oj.uz

Submission #172658

# Submission time Handle Problem Language Result Execution time Memory
172658 2020-01-02T09:43:35 Z Swan K blocks (IZhO14_blocks) C++14
100 / 100
 229 ms 42984 KB 
#include<bits/stdc++.h>
#include <cstdio>
#include <cstring>
#include <stack>
#include <algorithm>
using namespace std;

int dp[105][100005];
int a[100005];
int n,k;

int main(){
    scanf("%d %d",&n,&k);
    int maxv = 0;
    memset(dp,0x3f,sizeof(dp));
    for (int i=1; i<=n; i++) {
        scanf("%d",&a[i]);
        maxv = max(maxv,a[i]);
        dp[1][i] = maxv;
    }
    for (int i=2; i<=k; i++) {
        stack<int> s1,s2;
        for (int j=1; j<=n; j++) {
            //cout << j << ' ' << s1.size() << endl;
            int my_dp = dp[i-1][j-1];
            while (!s1.empty() && s1.top() < a[j]) {
                my_dp = min(my_dp,s2.top());
                s1.pop();
                s2.pop();
            }
            if(s1.empty() || my_dp + a[j] < s1.top() + s2.top()){
                s1.push(a[j]);
                s2.push(my_dp);
            }
            if(j >= i) dp[i][j] = s1.top() + s2.top();
        }
    }
    printf("%d",dp[k][n]);
}
/*
6 2
1 2 3 4 5 6
*/

Compilation message

blocks.cpp: In function 'int main()':
blocks.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&n,&k);
     ~~~~~^~~~~~~~~~~~~~~
blocks.cpp:17:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&a[i]);
         ~~~~~^~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 41464 KB Output is correct
2 Correct 36 ms 41392 KB Output is correct
3 Correct 36 ms 41336 KB Output is correct
4 Correct 36 ms 41464 KB Output is correct
5 Correct 36 ms 41564 KB Output is correct
6 Correct 36 ms 41464 KB Output is correct
7 Correct 36 ms 41464 KB Output is correct
8 Correct 36 ms 41540 KB Output is correct
9 Correct 42 ms 41336 KB Output is correct
10 Correct 36 ms 41336 KB Output is correct
11 Correct 37 ms 41464 KB Output is correct
12 Correct 40 ms 41592 KB Output is correct
13 Correct 42 ms 41448 KB Output is correct
14 Correct 41 ms 41468 KB Output is correct
15 Correct 41 ms 41464 KB Output is correct
16 Correct 42 ms 41464 KB Output is correct
17 Correct 41 ms 41464 KB Output is correct
18 Correct 41 ms 41392 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 41464 KB Output is correct
2 Correct 41 ms 41336 KB Output is correct
3 Correct 41 ms 41464 KB Output is correct
4 Correct 42 ms 41464 KB Output is correct
5 Correct 41 ms 41464 KB Output is correct
6 Correct 36 ms 41336 KB Output is correct
7 Correct 36 ms 41464 KB Output is correct
8 Correct 36 ms 41464 KB Output is correct
9 Correct 41 ms 41464 KB Output is correct
10 Correct 24 ms 41464 KB Output is correct
11 Correct 36 ms 41464 KB Output is correct
12 Correct 36 ms 41464 KB Output is correct
13 Correct 36 ms 41476 KB Output is correct
14 Correct 36 ms 41464 KB Output is correct
15 Correct 36 ms 41464 KB Output is correct
16 Correct 41 ms 41464 KB Output is correct
17 Correct 36 ms 41468 KB Output is correct
18 Correct 36 ms 41464 KB Output is correct
19 Correct 36 ms 41464 KB Output is correct
20 Correct 36 ms 41468 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 41464 KB Output is correct
2 Correct 36 ms 41464 KB Output is correct
3 Correct 36 ms 41536 KB Output is correct
4 Correct 36 ms 41464 KB Output is correct
5 Correct 36 ms 41464 KB Output is correct
6 Correct 36 ms 41464 KB Output is correct
7 Correct 36 ms 41464 KB Output is correct
8 Correct 36 ms 41464 KB Output is correct
9 Correct 36 ms 41340 KB Output is correct
10 Correct 36 ms 41464 KB Output is correct
11 Correct 36 ms 41412 KB Output is correct
12 Correct 36 ms 41464 KB Output is correct
13 Correct 38 ms 41464 KB Output is correct
14 Correct 36 ms 41400 KB Output is correct
15 Correct 36 ms 41464 KB Output is correct
16 Correct 36 ms 41464 KB Output is correct
17 Correct 38 ms 41464 KB Output is correct
18 Correct 38 ms 41548 KB Output is correct
19 Correct 37 ms 41464 KB Output is correct

Subtask #4
47.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 40 ms 41464 KB Output is correct
2 Correct 42 ms 41932 KB Output is correct
3 Correct 45 ms 41880 KB Output is correct
4 Correct 76 ms 41916 KB Output is correct
5 Correct 162 ms 42488 KB Output is correct
6 Correct 52 ms 42488 KB Output is correct
7 Correct 96 ms 42488 KB Output is correct
8 Correct 37 ms 41464 KB Output is correct
9 Correct 37 ms 41468 KB Output is correct
10 Correct 36 ms 41464 KB Output is correct
11 Correct 36 ms 41468 KB Output is correct
12 Correct 36 ms 41464 KB Output is correct
13 Correct 36 ms 41468 KB Output is correct
14 Correct 49 ms 41668 KB Output is correct
15 Correct 38 ms 41592 KB Output is correct
16 Correct 40 ms 41592 KB Output is correct
17 Correct 43 ms 41848 KB Output is correct
18 Correct 46 ms 41848 KB Output is correct
19 Correct 77 ms 41820 KB Output is correct
20 Correct 144 ms 42488 KB Output is correct
21 Correct 56 ms 42488 KB Output is correct
22 Correct 95 ms 42488 KB Output is correct
23 Correct 52 ms 42488 KB Output is correct
24 Correct 60 ms 42488 KB Output is correct
25 Correct 153 ms 42532 KB Output is correct
26 Correct 37 ms 41464 KB Output is correct
27 Correct 37 ms 41464 KB Output is correct
28 Correct 54 ms 41592 KB Output is correct
29 Correct 38 ms 41592 KB Output is correct
30 Correct 42 ms 41720 KB Output is correct
31 Correct 42 ms 41848 KB Output is correct
32 Correct 47 ms 42080 KB Output is correct
33 Correct 100 ms 42104 KB Output is correct
34 Correct 229 ms 42976 KB Output is correct
35 Correct 54 ms 42744 KB Output is correct
36 Correct 127 ms 42984 KB Output is correct
37 Correct 39 ms 41592 KB Output is correct
38 Correct 48 ms 41492 KB Output is correct
39 Correct 37 ms 41464 KB Output is correct
40 Correct 36 ms 41464 KB Output is correct
41 Correct 36 ms 41464 KB Output is correct
42 Correct 37 ms 41464 KB Output is correct