oj.uz

Submission #542574

# Submission time Handle Problem Language Result Execution time Memory
542574 2022-03-26T23:54:09 Z Zhora_004 Dijamant (COCI22_dijamant) C++17
70 / 70
 70 ms 16680 KB 
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <cmath>
#include <algorithm>
#include <vector>
#include <set>
#include <unordered_set>
#include <queue>
#include <deque>
#include <string>
#include <sstream>
#include <iomanip>
#include <map>
#include <unordered_map>
#include <stack>
#include <cstdio>
#include <climits>
#include <tuple>
#include <ctime>
#include <cstring>
#include <numeric>
#include <functional>
#include <chrono>
#include <cassert>
#include <bitset>
//#include <bit>
//#include <ranges>
//#include <numbers>
#define itn int
#define sacnf scanf
#define sz(a) ((int)((a).size()))
// printf("%.10f\n", ans);
using ll = long long;
using namespace std;
const ll mod = 1e9 + 7;
const int N = 1e6 + 1, inf = 1e9;

int find_sum(vector<vector<int>>& pref, int i, int l, int r)
{
    if (l == 0) return pref[i][r];
    return pref[i][r] - pref[i][l - 1];
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n, m;
    cin >> n >> m;
    vector<vector<bool>> v(n, vector<bool>(m));
    vector<vector<int>> pref(n, vector<int>(m));
    for (int i = 0; i < n; i++)
    {
        string s;
        cin >> s;
        for (int j = 0; j < m; j++)
        {
            if (s[j] == '#') v[i][j] = 1;
            if (j == 0) pref[i][j] = v[i][j];
            else pref[i][j] = pref[i][j - 1] + v[i][j];
        }
    }
    int ans = 0;
    for (int i = 0; i < n - 2; i++)
    {
        for (int j = 1; j < m - 1; j++)
        {
            if (v[i][j])
            {
                if (v[i + 1][j]) continue;
                if (!v[i + 1][j - 1] || !v[i + 1][j + 1]) continue;
                int k = i + 1, l = j - 1, r = j + 1;
                bool flag = 0;
                while (k + 1 < n)
                {
                    if (v[k + 1][l + 1] && v[k + 1][r - 1])
                    {
                        if (l + 1 == r - 1)
                        {
                            ans++;
                            break;
                        }
                        int sm = find_sum(pref, k + 1, l + 1, r - 1);
                        if (sm != 2) break;
                        flag = 1;
                        k++;
                        l++;
                        r--;
                    }
                    else
                    {
                        if (flag) break;
                        if (l == 0 || r == m - 1) break;
                        if (!v[k + 1][l - 1] || !v[k + 1][r + 1]) break;
                        int sm = find_sum(pref, k + 1, l - 1, r + 1);
                        if (sm != 2) break;
                        k++;
                        l--;
                        r++;
                    }
                }
            }
        }
    }
    cout << ans;

    return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 464 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct

Subtask #2
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 464 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 26 ms 15488 KB Output is correct
15 Correct 28 ms 15888 KB Output is correct
16 Correct 70 ms 14752 KB Output is correct
17 Correct 29 ms 14620 KB Output is correct
18 Correct 40 ms 16680 KB Output is correct
19 Correct 24 ms 14156 KB Output is correct
20 Correct 27 ms 16476 KB Output is correct
21 Correct 23 ms 14076 KB Output is correct
22 Correct 42 ms 14944 KB Output is correct
23 Correct 35 ms 14236 KB Output is correct
24 Correct 43 ms 15324 KB Output is correct
25 Correct 23 ms 14064 KB Output is correct
26 Correct 31 ms 14544 KB Output is correct