Submission #1039488

#	Time	Username	Problem	Language	Result	Execution time	Memory
1039488		ArthuroWich	Quality Of Living (IOI10_quality)	C++17	60 / 100	5050 ms	35096 KiB

quality

#include "quality.h"
#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef tree<pair<int, int>, null_type, less<pair<int, int>>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
int ans = INT_MAX, med, n, m;
int rectangle(int R, int C, int H, int W, int Q[3001][3001]) {
	int n = R, m = C, med = H*W/2, ans = INT_MAX;
	for (int j1 = 0; j1 < m; j1++) {
		int j2 = j1+W-1;
		if (j2 >= m) {
			break;
		}
		indexed_set c;
		for (int i = 0; i < H; i++) {
			for (int j = j1; j <= j2; j++) {
				c.insert({Q[i][j], i*C+j});
			}
		}
		pair<int, int> p = *c.find_by_order(med);
		ans = min(ans, p.first);
		for (int i2 = H; i2 < R; i2++) {
			int i1 = i2-H;
			for (int j = j1; j <= j2; j++) {
				c.erase({Q[i1][j], i1*C+j});
			}
			for (int j = j1; j <= j2; j++) {
				c.insert({Q[i2][j], i2*C+j});
			}
			p = *c.find_by_order(med);
			ans = min(ans, p.first);
		}
	}
	return ans;
}

Compilation message (stderr)

quality.cpp: In function 'int rectangle(int, int, int, int, int (*)[3001])':
quality.cpp:10:6: warning: unused variable 'n' [-Wunused-variable]
   10 |  int n = R, m = C, med = H*W/2, ans = INT_MAX;
      |      ^

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20