제출 #538450

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
538450		pokmui9909	Global Warming (CEOI18_glo)	C++17	0 / 100	42 ms	4960 KiB

glo

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
 
ll N, X;
ll A[200005], L[200005], R[200005];
 
int main(){
    cin.tie(0) -> sync_with_stdio(false);
 
    cin >> N >> X;
    for(int i = 0; i < N; i++){
        cin >> A[i];
    }
    vector<ll> dp;
    for(int i = 0; i < N; i++){
        if(dp.empty() || dp.back() < A[i]) dp.push_back(A[i]);
        else *lower_bound(dp.begin(), dp.end(), A[i]) = A[i];
        L[i] = dp.size();
    }
    dp.clear();
    for(int i = N - 1; i >= 0; i--){
        if(dp.empty() || dp.back() < A[i]) dp.push_back(A[i]);
        else *lower_bound(dp.begin(), dp.end(), A[i]) = A[i];
        R[i] = dp.size();
    }
    ll ans = 0;
    for(int i = 0; i < N; i++) ans = max(ans, L[i] + R[i] - 1);
    cout << ans;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 13
• Subtask 4: 0 / 10
• Subtask 5: 0 / 20
• Subtask 6: 0 / 17
• Subtask 7: 0 / 25