/*
ID: varunra2
LANG: C++
TASK: quality
*/
#include<bits/stdc++.h>
#include "quality.h"
using namespace std;
#ifdef DEBUG
#include "lib/debug.h"
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define debug_arr(...) \
cerr << "[" << #__VA_ARGS__ << "]:", debug_arr(__VA_ARGS__)
#pragma GCC diagnostic ignored "-Wsign-compare"
//#pragma GCC diagnostic ignored "-Wunused-parameter"
//#pragma GCC diagnostic ignored "-Wunused-variable"
#else
#define debug(...) 42
#endif
#define EPS 1e-9
#define IN(A, B, C) assert(B <= A && A <= C)
#define INF (int)1e9
#define MEM(a, b) memset(a, (b), sizeof(a))
#define MOD 1000000007
#define MP make_pair
#define PB push_back
#define all(cont) cont.begin(), cont.end()
#define rall(cont) cont.end(), cont.begin()
#define x first
#define y second
const double PI = acos(-1.0);
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef map<int, int> MPII;
typedef multiset<int> MSETI;
typedef set<int> SETI;
typedef set<string> SETS;
typedef vector<int> VI;
typedef vector<PII> VII;
typedef vector<VI> VVI;
typedef vector<string> VS;
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define trav(a, x) for(auto& a : x)
#define sz(x) (int)(x).size()
typedef pair<int, int> pii;
typedef vector<int> vi;
#pragma GCC diagnostic ignored "-Wsign-compare"
// util functions
const int MAXN = 3003;
VVI pref(MAXN, VI(MAXN));
VVI vals(MAXN, VI(MAXN, INF));
int h, w, r, c;
void clr() {
trav(x, pref) {
trav(y, x) y = 0;
}
}
void genPref() {
for(int i = 0; i < MAXN; i++) {
for(int j = 0; j < MAXN; j++) {
if(i) pref[i][j] += pref[i - 1][j];
if(j) pref[i][j] += pref[i][j - 1];
if(i and j) pref[i][j] -= pref[i - 1][j - 1];
}
}
}
int qry(int a, int b, int c, int d) {
int ret = pref[c][d];
if(a) ret -= pref[a - 1][d];
if(b) ret -= pref[c][b - 1];
if(a and b) ret += pref[a - 1][b - 1];
return ret;
}
int qry(int i, int j) {
return qry(i - h + 1, j - w + 1, i, j);
}
void gen(int x) {
rep(i, 0, MAXN) rep(j, 0, MAXN) pref[i][j] = (bool)(vals[i][j] <= x);
genPref();
}
bool works(int x) {
gen(x);
rep(i, h - 1, MAXN) rep(j, w - 1, MAXN) {
if(qry(i, j) * 2 > h * w) return true;
}
return false;
}
int rectangle(int h, int w, int r, int c, int q[3005][3005]) {
rep(i, 0, r) rep(j, 0, c) vals[i][j] = --q[i][j];
::r = r;
::c = c;
::h = h;
::w = w;
int x = -1;
int z = r * c;
for(int b = z + 1; b >= 1; b /= 2) {
while(!(works(x + b))) x += b;
}
return x + 2;
}
// int main() {
// #ifndef ONLINE_JUDGE
// freopen("quality.in", "r", stdin);
// freopen("quality.out", "w", stdout);
// #endif
// cin.sync_with_stdio(0); cin.tie(0);
// int q;
// cin >> q;
// while(q--) {
// int h, w, r, c;
// cin >> h >> w >> r >> c;
// int q[r][c];
// for(int i = 0; i < r; i++) {
// for(int j = 0; j < c; j++) {
// }
// }
// }
// return 0;
// }
Compilation message
/tmp/cc834jjF.o: In function `main':
grader.cpp:(.text.startup+0xcd): undefined reference to `rectangle(int, int, int, int, int (*) [3001])'
collect2: error: ld returned 1 exit status
