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Submission #1099459

# Submission time Handle Problem Language Result Execution time Memory
1099459 2024-10-11T10:16:06 Z alexander707070 Tortoise (CEOI21_tortoise) C++14
48 / 100
 3000 ms 255124 KB 
#include<bits/stdc++.h>
#define MAXN 5007
using namespace std;

int n,a[MAXN];
int dist[MAXN],last,sum,nxt[MAXN];

int dp[2][2*MAXN][2];

int ff(int pos,int tim,int c){
    if(tim>2*n or pos>n)return 0;
    return dp[pos%2][tim][c];
}

struct Fenwick{
    int fenwick[MAXN];

    void update(int x,int val){
        while(x<=n){
            fenwick[x]=max(fenwick[x],val);
            x+=(x & (-x));
        }
    }

    int getmax(int x){
        int res=0;
        while(x>=1){
            res=max(res,fenwick[x]);
            x-=(x & (-x));
        }
        return res;
    }
};

Fenwick fen[3*MAXN];

void calcdp(){
    for(int pos=n;pos>=1;pos--){
        for(int tim=2*n;tim>=0;tim--){

            if(tim<pos-1)continue;

            for(int c=1;c>=0;c--){

                dp[pos%2][tim][c]=0;
                
                if(c==1){
                    if(nxt[pos]==2*n)dp[pos%2][tim][c]=0;
                    else{
                        if(tim+2*nxt[pos]-pos>3*n)dp[pos%2][tim][c]=1;
                        else dp[pos%2][tim][c]=fen[tim+2*nxt[pos]-pos].getmax(nxt[pos])+1;
                    }
                }else{
                    if(a[pos]>0){
                        if(tim<=2*(pos-1))dp[pos%2][tim][c]=max(dp[pos%2][tim][c],ff(pos,tim,1));

                        for(int s=0;tim+s*2*dist[pos]<=2*(pos-1) and s+1<=a[pos];s++){
                            dp[pos%2][tim][c]=max(dp[pos%2][tim][c],ff(pos+1,tim+(s+1)*2*dist[pos]+1,0)+s+1);

                            if(s+1<a[pos] and tim+2*(s+1)*dist[pos]<=2*(pos-1))dp[pos%2][tim][c]=max(dp[pos%2][tim][c], ff(pos,tim+(s+1)*2*dist[pos],1)+s+1);
                        }
                    }

                    if(pos<n)dp[pos%2][tim][c]=max(dp[pos%2][tim][c],ff(pos+1,tim+1,c));
                }
            }
        }

        for(int tim=2*n;tim>=0;tim--){
            fen[pos+tim].update(pos,dp[pos%2][tim][0]);
        }
    }
}

int main(){

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

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

        if(a[i]>=0)sum+=a[i];
    }

    last=-n;
    for(int i=1;i<=n;i++){
        if(a[i]==-1)last=i;
        dist[i]=min(dist[i],i-last);
    }

    last=2*n;
    for(int i=n;i>=1;i--){
        if(a[i]==-1)last=i;
        dist[i]=min(dist[i],last-i);
        
        nxt[i]=last;
    }

    calcdp();
    cout<<sum-dp[1][0][0]<<"\n";
 
	return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 676 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 672 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 0 ms 604 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 676 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 672 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 0 ms 604 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 4 ms 3932 KB Output is correct
28 Correct 5 ms 4700 KB Output is correct
29 Correct 4 ms 4524 KB Output is correct
30 Correct 4 ms 3932 KB Output is correct
31 Correct 5 ms 4700 KB Output is correct
32 Correct 2 ms 3420 KB Output is correct
33 Correct 4 ms 4444 KB Output is correct
34 Correct 3 ms 3932 KB Output is correct
35 Correct 5 ms 4956 KB Output is correct
36 Correct 5 ms 4952 KB Output is correct
37 Correct 6 ms 4956 KB Output is correct
38 Correct 5 ms 4756 KB Output is correct
39 Correct 5 ms 4952 KB Output is correct
40 Correct 5 ms 4700 KB Output is correct
41 Correct 4 ms 4956 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 676 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 672 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 0 ms 604 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 4 ms 3932 KB Output is correct
28 Correct 5 ms 4700 KB Output is correct
29 Correct 4 ms 4524 KB Output is correct
30 Correct 4 ms 3932 KB Output is correct
31 Correct 5 ms 4700 KB Output is correct
32 Correct 2 ms 3420 KB Output is correct
33 Correct 4 ms 4444 KB Output is correct
34 Correct 3 ms 3932 KB Output is correct
35 Correct 5 ms 4956 KB Output is correct
36 Correct 5 ms 4952 KB Output is correct
37 Correct 6 ms 4956 KB Output is correct
38 Correct 5 ms 4756 KB Output is correct
39 Correct 5 ms 4952 KB Output is correct
40 Correct 5 ms 4700 KB Output is correct
41 Correct 4 ms 4956 KB Output is correct
42 Correct 3 ms 3160 KB Output is correct
43 Correct 2 ms 3164 KB Output is correct
44 Correct 3 ms 3676 KB Output is correct
45 Correct 7 ms 4620 KB Output is correct
46 Correct 3 ms 3676 KB Output is correct
47 Correct 3 ms 3160 KB Output is correct
48 Correct 4 ms 4188 KB Output is correct
49 Correct 3 ms 3676 KB Output is correct
50 Correct 6 ms 4440 KB Output is correct
51 Correct 10 ms 4696 KB Output is correct
52 Correct 3 ms 3420 KB Output is correct
53 Correct 5 ms 4444 KB Output is correct
54 Correct 5 ms 4440 KB Output is correct
55 Correct 4 ms 3928 KB Output is correct
56 Correct 5 ms 4700 KB Output is correct
57 Correct 3 ms 3164 KB Output is correct
58 Correct 5 ms 4584 KB Output is correct
59 Correct 3 ms 3416 KB Output is correct
60 Correct 4 ms 4188 KB Output is correct
61 Correct 4 ms 4444 KB Output is correct
62 Correct 4 ms 4444 KB Output is correct

