제출 #1263133

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1263133		sohamsen15	지구 온난화 (NOI13_gw)	C++20	6 / 40	484 ms	8260 KiB

gw

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

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    ll n, lo = 0, hi = 2e18, best = 0; cin >> n;
    vector<ll> a(n); for (auto &x: a) cin >> x;
    function<ll(ll)> f = [&](ll h) {
        bool curr = false; ll ans = 0;
        for (ll i = 0; i < n; i++) {
            if (a[i] > h) {
                if (!curr) ans++, curr = true;
            } else curr = false;
        }
        return ans;
    };
    
    while (hi - lo > 3) {
        ll m1 = lo + (hi - lo) / 3;
        ll m2 = hi - (hi - lo) / 3;
        if (f(m1) < f(m2)) lo = m1 + 1;
        else hi = m2 - 1;
    }

    for (ll h = lo; h <= hi; h++) best = max(best, f(h));
    cout << best << "\n";
}

• Subtask 1: 0 / 6
• Subtask 2: 6 / 6
• Subtask 3: 0 / 7
• Subtask 4: 0 / 10
• Subtask 5: 0 / 11