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Submission #825954

# Submission time Handle Problem Language Result Execution time Memory
825954 2023-08-15T09:30:23 Z vjudge1 Dijamant (COCI22_dijamant) C++17
70 / 70
 211 ms 240984 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;

const int dx[4] = {0, 1, 0, -1}, dy[4] = {1, 0, -1, 0};
const int oo = 1e9;
int n, m, sol;
char a[2020][2020];
bool vis[2020][2020];

int min_sm, max_sm, min_diff, max_diff, check, cnt;

void dfs(int x, int y)
{
    if ((x == 0) || (x == n + 1) || (y == 0) || (y == m + 1))
    {
        check = 0;
        return;
    }
    if (vis[x][y] || a[x][y] == '#')
        return;
    vis[x][y] = 1;
    cnt++;

    min_sm = min(min_sm, x + y);
    max_sm = max(max_sm, x + y);
    min_diff = min(min_diff, x - y);
    max_diff = max(max_diff, x - y);

    for (int i = 0; i < 4; i++)
    {
        int nx = x + dx[i], ny = y + dy[i];
        dfs(nx, ny);
    }
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    if (fopen("DIAMOND.inp", "r"))
    {
        freopen("DIAMOND.inp", "r", stdin);
        freopen("DIAMOND.out", "w", stdout);
    }
    cin >> n >> m;
    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= m; j++)
            cin >> a[i][j];
    ll sol = 0;
    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= m; j++)
        {
            if (vis[i][j] || a[i][j] == '#')
                continue;
            min_sm = min_diff = oo;
            max_sm = max_diff = -oo;
            check = 1;
            cnt = 0;
            dfs(i, j);
            if (max_sm - min_sm == max_diff - min_diff && (max_sm - min_sm) % 2 == 0 && check)
            {
                int d = (max_sm - min_sm) / 2 + 1;
                if (cnt == 2 * d * d - 2 * d + 1)
                    sol++;
            }
        }
    cout << sol;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:43:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |         freopen("DIAMOND.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:44:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |         freopen("DIAMOND.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1236 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 1108 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 1 ms 724 KB Output is correct
7 Correct 1 ms 724 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 728 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 1 ms 1108 KB Output is correct
13 Correct 1 ms 596 KB Output is correct

Subtask #2
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1236 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 1108 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 1 ms 724 KB Output is correct
7 Correct 1 ms 724 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 728 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 1 ms 1108 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 211 ms 240984 KB Output is correct
15 Correct 37 ms 7728 KB Output is correct
16 Correct 102 ms 11084 KB Output is correct
17 Correct 175 ms 166384 KB Output is correct
18 Correct 55 ms 12000 KB Output is correct
19 Correct 133 ms 53204 KB Output is correct
20 Correct 122 ms 46656 KB Output is correct
21 Correct 121 ms 28964 KB Output is correct
22 Correct 111 ms 19028 KB Output is correct
23 Correct 127 ms 17720 KB Output is correct
24 Correct 124 ms 19120 KB Output is correct
25 Correct 197 ms 211296 KB Output is correct
26 Correct 71 ms 10884 KB Output is correct