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Submission #1078680

# Submission time Handle Problem Language Result Execution time Memory
1078680 2024-08-28T04:23:42 Z Tony_Tung K blocks (IZhO14_blocks) C++14
53 / 100
 883 ms 4668 KB 
#include <bits/stdc++.h>
#define task "blocks"
using namespace std;

const int N = 1e5 + 5, K = 1e2 + 5, INF = 2e9;
int a[N], dp[N][K], n, k;
stack<int> st;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    if (fopen(task".in", "r"))
    {
        freopen(task".in", "r", stdin);
        freopen(task".out", "w", stdout);
    }

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

    for (int i = 1; i <= n; i++)
    {
        cin >> a[i];
        dp[i][1] = i == 1 ? a[i] : max(a[i], dp[i-1][1]);
    }

    for (int j = 2; j <= n; j++)
    {
        while (st.size()) st.pop();
        for (int i = 1; i <= n; i++)
        {
            while (st.size() && a[i] >= a[st.top()])
            {
                dp[i][j] = min(dp[i][j], min(dp[st.top()][j-1] + a[i], dp[st.top()][j] - a[st.top()] + a[i]));
                st.pop();
            }
            if (st.size())
                dp[i][j] = min(dp[i][j], min(dp[st.top()][j-1] + a[i], dp[st.top()][j]));
            st.push(i);
        }
    }
    cout << dp[n][k];

    return 0;
}

Compilation message

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

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 464 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 436 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 352 KB Output is correct
14 Correct 0 ms 352 KB Output is correct
15 Correct 0 ms 352 KB Output is correct
16 Correct 0 ms 352 KB Output is correct
17 Correct 0 ms 480 KB Output is correct
18 Correct 0 ms 352 KB Output is correct
19 Correct 0 ms 352 KB Output is correct
20 Correct 0 ms 352 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 464 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 436 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 352 KB Output is correct
32 Correct 0 ms 352 KB Output is correct
33 Correct 0 ms 352 KB Output is correct
34 Correct 0 ms 352 KB Output is correct
35 Correct 0 ms 480 KB Output is correct
36 Correct 0 ms 352 KB Output is correct
37 Correct 0 ms 352 KB Output is correct
38 Correct 0 ms 352 KB Output is correct
39 Correct 1 ms 352 KB Output is correct
40 Correct 0 ms 352 KB Output is correct
41 Correct 1 ms 352 KB Output is correct
42 Correct 0 ms 360 KB Output is correct
43 Correct 1 ms 360 KB Output is correct
44 Correct 0 ms 360 KB Output is correct
45 Correct 0 ms 360 KB Output is correct
46 Correct 0 ms 360 KB Output is correct
47 Correct 0 ms 612 KB Output is correct
48 Correct 0 ms 360 KB Output is correct
49 Correct 0 ms 360 KB Output is correct
50 Correct 0 ms 360 KB Output is correct
51 Correct 0 ms 360 KB Output is correct
52 Correct 0 ms 360 KB Output is correct
53 Correct 0 ms 360 KB Output is correct
54 Correct 1 ms 360 KB Output is correct
55 Correct 0 ms 360 KB Output is correct
56 Correct 0 ms 360 KB Output is correct
57 Correct 1 ms 360 KB Output is correct

Subtask #4
0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 464 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 436 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 352 KB Output is correct
32 Correct 0 ms 352 KB Output is correct
33 Correct 0 ms 352 KB Output is correct
34 Correct 0 ms 352 KB Output is correct
35 Correct 0 ms 480 KB Output is correct
36 Correct 0 ms 352 KB Output is correct
37 Correct 0 ms 352 KB Output is correct
38 Correct 0 ms 352 KB Output is correct
39 Correct 1 ms 352 KB Output is correct
40 Correct 0 ms 352 KB Output is correct
41 Correct 1 ms 352 KB Output is correct
42 Correct 0 ms 360 KB Output is correct
43 Correct 1 ms 360 KB Output is correct
44 Correct 0 ms 360 KB Output is correct
45 Correct 0 ms 360 KB Output is correct
46 Correct 0 ms 360 KB Output is correct
47 Correct 0 ms 612 KB Output is correct
48 Correct 0 ms 360 KB Output is correct
49 Correct 0 ms 360 KB Output is correct
50 Correct 0 ms 360 KB Output is correct
51 Correct 0 ms 360 KB Output is correct
52 Correct 0 ms 360 KB Output is correct
53 Correct 0 ms 360 KB Output is correct
54 Correct 1 ms 360 KB Output is correct
55 Correct 0 ms 360 KB Output is correct
56 Correct 0 ms 360 KB Output is correct
57 Correct 1 ms 360 KB Output is correct
58 Incorrect 883 ms 4668 KB Output isn't correct
59 Halted 0 ms 0 KB -