Submission #384210

#TimeUsernameProblemLanguageResultExecution timeMemory
384210kaplanbarUntitled (POI11_tem)C++14
24 / 100
1093 ms14316 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<ll,ll>> v(n);

    for(int i = 0; i < n; i++) {
        cin >> v[i].first >> v[i].second;
    }

    int ans = 0;

    for(int i = 0; i < n; i++) {
        ll mx = -1e18;
        for(int j = i; j < n; j++) {
            if(v[j].second >= mx) {
                ans = max(ans, j - i + 1);
                mx = max(mx, v[j].first);
            }
            else break;
        }
    }

    // int j = 0;
    // multiset<int> s;
    // int ans = 0;
    // for(int i = 0; i < n; i++) {
    //     j = max(j, i);
    //     while(j < n && (s.empty() || v[j].second >= -(*s.begin()))) {
    //         s.insert(-v[j].first);
    //         j++;
    //     }
    //     ans = max(ans, j - i);
    //     s.erase(-v[i].first);
    // }

    cout << ans;

    return 0;
}
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