Submission #526211

#	Time	Username	Problem	Language	Result	Execution time	Memory
526211		Yazan_Alattar	Nautilus (BOI19_nautilus)	C++14	29 / 100	15 ms	496 KiB

nautilus

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define F first
#define S second
#define pb push_back
#define endl "\n"
#define all(x) x.begin(), x.end()
const int M = 105;
const ll inf = 2e9;
const ll mod = 998244353;
const double pi = acos(-1);
const int dx[] = {1, 0, -1, 0}, dy[] = {0, 1, 0, -1};
const char dirs[] = {'S', 'E', 'N', 'W'};

vector < vector <ll> > dp(M, vector <ll> (M));
ll n, m, ans, len;
string s;
char a[M][M];

int main()
{
	cin >> n >> m >> len;
	for(int i = 1; i <= n; ++i) for(int j = 1; j <= m; ++j) cin >> a[i][j], dp[i][j] = 1;
	cin >> s;
	for(int idx = 0; idx < len; ++idx){
		vector < vector <ll> > to(M, vector <ll> (M));
		for(int i = 1; i <= n; ++i) for(int j = 1; j <= m; ++j) if(a[i][j] != '#')
			for(int dir = 0; dir < 4; ++dir) if(s[idx] == '?' || s[idx] == dirs[dir])
				to[i + dx[dir]][j + dy[dir]] += dp[i][j];
		dp = to;
	}
	for(int i = 1; i <= n; ++i) for(int j = 1; j <= m; ++j) if(a[i][j] != '#') ans += (dp[i][j] > 0);
	cout << ans << endl;
	return 0;
}

• Subtask 1: 29 / 29
• Subtask 2: 0 / 37
• Subtask 3: 0 / 34