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Submission #701153

# Submission time Handle Problem Language Result Execution time Memory
701153 2023-02-20T08:54:47 Z sugartheanh K blocks (IZhO14_blocks) C++14
0 / 100
 72 ms 164852 KB 
#include <bits/stdc++.h>
#define ll long long
#define fo(i,a,b) for(int i=a;i<=b;++i)
#define fod(i,a,b) for(int i=a;i>=b;--i)
#define ii pair<ll,ll>
#define iii pair<ll,ii>
#define fi first
#define se second
#define oo 1e18
#define bit(x,i) (((x)>>(i))&1)
using namespace std;
const int MOD = 1e9 + 7;
const int N = 1e5 + 5;
const int K = 1e2 + 5;
int n,k,a[N];
ll dp[K][N],f[K][N],L[N];
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin>>n>>k;
    fo(i,1,n)
        cin>>a[i];
    memset(dp,0x3f,sizeof(dp));
    memset(f,0x3f,sizeof(f));
    dp[0][0] = 0;
    fo(i,1,k)
    {
        int mx = 0;
        fo(j,1,n)
        {
            mx = max(mx, a[j]);
            if(i == 1)
                dp[i][j] = f[i][j] = mx;
            L[j] = j-1;
            while(L[j] > 0 && a[L[j]] <= a[j])
            {
                f[i][L[L[j]]] = min(f[i-1][L[L[j]]], f[i-1][L[j]]);
                L[j] = L[L[j]];
            }
            if(i <= j)
            {
                dp[i][j] = min({dp[i][j], dp[i][L[j]], f[i-1][L[j]] + a[j]});
                f[i][j] = dp[i][j];
            }
        }

    }
    cout<<dp[k][n];
}

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 164684 KB Output is correct
2 Correct 59 ms 164584 KB Output is correct
3 Correct 58 ms 164592 KB Output is correct
4 Incorrect 72 ms 164636 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 164852 KB Output is correct
2 Correct 63 ms 164592 KB Output is correct
3 Correct 63 ms 164672 KB Output is correct
4 Incorrect 57 ms 164624 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 164684 KB Output is correct
2 Correct 59 ms 164584 KB Output is correct
3 Correct 58 ms 164592 KB Output is correct
4 Incorrect 72 ms 164636 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 164684 KB Output is correct
2 Correct 59 ms 164584 KB Output is correct
3 Correct 58 ms 164592 KB Output is correct
4 Incorrect 72 ms 164636 KB Output isn't correct
5 Halted 0 ms 0 KB -