Submission #534264

#	Time	Username	Problem	Language	Result	Execution time	Memory
534264		ac2hu	Untitled (POI11_tem)	C++14	0 / 100	1097 ms	7244 KiB

Main

#include <bits/stdc++.h>
#ifdef DEBUG
#include "../templates/debug.h"
#else 
#define deb(x...)
#endif
using namespace std;
signed main() {
	iostream::sync_with_stdio(false);
	cin.tie(nullptr);cout.tie(nullptr);
	int n;cin >> n;
	vector<pair<int,int>> a(n);
	for(auto &e : a)cin >> e.first >> e.second;
	int l = 1,r = n;
	auto check = [&](int mid) -> bool{
		for(int i = 0;i<n - mid + 1;i++){
			int cur = 0;
			int l = 0;
			for(int j = i;j<mid + i;j++){
				cur = max(cur, a[j].first);
				if(cur > a[j].second){
					break;
				}
				l++;
			}
			if(l == mid){
				deb(i,mid);
				return true;
			}
		}
		return false;
	};
	while(l < r){
		int mid = (l + r + 1)/2;
		// cout << mid << "\n";
		if(check(mid)){
			l = mid;
		}
		else
			r = mid - 1;
	}
	cout << l << "\n";
}

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