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 INF=1e9;
vector<int> v;
struct sparse_table{
vector<vector<int>> sp;
int k=20;
sparse_table(){}
void build(int n){
sp.resize(k,vector<int>(n+1));
for(int i=0;i<n;i++){
sp[0][i]=v[i];
}
for(int i=1;i<k;i++){
for(int j=0;j+(1<<i)<=n;j++){
sp[i][j]=max(sp[i-1][j],sp[i-1][j+(1<<(i-1))]);
}
}
}
int ask(int a,int b){
if(a>=b){
while(1){
}
}
int p=b-a;
int t=__lg(p);
return max(sp[t][a],sp[t][b-(1<<t)]);
}
};
int main(){
//ios_base::sync_with_stdio(0);
//cin.tie(0);
int n,k;cin>>n>>k;
v.resize(n+1);
for(int i=1;i<=n;i++){
cin>>v[i];
}
sparse_table sp;
sp.build(n+1);
vector<vector<int>> dp(k+1,vector<int>(n+1,INF)),dp1(k+1,vector<int>(n+1,-1));
dp[0][0]=0;
for(int i=1;i<=k;i++){
for(int j=i;j<=n;j++){
for(int k1=j-1;k1>=0;k1--){
if(dp[i-1][k1]+sp.ask(k1+1,j+1)<dp[i][j]){
dp[i][j]=dp[i-1][k1]+sp.ask(k1+1,j+1);
dp1[i][j]=k1;
}
}
}
}
/*for(int i=0;i<=k;i++){
for(int j=1;j<=n;j++){
cout<<dp[i][j]<<' ';
}
cout<<endl;
}
for(int i=0;i<=k;i++){
for(int j=1;j<=n;j++){
cout<<dp1[i][j]<<' ';
}
cout<<endl;
}*/
cout<<dp[k][n]<<endl;
return 0;
}
/*
10 4
1 6 4 7 8 3 9 2 8 5
*/
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