이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
using namespace std;
const int MN=5002;
typedef pair<int,int> pii;
int N,K,grp[MN];
pii a[MN];
vector<int> dp;
int main() {
ios::sync_with_stdio(0);cin.tie(0);
cin>>N>>K;
for(int i=0;i<N;i++) {
cin>>a[i].first;
a[i].second=i;
}
sort(a,a+N);
for(int i=0;i<N;i++)
grp[a[i].second]=i/K;
for(int i=0;i<N;i++) {
if(dp.empty()||grp[i]>=dp.back()) dp.push_back(grp[i]);
else *(upper_bound(dp.begin(),dp.end(),grp[i]))=grp[i];
}
cout<<N-(int)dp.size()<<'\n';
return 0;
}
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