Submission #349015

#	Time	Username	Problem	Language	Result	Execution time	Memory
349015		apostoldaniel854	Furniture (JOI20_furniture)	C++14	Compilation error	0 ms	0 KiB

furniture

#include <bits/stdc++.h>

using namespace std;

#define pb push_back

const int MAX_N = 1000;
bool blocked[1 + MAX_N][1 + MAX_N];
void go_stupid (int x, int y) {
    if (x >= 1 && x <= n && y >= 1 && y <= m) {
        if (not blocked[x][y]) {
            blocked[x][y] = true;
            diag[x + y]--;
            if (blocked[x - 1][y + 1]) {
                go_stupid (x, y + 1);
                go_stupid (x - 1, y);
            }
            if (blocked[x + 1][y - 1]) {
                go_stupid (x, y - 1);
                go_stupid (x + 1, y);
            }
        }
    }
}
int main() {
    ios::sync_with_stdio (false);
    cin.tie (0); cout.tie (0);
    int n, m;
    cin >> n >> m;
    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= m; j++) {
            int x;
            cin >> x;
            if (x)
                diag[i + j]++;
            else
                go_stupid (i, j);
        }
    int q;
    cin >> q;
    while (q--) {
        int x, y;
        cin >> x >> y;
        if (blocked[x][y])
            cout << "1\n";
        else if (diag[x][y] == 1) 
            cout << "0\n";
        else {
            cout << "1\n";
            go_stupid (x, y);
        }
    }
    return 0;
}

Compilation message (stderr)

furniture.cpp: In function 'void go_stupid(int, int)':
furniture.cpp:10:24: error: 'n' was not declared in this scope
   10 |     if (x >= 1 && x <= n && y >= 1 && y <= m) {
      |                        ^
furniture.cpp:10:44: error: 'm' was not declared in this scope
   10 |     if (x >= 1 && x <= n && y >= 1 && y <= m) {
      |                                            ^
furniture.cpp:13:13: error: 'diag' was not declared in this scope
   13 |             diag[x + y]--;
      |             ^~~~
furniture.cpp: In function 'int main()':
furniture.cpp:35:17: error: 'diag' was not declared in this scope
   35 |                 diag[i + j]++;
      |                 ^~~~
furniture.cpp:46:18: error: 'diag' was not declared in this scope
   46 |         else if (diag[x][y] == 1)
      |                  ^~~~