Submission #752317

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
752317	2023-06-02 18:16:12	gnu	Dijamant (COCI22_dijamant)	C++14	70 / 70	226 ms	104896 KiB

Main

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#include <iostream>
#include <vector>
using namespace std;
vector<vector<long long>> pref;
long long get(int i, int l, int r)
{
  return pref[i][r+1] - pref[i][l];
}
int main()
{
  int n, m; cin >> n >> m;
  vector<string> mat(n);
  for (auto& x : mat) cin >> x;
  vector<vector<int>> a, b, c, d;
  a = b = c = d = vector<vector<int>>(n, vector<int>(m, -1));
  pref = vector<vector<long long>>(n, vector<long long>(m + 1));
  for (int i = 0; i < n; ++i) {
    for (int j = 1; j <= m; ++j) {
      pref[i][j] = pref[i][j - 1] + (mat[i][j - 1] == '#');
    }
  }
  //cout << get(2, 1, 6) << '\n';
  for (int i = 0; i < n; ++i) {
    for (int j = 0; j < m; ++j) {
      if (i > 0 && j + 2 < m) {
        if (mat[i][j] == '#' && mat[i][j + 1] == '.' && mat[i][j + 2] == '#' && mat[i - 1][j + 1] == '#') a[i][j] = 1, b[i][j + 2] = 1;
      }
    }
 
 
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• Subtask 1: 20 / 20
• Subtask 2: 50 / 50