제출 #562115

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
562115		zaneyu	K개의 묶음 (IZhO14_blocks)	C++14	100 / 100	215 ms	3236 KiB

blocks

/*input
5 2
1 2 3 4 5
*/
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
//order_of_key #of elements less than x
// find_by_order kth element
typedef long long int ll;

#define ld long double
#define pii pair<int,int>
typedef tree<pii, null_type, less<pii>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
#define f first
#define s second
#define pb push_back
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define FILL(n,x) memset(n,x,sizeof(n))
#define ALL(_a) _a.begin(),_a.end()
#define sz(x) (int)x.size()
const ll maxn=6e5+5;
const ll maxlg=__lg(maxn)+2;
const ll INF64=4e18;
const int MOD=1e9+7;
const int INF=0x3f3f3f3f;
const ld PI=acos(-1);
const ld eps=1e-9;
#define lowb(x) x&(-x)
#define MNTO(x,y) x=min(x,(__typeof__(x))y)
#define MXTO(x,y) x=max(x,(__typeof__(x))y)
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()), c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
#define GET_POS(c,x) (lower_bound(c.begin(),c.end(),x)-c.begin())+1
template<typename T1,typename T2>
ostream& operator<<(ostream& out,pair<T1,T2> P){
    out<<P.f<<' '<<P.s;
    return out;
}
template<typename T>
ostream& operator<<(ostream& out,vector<T> V){
    REP(i,sz(V)) out<<V[i]<<((i!=sz(V)-1)?" ":"");
    return out;
}
ll mult(ll a,ll b){
    if(a<0) a+=MOD;
    return (a*b)%MOD;
}
ll mypow(ll a,ll b){
    if(b<=0) return 1;
    ll res=1LL;
    while(b){
        if(b&1) res=mult(res,a);
        a=mult(a,a);
        b>>=1;
    }
    return res;
}
int arr[maxn];
int dp[maxn],ndp[maxn];
int32_t main(){
    ios::sync_with_stdio(false),cin.tie(0);
    int n,k;
    cin>>n>>k;
    REP(i,n) cin>>arr[i],dp[i]=arr[i];
    REP1(i,n-1) MXTO(dp[i],dp[i-1]);
    REP1(j,k-1){
        vector<pii> v;
        vector<int> pmn;
        v.pb({INF,INF}),pmn.pb(INF);
        REP(i,n){
            int pv=INF;
            while(v.back().f<=arr[i]) MNTO(pv,v.back().s),v.pop_back(),pmn.pop_back();
            ndp[i]=pmn.back();
            if(i) MNTO(pv,dp[i-1]);
            MNTO(ndp[i],pv+arr[i]);
            pmn.pb(min(pmn.back(),pv+arr[i]));
            v.pb({arr[i],pv});
        }
        REP(i,n) dp[i]=ndp[i];
        //REP(i,n) cout<<dp[i]<<' ';
        //cout<<'\n';
    }
    cout<<dp[n-1];

}   

• Subtask 1: 14 / 14
• Subtask 2: 18 / 18
• Subtask 3: 21 / 21
• Subtask 4: 47 / 47