabot
	while(t--)skibidi_dop_dop_dop_yes_yes();
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40