제출 #1310098

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1310098		qrn	Global Warming (CEOI18_glo)	C++20	100 / 100	45 ms	8272 KiB

glo

#include "bits/stdc++.h"
using namespace std;
#define intt long long
#define fi first
#define se second
#define endl "\n"

const intt mxN = 2e5+67;
const intt LG = 20;
const intt inf = 1e18; 
const intt mod = 1e9 + 7;
const intt p = 997;

vector<intt> a(mxN), sol(mxN, inf), sag(mxN, inf), dpL(mxN), dpR(mxN);
map<intt,intt> comp;
set<intt> st;
intt avil = 1;


void smile() {
    intt n, k;
    cin >> n >> k;
    for(intt i = 0; i < n; i++) {
        cin >> a[i];
    }
    sol.assign(n + 1, inf);
    sag.assign(n + 1, inf);
    for(intt i = 0; i < n; i++) {
        intt ind = lower_bound(sol.begin(), sol.end(), a[i]) - sol.begin();
        sol[ind] = a[i];
        dpL[i] = ind + 1;
    }
    for(intt i = n - 1; i >= 0; i--) {
        intt cnt = lower_bound(sag.begin(), sag.end(), -1 * (a[i] - k)) - sag.begin();
        dpR[i] = cnt + 1;
        intt ind = lower_bound(sag.begin(), sag.end(), -1 * a[i]) - sag.begin();
        sag[ind] = -1 * a[i];
    }
    intt ans = 0;
    for(intt i = 0; i < n; i++) {
        ans = max(ans, dpL[i] + dpR[i] - 1);
    }
    cout << ans << endl;
}
//ome47
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); 
    cout.tie(NULL);

    // freopen("island.in", "r", stdin);
    // freopen("island.out", "w", stdout)

    intt t = 1, buu = 1;
    // cin >> t;
    while(t--){
        // cout << endl;
        // cout << "Case #" << buu++ << ": ";
        smile();
    }
}

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