Submission #1246381

#	Time	Username	Problem	Language	Result	Execution time	Memory
1246381		CyberCow	Mosaic (IOI24_mosaic)	C++20	5 / 100	1098 ms	38872 KiB

mosaic

#include "mosaic.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;

vector<int> a[200005];
vector<int> pref[200005];

int gum(int x, int x1, int y, int y1)
{
  int arj = pref[x1][y1];
  if(x)arj -= pref[x - 1][y1];
  if(y)arj-=pref[x1][y - 1];
  if(x && y)arj += pref[x - 1][y - 1];
  return arj;
}

vector<long long> mosaic(vector<int> X, vector<int> Y,
                              vector<int> T, vector<int> B,
                              vector<int> L, vector<int> R) {
  int Q = (int)T.size();
  vector<long long> C(Q, 0);
  pref[0].push_back(X[0]);
  a[0].push_back(X[0]);
  for (int i = 1; i < X.size(); i++)
  {
    a[0].push_back(X[i]);
    pref[0].push_back(pref[0][i - 1] + a[0][i]);
  }
  for (int i = 1; i < Y.size(); i++)
  {
    a[i].push_back(Y[i]);
    pref[i].push_back(pref[i - 1][0] + a[i][0]);
  }
  int n = X.size();
  for (int i = 1; i < n; i++)
  {
    for (int j = 1; j < n; j++)
    {
      if(i <= 2 || j <= 2)
      {
        if(a[i - 1][j] == 0 && a[i][j - 1] == 0)
        {
          a[i].push_back(1);
        }
        else
        {
          a[i].push_back(0);
        }
        pref[i].push_back(pref[i - 1][j] + pref[i][j - 1] - pref[i - 1][j - 1] + a[i][j]);
      }
    }
  }
  for (int i = 0; i < Q; i++)
  {
    C[i] = gum(T[i], B[i], L[i], R[i]);
  }
  return C;
}

• Subtask 0: 0 / 0
• Subtask 1: 5 / 5
• Subtask 2: 0 / 7
• Subtask 3: 0 / 7
• Subtask 4: 0 / 10
• Subtask 5: 0 / 8
• Subtask 6: 0 / 22
• Subtask 7: 0 / 19
• Subtask 8: 0 / 22