oj.uz

Submission #172391

# Submission time Handle Problem Language Result Execution time Memory
172391 2020-01-01T12:57:53 Z vex K blocks (IZhO14_blocks) C++14
100 / 100
 536 ms 43916 KB 
#include<bits/stdc++.h>
#define maxn 100005
#define INF (int)(1e9 + 77)
using namespace std;

int n,k;
int a[maxn];
int dp[maxn][102];
int lv[maxn];

int queries[maxn];
int ans[maxn];
int minn[maxn][22];
int niz[maxn];


stack<int>mss;
int p[maxn];
int par(int v)
{
    if(v==p[v])return v;
    return p[v] = par(p[v]);
}
void build(int ind)
{
    for(int i=0;i<=n;i++)
    {
        p[i] = -1;
        niz[i] = dp[i][ind];
    }
    while(!mss.empty())mss.pop();

    /*cout<<endl<<endl;
    cout<<ind<<endl;
    for(int i=0;i<=n;i++)
    {
        cout<<niz[i]<<" ";
    }
    cout<<endl;*/

    for(int i=0;i<n;i++)
    {
        while(!mss.empty())
        {
            int vrh = mss.top();
            if(niz[vrh] > niz[i])
            {
                p[vrh] = i;
                mss.pop();
            }
            else break;
        }
        mss.push(i);
        p[i] = i;

        ans[i] = niz[par(queries[i])];
        //cout<<queries[i]<<","<<i<<","<<ans[i]<<endl;
    }
}

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.tie(nullptr);

	cin>>n>>k;
	for(int i=1;i<=n;i++)cin>>a[i];

	stack<int>ms;
	ms.push(0);
	a[0]=INF;
	for(int i=1;i<=n;i++)
	{
		while(!ms.empty())
		{
			int vrh=ms.top();
			if(a[vrh]<=a[i])
			{
				ms.pop();
			}
			else break;
		}


		lv[i]=ms.top();
		queries[i-1] = lv[i];
		ms.push(i);
	}

	//for(int i=1;i<=n;i++)cout<<lv[i]<<" ";cout<<endl;

	for(int i=0;i<=n;i++)
		for(int j=0;j<=k;j++)dp[i][j]=INF;
	dp[0][0]=0;

	for(int i=1;i<=n;i++)dp[i][0]=INF;
	for(int j=1;j<=k;j++)
	{
		build(j-1);
		for(int i=1;i<=n;i++)
		{
			dp[i][j]=min( dp[ lv[i] ][j], ans[i-1] + a[i]);
		}
	}

	cout<<dp[n][k];
	return 0;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 396 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 476 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 380 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 432 KB Output is correct
10 Correct 2 ms 476 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 380 KB Output is correct
20 Correct 2 ms 376 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 4 ms 356 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 4 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct

Subtask #4
47.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 4572 KB Output is correct
2 Correct 23 ms 19612 KB Output is correct
3 Correct 32 ms 19576 KB Output is correct
4 Correct 131 ms 19700 KB Output is correct
5 Correct 413 ms 43916 KB Output is correct
6 Correct 56 ms 43716 KB Output is correct
7 Correct 205 ms 43900 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 3 ms 888 KB Output is correct
13 Correct 3 ms 760 KB Output is correct
14 Correct 45 ms 4728 KB Output is correct
15 Correct 7 ms 4720 KB Output is correct
16 Correct 15 ms 4840 KB Output is correct
17 Correct 23 ms 19576 KB Output is correct
18 Correct 30 ms 19584 KB Output is correct
19 Correct 150 ms 19704 KB Output is correct
20 Correct 454 ms 43716 KB Output is correct
21 Correct 55 ms 43716 KB Output is correct
22 Correct 227 ms 43720 KB Output is correct
23 Correct 52 ms 43640 KB Output is correct
24 Correct 87 ms 43768 KB Output is correct
25 Correct 461 ms 43716 KB Output is correct
26 Correct 2 ms 760 KB Output is correct
27 Correct 3 ms 760 KB Output is correct
28 Correct 39 ms 4728 KB Output is correct
29 Correct 7 ms 4728 KB Output is correct
30 Correct 15 ms 4728 KB Output is correct
31 Correct 23 ms 19704 KB Output is correct
32 Correct 32 ms 19708 KB Output is correct
33 Correct 149 ms 19764 KB Output is correct
34 Correct 536 ms 43896 KB Output is correct
35 Correct 56 ms 43896 KB Output is correct
36 Correct 355 ms 43872 KB Output is correct
37 Correct 7 ms 4728 KB Output is correct
38 Correct 38 ms 4728 KB Output is correct
39 Correct 3 ms 760 KB Output is correct
40 Correct 2 ms 764 KB Output is correct
41 Correct 2 ms 376 KB Output is correct
42 Correct 2 ms 376 KB Output is correct