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 676 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 672 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 0 ms 604 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 4 ms 3932 KB Output is correct
28 Correct 5 ms 4700 KB Output is correct
29 Correct 4 ms 4524 KB Output is correct
30 Correct 4 ms 3932 KB Output is correct
31 Correct 5 ms 4700 KB Output is correct
32 Correct 2 ms 3420 KB Output is correct
33 Correct 4 ms 4444 KB Output is correct
34 Correct 3 ms 3932 KB Output is correct
35 Correct 5 ms 4956 KB Output is correct
36 Correct 5 ms 4952 KB Output is correct
37 Correct 6 ms 4956 KB Output is correct
38 Correct 5 ms 4756 KB Output is correct
39 Correct 5 ms 4952 KB Output is correct
40 Correct 5 ms 4700 KB Output is correct
41 Correct 4 ms 4956 KB Output is correct
42 Correct 3 ms 3160 KB Output is correct
43 Correct 2 ms 3164 KB Output is correct
44 Correct 3 ms 3676 KB Output is correct
45 Correct 7 ms 4620 KB Output is correct
46 Correct 3 ms 3676 KB Output is correct
47 Correct 3 ms 3160 KB Output is correct
48 Correct 4 ms 4188 KB Output is correct
49 Correct 3 ms 3676 KB Output is correct
50 Correct 6 ms 4440 KB Output is correct
51 Correct 10 ms 4696 KB Output is correct
52 Correct 3 ms 3420 KB Output is correct
53 Correct 5 ms 4444 KB Output is correct
54 Correct 5 ms 4440 KB Output is correct
55 Correct 4 ms 3928 KB Output is correct
56 Correct 5 ms 4700 KB Output is correct
57 Correct 3 ms 3164 KB Output is correct
58 Correct 5 ms 4584 KB Output is correct
59 Correct 3 ms 3416 KB Output is correct
60 Correct 4 ms 4188 KB Output is correct
61 Correct 4 ms 4444 KB Output is correct
62 Correct 4 ms 4444 KB Output is correct
63 Correct 1870 ms 251680 KB Output is correct
64 Correct 2191 ms 253824 KB Output is correct
65 Correct 2119 ms 254288 KB Output is correct
66 Correct 2079 ms 251472 KB Output is correct
67 Correct 1999 ms 255124 KB Output is correct
68 Correct 2035 ms 250052 KB Output is correct
69 Correct 2073 ms 254316 KB Output is correct
70 Correct 2334 ms 254572 KB Output is correct
71 Execution timed out 3043 ms 88728 KB Time limit exceeded
72 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 676 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 672 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 0 ms 604 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 4 ms 3932 KB Output is correct
28 Correct 5 ms 4700 KB Output is correct
29 Correct 4 ms 4524 KB Output is correct
30 Correct 4 ms 3932 KB Output is correct
31 Correct 5 ms 4700 KB Output is correct
32 Correct 2 ms 3420 KB Output is correct
33 Correct 4 ms 4444 KB Output is correct
34 Correct 3 ms 3932 KB Output is correct
35 Correct 5 ms 4956 KB Output is correct
36 Correct 5 ms 4952 KB Output is correct
37 Correct 6 ms 4956 KB Output is correct
38 Correct 5 ms 4756 KB Output is correct
39 Correct 5 ms 4952 KB Output is correct
40 Correct 5 ms 4700 KB Output is correct
41 Correct 4 ms 4956 KB Output is correct
42 Correct 3 ms 3160 KB Output is correct
43 Correct 2 ms 3164 KB Output is correct
44 Correct 3 ms 3676 KB Output is correct
45 Correct 7 ms 4620 KB Output is correct
46 Correct 3 ms 3676 KB Output is correct
47 Correct 3 ms 3160 KB Output is correct
48 Correct 4 ms 4188 KB Output is correct
49 Correct 3 ms 3676 KB Output is correct
50 Correct 6 ms 4440 KB Output is correct
51 Correct 10 ms 4696 KB Output is correct
52 Correct 3 ms 3420 KB Output is correct
53 Correct 5 ms 4444 KB Output is correct
54 Correct 5 ms 4440 KB Output is correct
55 Correct 4 ms 3928 KB Output is correct
56 Correct 5 ms 4700 KB Output is correct
57 Correct 3 ms 3164 KB Output is correct
58 Correct 5 ms 4584 KB Output is correct
59 Correct 3 ms 3416 KB Output is correct
60 Correct 4 ms 4188 KB Output is correct
61 Correct 4 ms 4444 KB Output is correct
62 Correct 4 ms 4444 KB Output is correct
63 Correct 1870 ms 251680 KB Output is correct
64 Correct 2191 ms 253824 KB Output is correct
65 Correct 2119 ms 254288 KB Output is correct
66 Correct 2079 ms 251472 KB Output is correct
67 Correct 1999 ms 255124 KB Output is correct
68 Correct 2035 ms 250052 KB Output is correct
69 Correct 2073 ms 254316 KB Output is correct
70 Correct 2334 ms 254572 KB Output is correct
71 Execution timed out 3043 ms 88728 KB Time limit exceeded
72 Halted 0 ms 0 KB -