Submission #1077149

#	Time	Username	Problem	Language	Result	Execution time	Memory
1077149		duyhoanho	K blocks (IZhO14_blocks)	C++14	53 / 100	1089 ms	80340 KiB

blocks

#include <bits/stdc++.h>
#define task ""
#define int long long
#define forinc(i,a,b) for(int i=a;i<=b;i++)
using namespace std;
const int N=1e5+10;
int n,a[N],dp[N][102],k;
int32_t main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    if (fopen ("blocks.in", "r"))
    {
        freopen ("blocks.in", "r", stdin);
        freopen ("blocks.out", "w", stdout);
    }
    cin>>n>>k;
    memset(dp,99,sizeof dp);
    int mx=0;
    forinc(i,1,n)
    {
        cin>>a[i];
        mx=max(mx,a[i]);
        dp[i][1] = mx;
        dp[i][0]=0;
    }
    dp[0][0]=0;
    for(int i=2;i<=n;i++)
    {
      for(int j=2;j<=k;j++)
      {
        int mx=a[i];
        for(int tt=i-1;tt>=1;tt--)
        {
          dp[i][j] = min(dp[i][j],dp[tt][j-1] + mx);
          mx=max(mx,a[tt]);

        }
      }
    }
//    forinc(i,1,n)
//    {
//      forinc(j,1,k) cout<<dp[i][j]<<" ";
//      cout<<"\n";
//    }
  cout<<dp[n][k];
}

Compilation message (stderr)

blocks.cpp: In function 'int32_t main()':
blocks.cpp:15:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         freopen ("blocks.in", "r", stdin);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
blocks.cpp:16:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |         freopen ("blocks.out", "w", stdout);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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