제출 #384221

#제출 시각아이디문제언어결과실행 시간메모리
384221kaplanbar무제 (POI11_tem)C++14
100 / 100
256 ms31392 KiB
#include <bits/stdc++.h> using namespace std; using ll = long long; int main() { ios_base::sync_with_stdio(false); cin.tie(0); int n; cin >> n; vector<pair<int,int>> v(n); for(int i = 0; i < n; i++) { cin >> v[i].first >> v[i].second; } int j = 0; queue<int> s; int ans = 0; for(int i = 0; i < n; i++) { j = max(j, i); while(j < n && (s.empty() || v[j].second >= v[s.front()].first)) { while(!s.empty() && v[s.front()].first <= v[j].first) s.pop(); s.push(j); j++; } ans = max(ans, j - i); if(!s.empty() && s.front() == i) s.pop(); } cout << ans; return 0; }
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