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Submission #88641

# Submission time Handle Problem Language Result Execution time Memory
88641 2018-12-07T08:24:21 Z ABCD K blocks (IZhO14_blocks) C++14
100 / 100
 234 ms 51196 KB 
#include <bits/stdc++.h>
using namespace std;

const int N=1e5+5;
const int K=1e2+5;

typedef pair<int,int> ii;

int n,k;
int a[N];
int f[K][N];

void dp(){
    memset(f,0x3f,sizeof(f));
    f[1][0]=0;
    for(int i=1;i<=n;i++) f[1][i]=max(f[1][i-1],a[i]);
    for(int i=2;i<=k;i++){
        stack<ii> st;
        for(int j=i;j<=n;j++){
            int tmp=f[i-1][j-1];
            while(st.size()&&a[st.top().first]<=a[j]){
                tmp=min(tmp,st.top().second);
                st.pop();
            }
            int p=st.size()?st.top().first:0;
            f[i][j]=min(f[i][p],tmp+a[j]);
            st.push({j,tmp});
        }
    }
    cout<<f[k][n];
}

main(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    cin>>n>>k;
    for(int i=1;i<=n;i++) cin>>a[i];
    dp();
}

Compilation message

blocks.cpp:33:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 41464 KB Output is correct
2 Correct 34 ms 41564 KB Output is correct
3 Correct 34 ms 41636 KB Output is correct
4 Correct 34 ms 41636 KB Output is correct
5 Correct 33 ms 41636 KB Output is correct
6 Correct 33 ms 41636 KB Output is correct
7 Correct 33 ms 41636 KB Output is correct
8 Correct 34 ms 41756 KB Output is correct
9 Correct 33 ms 41756 KB Output is correct
10 Correct 34 ms 41756 KB Output is correct
11 Correct 33 ms 41756 KB Output is correct
12 Correct 34 ms 41756 KB Output is correct
13 Correct 33 ms 41756 KB Output is correct
14 Correct 34 ms 41756 KB Output is correct
15 Correct 35 ms 41756 KB Output is correct
16 Correct 34 ms 41756 KB Output is correct
17 Correct 38 ms 41756 KB Output is correct
18 Correct 37 ms 41756 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 41756 KB Output is correct
2 Correct 37 ms 41756 KB Output is correct
3 Correct 37 ms 41756 KB Output is correct
4 Correct 35 ms 41756 KB Output is correct
5 Correct 38 ms 41756 KB Output is correct
6 Correct 36 ms 41756 KB Output is correct
7 Correct 38 ms 41756 KB Output is correct
8 Correct 35 ms 41756 KB Output is correct
9 Correct 37 ms 41756 KB Output is correct
10 Correct 35 ms 41756 KB Output is correct
11 Correct 34 ms 41756 KB Output is correct
12 Correct 27 ms 41756 KB Output is correct
13 Correct 34 ms 41756 KB Output is correct
14 Correct 33 ms 41756 KB Output is correct
15 Correct 34 ms 41756 KB Output is correct
16 Correct 34 ms 41756 KB Output is correct
17 Correct 34 ms 41756 KB Output is correct
18 Correct 35 ms 41756 KB Output is correct
19 Correct 33 ms 41756 KB Output is correct
20 Correct 33 ms 41756 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 41756 KB Output is correct
2 Correct 35 ms 41756 KB Output is correct
3 Correct 33 ms 41756 KB Output is correct
4 Correct 33 ms 41756 KB Output is correct
5 Correct 33 ms 41756 KB Output is correct
6 Correct 34 ms 41756 KB Output is correct
7 Correct 33 ms 41756 KB Output is correct
8 Correct 33 ms 41756 KB Output is correct
9 Correct 34 ms 41756 KB Output is correct
10 Correct 33 ms 41884 KB Output is correct
11 Correct 34 ms 41884 KB Output is correct
12 Correct 34 ms 41884 KB Output is correct
13 Correct 35 ms 41884 KB Output is correct
14 Correct 37 ms 41884 KB Output is correct
15 Correct 35 ms 41884 KB Output is correct
16 Correct 35 ms 41884 KB Output is correct
17 Correct 34 ms 41884 KB Output is correct
18 Correct 34 ms 41916 KB Output is correct
19 Correct 34 ms 41916 KB Output is correct

Subtask #4
47.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 41916 KB Output is correct
2 Correct 39 ms 41984 KB Output is correct
3 Correct 43 ms 41984 KB Output is correct
4 Correct 89 ms 41984 KB Output is correct
5 Correct 197 ms 42332 KB Output is correct
6 Correct 48 ms 42332 KB Output is correct
7 Correct 112 ms 42332 KB Output is correct
8 Correct 34 ms 42332 KB Output is correct
9 Correct 38 ms 42332 KB Output is correct
10 Correct 37 ms 42332 KB Output is correct
11 Correct 37 ms 42332 KB Output is correct
12 Correct 37 ms 42332 KB Output is correct
13 Correct 38 ms 42332 KB Output is correct
14 Correct 56 ms 42332 KB Output is correct
15 Correct 35 ms 42332 KB Output is correct
16 Correct 42 ms 42332 KB Output is correct
17 Correct 38 ms 42536 KB Output is correct
18 Correct 44 ms 42964 KB Output is correct
19 Correct 103 ms 43280 KB Output is correct
20 Correct 234 ms 44204 KB Output is correct
21 Correct 52 ms 44772 KB Output is correct
22 Correct 129 ms 45604 KB Output is correct
23 Correct 44 ms 46120 KB Output is correct
24 Correct 63 ms 46808 KB Output is correct
25 Correct 233 ms 47564 KB Output is correct
26 Correct 33 ms 47564 KB Output is correct
27 Correct 33 ms 47564 KB Output is correct
28 Correct 50 ms 47564 KB Output is correct
29 Correct 34 ms 47564 KB Output is correct
30 Correct 38 ms 47564 KB Output is correct
31 Correct 42 ms 47768 KB Output is correct
32 Correct 44 ms 48320 KB Output is correct
33 Correct 98 ms 48624 KB Output is correct
34 Correct 216 ms 49800 KB Output is correct
35 Correct 48 ms 50376 KB Output is correct
36 Correct 125 ms 51196 KB Output is correct
37 Correct 39 ms 51196 KB Output is correct
38 Correct 52 ms 51196 KB Output is correct
39 Correct 37 ms 51196 KB Output is correct
40 Correct 36 ms 51196 KB Output is correct
41 Correct 33 ms 51196 KB Output is correct
42 Correct 33 ms 51196 KB Output is correct