Submission #443860

#	Time	Username	Problem	Language	Result	Execution time	Memory
443860		NintsiChkhaidze	K blocks (IZhO14_blocks)	C++14	53 / 100	1070 ms	4556 KiB

blocks

#include <bits/stdc++.h>
#define pb push_back
#define s second
#define f first
#define ll long long
#define left (node<<1),l,((l+r)>>1)
#define right ((node<<1)|1),((l+r)>>1) + 1,r
using namespace std;
const int N = 100005;
int dp[N][105],a[N],sgt[4*N];
void build(int node,int l,int r){
    if (l == r) {sgt[node] = a[l]; return;}
    build(left),build(right);
    sgt[node] = max(sgt[(node<<1)],sgt[((node<<1)|1)]);
}
int get(int node,int l,int r,int L,int R){
    if (r < L || R < l) return 0;
    if (L <= l && r <= R) return sgt[node];
    int x = get(left,L,R),y = get(right,L,R);
    return max(x,y);
}
main (){
    ios_base::sync_with_stdio(0),cin.tie(NULL),cout.tie(NULL);
    int n,k;
    cin>>n>>k;
    
    for (int i = 1; i <= n; i++)
        cin>>a[i];
    
    build(1,1,n);
    for (int i = 1; i <= n; i++)
        for (int j = 0; j <= k; j++)
            dp[i][j] = 1e9;
            
    for (int i = 1; i <= n; i++){
        for (int j = 1; j < i; j++)
            for (int K = 2; K <= k; K++)
                dp[i][K] = min(dp[i][K],dp[j][K - 1] + get(1,1,n,j + 1,i));
                
        dp[i][1] = get(1,1,n,1,i);
    }
    
    cout<<dp[n][k];
}

Compilation message (stderr)

blocks.cpp:22:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   22 | main (){
      | ^~~~

• Subtask 1: 14 / 14
• Subtask 2: 18 / 18
• Subtask 3: 21 / 21
• Subtask 4: 0 / 47