제출 #293700

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
293700		egekabas	Rectangles (IOI19_rect)	C++14	0 / 100	1 ms	384 KiB

rect

#include "rect.h"
#include <bits/stdc++.h>
#define all(x) (x).begin(), (x).end()
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll, ll> pll;
typedef pair<ull, ull> pull;
typedef pair<int, int> pii;
typedef pair<ld, ld> pld;
int n, m;
ll solven3(vector<std::vector<int> > a){
	vector<int> bad;
	for(int i = 0; i < m; ++i)
		if(a[1][i] >= a[0][i] || a[1][i] >= a[2][i]){
			bad.pb(i);
		}
	vector<pii> vec;
	ll ans = 0;
	for(int i = m-1; i >= 0; --i){
		while(vec.size()){
			int idx1 = upper_bound(all(bad), i)-bad.begin();
			int idx2 = upper_bound(all(bad), vec.back().ss)-bad.begin()-1;
			if(idx1 > idx2 && vec.back().ss != i+1)
				++ans;
			if(vec.back().ff > a[1][i])
				break;
			vec.pop_back();
		}
		vec.pb({a[1][i], i});
	}
	return ans;
}
long long count_rectangles(vector<std::vector<int> > a) {
	n = a.size();
	m = a[0].size();
	return solven3(a);

}

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