Submission #645083

#	Time	Username	Problem	Language	Result	Execution time	Memory
645083		mychecksedad	Nautilus (BOI19_nautilus)	C++17	66 / 100	49 ms	67016 KiB

nautilus

/* Author : Mychecksdead */
#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef long double ld;
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define PI 3.1415926535
#define pb push_back
#define setp() cout << setprecision(15)
#define all(x) x.begin(), x.end()
#define debug(x) cerr << #x << " is " << x << '\n';
const int N = 1e6+100, M = 1e5+10, F = 2147483646, K = 20;



int n, m, k, arr[4][2] = {{1, 0}, {-1, 0}, {0, 1}, {0, -1}};
bool dp[105][105][105];
string s[N], t;
void solve(){
    cin >> n >> m >> k;
    for(int i = 0; i < n; ++i) cin >> s[i];
    cin >> t;
    for(int i = 0; i < n; ++i) for(int j = 0; j < m; ++j) for(int l = 0; l <= k; ++l) dp[i][j][l] = 0;
    for(int i = 0; i < n; ++i) for(int j = 0; j < m; ++j) if(s[i][j] == '.') dp[i][j][0] = 1;
    int ans = 0;
    for(int l = 1; l <= k; ++l){
        for(int i = 0; i < n; ++i){
            for(int j = 0; j < m; ++j){
                if(dp[i][j][l - 1]){
                    int x = i, y = j;
                    if(t[l - 1] == '?'){
                        for(int h = 0; h < 4; ++h){
                            x += arr[h][0], y += arr[h][1];
                            if(x>=0&&x<n&&y>=0&&y<m&&s[x][y]=='.') dp[x][y][l] = 1;
                            x -= arr[h][0], y -= arr[h][1];
                        }
                    }else{
                        if(t[l - 1] == 'N') x--;
                        else if(t[l - 1] == 'S') x++;
                        else if(t[l - 1] == 'W') y--;
                        else y++;
                        if(x>=0&&x<n&&y>=0&&y<m&&s[x][y]=='.') dp[x][y][l] = 1;
                    }
                }
            }
        }
    }
    for(int i = 0; i < n; ++i) for(int j = 0; j < m; ++j) ans += dp[i][j][k];
    cout << ans;
}





int main(){
    cin.tie(0); ios::sync_with_stdio(0);
    int T = 1, aa;
    // cin >> T;aa=T;
    while(T--){
        // cout << "Case #" << aa-T << ": ";
        solve();
        cout << '\n';
    }
    return 0;
 
}

Compilation message (stderr)

nautilus.cpp: In function 'int main()':
nautilus.cpp:59:16: warning: unused variable 'aa' [-Wunused-variable]
   59 |     int T = 1, aa;
      |                ^~

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