Submission #7135504

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Source Code Expand

#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <numeric>
//#include <stdio.h>
//#include <stack>
//#include <queue>
//#include <cstdio>
#include <cmath>
#include <iterator>
#include <map>
//#include <fstream>
//#include <list>
#include <iomanip>
//#include <stdlib.h>
//#include <cctype>

using namespace std;

const int MAX_N = 1000000;
#define IOS ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define prec std::cout << std::fixed << std::setprecision(15);
#define endl "\n"
#define MOD 1000000007
#define Int int64_t
#define PI 3.14159265358979
#define rep(i, n) for (int i = 0; i < int(n); i++)
#define ssort(z) sort(z.begin(), z.end())
#define rsort(z) sort(z.rbegin(), z.rend())
#define eerase(z) z.erase(unique(z.begin(), z.end()), z.end())
#define ccnt(z, w) count(z.begin(), z.end(), w)

void printVec(std::vector<int> & vec)
{
	std::cout << "";
	for (auto it = vec.begin(); it != vec.end(); ++it)
	{
		std::cout << *it << " ";
	}
	cout << '\n';
}
void printVec1(std::vector<string>& vec)
{
	std::cout << "";
	for (auto it = vec.begin(); it != vec.end(); ++it)
	{
		std::cout << *it << " ";
	}
	cout << '\n';
}
void printVec2(std::vector<Int>& vec)
{
	std::cout << "";
	for (auto it = vec.begin(); it != vec.end(); ++it)
	{
		std::cout << *it << " ";
	}
	cout << '\n';
}

Int gcd(Int a, Int b)
{
	return b != 0 ? gcd(b, a % b) : a;
}
Int lcm(Int a, Int b)
{
	return a / gcd(a, b) * b;
	//a*bは64bit integer overflow
}

bool integer(double num)
{
	return floor(num) == num;
}

Int fact(int num)
{
	if (num == 0)
		return 1;
	else
		return num * fact(num - 1);
}

char maps[502][502];
bool visit[502][502];
int h, w;
void dfs(int hh,int ww){
	if(visit[hh][ww])return;
	if(maps[hh][ww]=='#'||hh<0||ww<0||hh>=h||ww>=w)return;
	visit[hh][ww] = true;
	dfs(hh-1, ww);
	dfs(hh, ww-1);
	dfs(hh+1, ww);
	dfs(hh, ww+1);
}


int main(){
	IOS;
	cin >> h >>w;
	int sw, sh,gw, gh;
	string s;
	for (int i = 0; i < h;i++){
		cin >> s;
		for (int j = 0; j < w;j++){
			if(s[j]=='s'){
				sw = j;
				sh = i;
			}
			if(s[j]=='g'){
				gw = j;
				gh = i;
			}
			maps[i][j]=s[j];
		}
	}
	dfs(sh, sw);
	if(visit[gh][gw])
		cout << "Yes";
	else
		cout << "No";

	cout << endl;
	return 0;
}

/*
テレビも無ェ ラジオも無ェ
自動車もそれほど走って無ェ
ピアノも無ェ バーも無ェ
巡査 毎日ぐーるぐる
朝起ぎで 牛連れで
二時間ちょっとの散歩道
電話も無ェ 瓦斯も無ェ
バスは一日一度来る
俺らこんな村いやだ 俺らこんな村いやだ
東京へ出るだ 東京へ出だなら
銭コァ貯めで 東京でベコ(牛)飼うだ
*/

Submission Info

Judge Result