Submission #398011

#	Time	Username	Problem	Language	Result	Execution time	Memory
398011		snasibov05	Rectangles (IOI19_rect)	C++14	0 / 100	373 ms	1324 KiB

rect

#include "rect.h"

using namespace std;


long long count_rectangles(std::vector<std::vector<int> > a) {
	int n = a.size();
	int m = a[0].size();

    long long ans = 0;
    for (int r1 = 1; r1 < n-1; ++r1) {
        for (int c1 = 1; c1 < m-1; ++c1) {

            vector<vector<int>> rmx(n, vector<int>(m)), cmx(m, vector<int>(n));

            int mx_r = n-1;
            int mx_c = m-1;

            for (int r2 = r1; r2 < n-1; ++r2) {
                for (int c2 = c1; c2 < m-1; ++c2) {

                    bool flag = true;

                    rmx[r2][c2] = max(rmx[r2][c2-1], a[r2][c2]);
                    cmx[c2][r2] = max(cmx[c2][r2-1], a[r2][c2]);

                    if (rmx[r2][c2] >= a[r2][c1-1]) mx_r = r2 , flag = false;
                    if (rmx[r2][c2] >= a[r2][c2+1]) flag = false;

                    if (cmx[c2][r2] >= a[r1-1][c2]) mx_c = c2, flag = false;
                    if (cmx[c2][r2] >= a[r2+1][c2]) flag = false;

                    if (flag) ans++;

                }
            }
        }
    }

    return ans;
}

Compilation message (stderr)

rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:16:17: warning: variable 'mx_r' set but not used [-Wunused-but-set-variable]
   16 |             int mx_r = n-1;
      |                 ^~~~
rect.cpp:17:17: warning: variable 'mx_c' set but not used [-Wunused-but-set-variable]
   17 |             int mx_c = m-1;
      |                 ^~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 7
• Subtask 3: 0 / 12
• Subtask 4: 0 / 22
• Subtask 5: 0 / 10
• Subtask 6: 0 / 13
• Subtask 7: 0 / 28