Submission #512662

#	Time	Username	Problem	Language	Result	Execution time	Memory
512662		saral	Quality Of Living (IOI10_quality)	C++14	Compilation error	0 ms	0 KiB

quality

#include "quality.h"
const int N = 3010;
int pom[N][N];

bool check (int x, int n, int m, int h, int w) {
	memset (pom, 0, sizeof(pom));
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= m; j++) {
			if (a[i][j] <= x) pom[i][j] = 1;
			pom[i][j] = pom[i][j]+pom[i-1][j]+pom[i][j-1]-pom[i-1][j-1];
		}
	}
	/*for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= m; j++) {
			cout << pom[i][j] << " ";
		}
		cout << endl;
	}*/
	for (int i = h; i <= n; i++) {
		for (int j = w; j <= m; j++) {
			int val = pom[i][j]-pom[i-h][j]-pom[i][j-w]+pom[i-h][j-w];
			if (val >= (h*w+1)/2) return true;
		}
	}
	return false;
}
int rectangle(int R, int C, int H, int W, int Q[3001][3001]) {
	int lo = 1, hi = R*C, mid;

	while (lo < hi) {
		mid = (lo+hi)/2;
		if (check(mid, R, C, H, W)) {
			hi = mid;
		}
		else {
			lo = mid+1;
		}
	}
	return lo;
}

Compilation message (stderr)

quality.cpp: In function 'bool check(int, int, int, int, int)':
quality.cpp:6:2: error: 'memset' was not declared in this scope
    6 |  memset (pom, 0, sizeof(pom));
      |  ^~~~~~
quality.cpp:2:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    1 | #include "quality.h"
  +++ |+#include <cstring>
    2 | const int N = 3010;
quality.cpp:9:8: error: 'a' was not declared in this scope
    9 |    if (a[i][j] <= x) pom[i][j] = 1;
      |        ^