제출 #758336

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
758336		Unforgettablepl	학생 (COCI14_studentsko)	C++17	20 / 100	2 ms	356 KiB

studentsko

/*
ID: samikgo1
TASK:
LANG: C++
*/
#include <bits/stdc++.h>
using namespace std;
typedef unsigned long long ll;
typedef pair<ll,ll> pll;
#define all(x) x.begin(),x.end()
#define allr(x) x.rbegin(),x.rend()
#define f first
#define s second
//#define x first
//#define y second
const int INF = INT32_MAX;
const ll modulo = 1e4;
//#define int ll
int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
//    freopen("input.in","r",stdin);
//    freopen("haybales.out","w",stdout);
    int n,k;
    cin >> n >> k;
    vector<int> arr(n);
    for(int&i:arr)cin>>i;
    vector<int> arrsort = arr;
    sort(all(arrsort));
    for(int&i:arr) {
        int index = lower_bound(all(arrsort),i)-arrsort.begin()+1;
        if(index%k)index = index/k +1;
        else index /= k;
        i = index;
    }
    vector<int> lis;
    for(int&i:arr){
        if(lis.empty()){lis.emplace_back(i);continue;}
        if(i>=lis.back()){lis.emplace_back(i);continue;}
        *lower_bound(all(lis),i) = i;
    }
    cout << n-lis.size();
}

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