Submission #1090814

#	Time	Username	Problem	Language	Result	Execution time	Memory
1090814		nguyennh	K blocks (IZhO14_blocks)	C++14	53 / 100	1072 ms	4956 KiB

blocks

#include<bits/stdc++.h>
#define el '\n'
using namespace std ;
 
const int MN = 1e5 + 5;
const int64_t inf = 1e18;
 
int64_t a[MN];
 
int32_t main (){
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int n , k;
  cin >> n >> k;
  for ( int i = 1 ; i <= n ; i++ ) cin >> a[i];
  vector<vector<int64_t>> dp(n + 5 , vector<int64_t>(k + 5 , inf));
  dp[0][0] = 0;
  for ( int i = 1 ; i <= n ; i++ ){
    int64_t mx = 0;
    // for ( int j = i ; j >= 1 ; j-- ){
    //   mx = max(mx , a[j]);
    //   for ( int l = 0 ; l <= k ; l++ ){
    //     dp[i][l + 1] = min(dp[i][l + 1] , dp[j - 1][l] + mx);
    //   }
    // }
    int pos = 1;
    for (int j = i ; j >= 1 ; j--){
      if (a[j] > a[i]){
        pos = j;
        break;
      }
    }
    for (int j = i ; j >= 1 ; j--){
      mx = max(mx , a[j]);
      for (int l = 0 ; l <= k ; l++){
        dp[i][l + 1] = min(dp[i][l + 1] , dp[j - 1][l] + mx);
      }
    }
  }
  cout << dp[n][k];
}

Compilation message (stderr)

blocks.cpp: In function 'int32_t main()':
blocks.cpp:26:9: warning: variable 'pos' set but not used [-Wunused-but-set-variable]
   26 |     int pos = 1;
      |         ^~~

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