oj.uz

Submission #155536

# Submission time Handle Problem Language Result Execution time Memory
155536 2019-09-29T02:03:52 Z Learner99 K blocks (IZhO14_blocks) C++14
100 / 100
 659 ms 159740 KB 
#include <bits/stdc++.h>

using namespace std;

#define int long long
#define N 100006
int inf =10000000000006;

int dp[N][101];
int ind[N][101];
int pre[N];

int32_t main()
{
    int n, k;
    cin>>n>>k;

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

    a[0] = inf;

    
    

    int cur = 1;
    for(int i=1;i<=n;i++)
    {
        if( a[cur] < a[i])
                cur = i;
        dp[i][1] = a[cur];
        ind[i][1] = cur;
    }

    for(int j=2;j<=k;j++)
    {
        stack < int > s;
        for(int i=j;i<=n;i++)
        {
            dp[i][j] = dp[i-1][j-1] + a[i];
            ind[i][j] = i;

            while(s.size())
            {
                int temp = s.top();
                if( a[temp] < a[i] )
                {
                if(dp[temp][j] - a[ind[temp][j]] + max(a[ind[temp][j]], a[i]) < dp[i][j])
                {
                dp[i][j] = dp[temp][j] - a[ind[temp][j]] + max(a[ind[temp][j]], a[i]);
                if(a[i] < a[ind[temp][j]])
                    ind[i][j] = ind[temp][j];
                }
                    s.pop();
                }
                else
                {
                    break;
                }
            }


            if(s.size())
            {
                int cur = s.top();
                if( dp[i][j] > dp[cur][j])
                {
                    dp[i][j] = dp[cur][j];
                    ind[i][j] = ind[cur][j];
                }
            }
            s.push(i);
        }
    }

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

Subtask #1
14.0 / 14.0

# 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 384 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 504 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 504 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 2 ms 504 KB Output is correct
15 Correct 2 ms 504 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 424 KB Output is correct
18 Correct 2 ms 508 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 348 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 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 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
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 504 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 380 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 2 ms 504 KB Output is correct
14 Correct 2 ms 504 KB Output is correct
15 Correct 3 ms 504 KB Output is correct
16 Correct 3 ms 504 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 504 KB Output is correct

Subtask #4
47.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 16248 KB Output is correct
2 Correct 85 ms 70908 KB Output is correct
3 Correct 86 ms 71004 KB Output is correct
4 Correct 178 ms 71032 KB Output is correct
5 Correct 619 ms 159352 KB Output is correct
6 Correct 206 ms 159340 KB Output is correct
7 Correct 352 ms 159224 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 2 ms 504 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 4 ms 1912 KB Output is correct
13 Correct 4 ms 1912 KB Output is correct
14 Correct 52 ms 16376 KB Output is correct
15 Correct 19 ms 16248 KB Output is correct
16 Correct 30 ms 16248 KB Output is correct
17 Correct 79 ms 70904 KB Output is correct
18 Correct 88 ms 71032 KB Output is correct
19 Correct 192 ms 71032 KB Output is correct
20 Correct 624 ms 159224 KB Output is correct
21 Correct 181 ms 159236 KB Output is correct
22 Correct 400 ms 159364 KB Output is correct
23 Correct 170 ms 159316 KB Output is correct
24 Correct 218 ms 159236 KB Output is correct
25 Correct 659 ms 159224 KB Output is correct
26 Correct 4 ms 1912 KB Output is correct
27 Correct 4 ms 1916 KB Output is correct
28 Correct 48 ms 16248 KB Output is correct
29 Correct 20 ms 16376 KB Output is correct
30 Correct 26 ms 16376 KB Output is correct
31 Correct 78 ms 71004 KB Output is correct
32 Correct 88 ms 71160 KB Output is correct
33 Correct 211 ms 71312 KB Output is correct
34 Correct 607 ms 159688 KB Output is correct
35 Correct 182 ms 159736 KB Output is correct
36 Correct 397 ms 159740 KB Output is correct
37 Correct 22 ms 16248 KB Output is correct
38 Correct 48 ms 16376 KB Output is correct
39 Correct 4 ms 1912 KB Output is correct
40 Correct 4 ms 1912 KB Output is correct
41 Correct 2 ms 380 KB Output is correct
42 Correct 4 ms 376 KB Output is correct