Submission #1249089

#	Time	Username	Problem	Language	Result	Execution time	Memory
1249089		basa	삶의 질 (IOI10_quality)	C++20	Compilation error	0 ms	0 KiB

quality

#include "bits/stdc++.h"
#include "quality.h"

using namespace std;

int pref[3005][3005];
bool check(int m, int r, int c, int h, int w, int q[5][5]){
  memset(pref, 0, sizeof pref);
  for(int i = 1; i <= r; i++){
    for(int j = 1; j <= c; j++){
      pref[i][j] = pref[i - 1][j] + pref[i][j - 1] - pref[i - 1][j - 1];
      if(q[i - 1][j - 1] > m) pref[i][j]++;
    }
  }

  bool valid = 0;
  for(int i = 1; i <= r - h + 1; i++){
    for(int j = 1; j <= c - w + 1; j++){
      int br = i + h - 1, bc = j + w - 1;
      if((pref[br][bc] - pref[i - 1][bc] - pref[br][j - 1] + pref[i - 1][j - 1]) <= (h * w) / 2) valid = 1;
    }
  }

  if(valid) return 1;
  return 0;
}

int rectangle(int n, int m, int h, int w, int q[5][5]){
  int l = 1, r = n * m;
  while(l <= r){
    int mid = (l + r) / 2;

    if(check(mid, n, m, h, w, q)) r = mid - 1;
    else l = mid + 1;
  }

  return r + 1;
}

// signed main()
// {
//   cin.tie(0) -> sync_with_stdio(0);
//   int idk[5][5] = {{5,11,12,16,25}, {17,18,2,7,10}, {4,23,20,3,1}, {24,21,19,14,9}, {6,22,8,13,15}};
//   cout << rectangle(5, 5, 3, 3, idk);
// }

Compilation message (stderr)

/usr/bin/ld: /tmp/cck4y9Q3.o: in function `main':
grader.cpp:(.text.startup+0xe9): undefined reference to `rectangle(int, int, int, int, int (*) [3001])'
collect2: error: ld returned 1 exit status