제출 #575925

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
575925		teki	Cloud Computing (CEOI18_clo)	C++11	0 / 100	1 ms	320 KiB

clo

#include <bits/stdc++.h>

typedef long long ll;

#define pb push_back
#define MS(x,y) memset((x),(y),sizeof((x)))
#define MN 1000000007

using namespace std;

int main()
{
    #if LOCAL_DEBUG
        fstream cin("in.txt");
    #endif

    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    int n,x;
    cin>>n>>x;

    int niza[n];
    for (int i = 0; i<n; i++) cin>>niza[i];

    int dp[n], lisPref[n];
    for (int i = 0; i<n; i++) dp[i] = INT_MAX/2;
    int res = 0;

    for (int i = 0; i<n; i++) {
        auto sled = lower_bound(dp,dp+n,niza[i]);
        int j = sled-dp;
        dp[j] = niza[i];
        lisPref[i] = j+1;

        res = max(res,lisPref[i]);
    }

    for (int i = 0; i<n; i++) dp[i] = INT_MAX/2;

    for (int i = n-1; i>=0; i--) {
        auto prev = lower_bound(dp,dp+n,-niza[i]+x);
        int j = prev-dp;

        res = max(res,lisPref[i]+j);

        auto ide = lower_bound(dp,dp+n,-niza[i]);
        int idePos = ide-dp;

        dp[idePos] = -niza[i];
    }

    cout<<res<<endl;

    return 0;
}

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• Subtask 6: 0 / 10