Submission #723096

#	Time	Username	Problem	Language	Result	Execution time	Memory
723096		GrandTiger1729	Rectangles (IOI19_rect)	C++17	13 / 100	151 ms	49540 KiB

rect

#include "rect.h"
#include <bits/stdc++.h>
using namespace std;

long long count_rectangles(std::vector<std::vector<int>> g){
	int n = g.size(), m = g[0].size();
    int ans = 0;
    vector<pair<int, int>> res;
    for (int i = 1; i < n; i++){
        for (auto &[l, r]: res){
            bool flag = 0;
            for (int j = l; j <= r; j++)
                flag |= g[i][j] == 0;
            ans += !flag;
        }
        vector<pair<int, int>> tmp;
        for (auto &[l, r]: res){
            if (g[i][l - 1] == 1 && g[i][r + 1] == 1){
                bool flag = 0;
                for (int j = l; j <= r; j++)
                    flag |= g[i][j] == 1;
                if (!flag) 
                    tmp.emplace_back(l, r);
            }
        }
        for (int j = 0; j < m - 1; ){
            if (g[i][j] == 1){
                j++;
                int l = j, r = j;
                while (r < m && g[i][r] == 0)
                    r++;
                if (r == m) break;
                r--;
                if (i == 1 && l == 2 && r == 2)
                    cerr << "OK" << endl;
                bool flag = 0;
                for (; j <= r; j++)
                    flag |= g[i - 1][j] == 0;
                if (!flag && l <= r)
                    tmp.emplace_back(l, r);
            }else j++;
        }
        swap(res, tmp);
        // cerr << i << endl;
        // for (auto &[l, r]: res)
        //     cerr << l << ' ' << r << endl;
    }
    return ans;
}

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