Submission #700214

#	Time	Username	Problem	Language	Result	Execution time	Memory
700214		kioto2	K blocks (IZhO14_blocks)	C++14	53 / 100	17 ms	2244 KiB

blocks

#include<bits/stdc++.h>
#define fori(i,a,b) for(int i=a;i<=b;i++)
#define ford(i,a,b) for(int i=a;i>=b;i--)
#define int long long
using namespace std;
const int N=1e5+10;
int a[N],n,k,f[110][110];
signed main()
{
    cin.tie(0)->ios_base::sync_with_stdio(0);
    if(fopen("task.inp","r"))
    {
        freopen("task.inp","r",stdin);
        freopen("task.out","w",stdout);
    }
    cin>>n>>k;
    fori(i,1,n) cin>>a[i];
    memset(f,50,sizeof(f));
    f[0][0]=0;
    fori(i,1,n)
    {
        int val=0;
        ford(j,i,1)
        {
            val=max(val,a[j]);
            fori(t,1,k)
            {
                f[i][t]=min(f[i][t],f[j-1][t-1]+val);
            }
        }
    }
    cout<<f[n][k];
}

Compilation message (stderr)

blocks.cpp: In function 'int main()':
blocks.cpp:13:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |         freopen("task.inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
blocks.cpp:14:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |         freopen("task.out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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