Submission #857164

#	Time	Username	Problem	Language	Result	Execution time	Memory
857164		Trisanu_Das	Nautilus (BOI19_nautilus)	C++17	Compilation error	0 ms	0 KiB

nautilus

#include<bits/stdc++.h>
using namespace std;
int r, c, m, dp[100][100][100], res[100][100];
char a[100][100];
string s;

int dx[4] = {0, 0, -1, 1};
int dy[4] = {1, -1, 0, 0};

void dfs(int x, int y, int far) {
    if(!(0 <= x && x < r && 0 <= y && y < c && a[x][y] == '.')) return;
    if(far == m) {
        res[x][y] = 1; return;
    }
    if(dp[x][y][far]) return;
    dp[x][y][far] = 1;
    if(s[far] == 'E') dfs(x, y + 1, far + 1);
    else if(s[far] == 'W') dfs(x, y - 1, far + 1);
    else if(s[far] == 'N') dfs(x - 1, y, far + 1);
    else if(s[far] == 'S') dfs(x + 1, y, far + 1);
    else for(int i = 0; i < 4; i++) dfs(x + dx[i], y + dy[i], far + 1);
}
int main() {
    cin >> r >> c >> m;
    for(int i = 0; i < n; i++) cin >> a[i];
    cin >> s;
    for(int i = 0; i < r; i++) for(int j = 0; j < c; j++) if(a[i][j] == '.') dfs(i, j, 0);
    int ans = 0;
    for(int i = 0; i < r; i++) for(int j = 0; j < c; j++) if(a[i][j]) ans++; 
    cout << ans << '\n';
}

Compilation message (stderr)

nautilus.cpp: In function 'int main()':
nautilus.cpp:25:24: error: 'n' was not declared in this scope
   25 |     for(int i = 0; i < n; i++) cin >> a[i];
      |                        ^