Submission #398029

#	Time	Username	Problem	Language	Result	Execution time	Memory
398029		snasibov05	Rectangles (IOI19_rect)	C++14	15 / 100	5090 ms	45180 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));


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

                    bool flag = true;

                    for (int i = r1; i <= r2; ++i) {
                        rmx[i][c2] = max(rmx[i][c2-1], a[i][c2]);

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

                    }

                    for (int i = c1; i <= c2; ++i) {
                        cmx[i][r2] = max(cmx[i][r2-1], a[r2][i]);

                        if (cmx[i][r2] >= a[r1-1][i]) flag = false;
                        if (cmx[i][r2] >= a[r2+1][i]) flag = false;
                    }

                    if (flag) ans++;

                }
            }

            int x = 1;

        }
    }

    return ans;
}

Compilation message (stderr)

rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:41:17: warning: unused variable 'x' [-Wunused-variable]
   41 |             int x = 1;
      |                 ^

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