Submission #1047742

#	Time	Username	Problem	Language	Result	Execution time	Memory
1047742		vjudge1	Rectangles (IOI19_rect)	C++17	10 / 100	1 ms	348 KiB

rect

#include "rect.h"

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

const int lim=3000;

long long count_rectangles(std::vector<std::vector<int> > a) {
	int n=a.size();
	int m=a[0].size();
	if(n<3)return 0;
	if(n==3){
		vector<int>st;
		long int ans=0;
		for(int i=0;i<m;i++){
			if(1<st.size())
				for(int j=int(st.size())-2;0<=j;j--){
					if(a[1][st[j+1]]<a[1][i]){
						ans++;
					}else{
						break;
					}
				}
			while(st.size()&&a[1][st.back()]<a[1][i]){
				st.pop_back();
			}
			if(a[0][i]<=a[1][i]||a[2][i]<=a[1][i]){
				st.clear();
			}
			st.push_back(i);
		}
		return ans;
	}
	return -1;
}

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