oj.uz

Submission #114798

# Submission time Handle Problem Language Result Execution time Memory
114798 2019-06-02T22:25:08 Z MohamedAhmed04 Mountains (IOI17_mountains) C++14
100 / 100
 35 ms 16384 KB 
#include "mountains.h"
#include <bits/stdc++.h>

using namespace std ;

const int MAX = 2005 ;
int dp[MAX][MAX] ;
int n ;
vector<int>v ;

/*long double slope(int a , int b , int a2 , int b2)
{
    long double x = a * 1.0000 ;
    long double y = b * 1.0000 ;
    long double x2 = a2 * 1.0000 ;
    long double y2 = b2 * 1.0000 ;
    return ((y2-y) / (x2-x)) ;
}*/

bool check(int a,int b,int c)
{
    return 1ll * (v[a]*1ll - v[b] * 1ll) * (a*1ll - c*1ll) > 1ll * (v[a] * 1ll - v[c] * 1ll) * (a * 1ll - b * 1ll);
}

int solve(int l , int r)
{
    if(l >= r)
        return (l == r) ;
    int &ret = dp[l][r] ;
    if(ret != -1)
        return ret ;
    int MAX = 0 , idx = l ;
    for(int i = l ; i <= r ; ++i)
    {
        if(v[i] > MAX)
            MAX = v[i] , idx = i ;
    }
    int choice1 = solve(l , idx-1) + solve(idx+1 , r) ;
    int choice2 = 0;
    int last = idx+1 ;
    for(int i = last ; i <= r ; ++i)
    {
        i = last ;
        for(int j = i+1 ; j <= r ; ++j)
        {
            last = j ;
            if(!check(idx , i , j))
            {
                choice2 += solve(i+1 , j-1) ;
                break;
            }
        }
        if(last == r && check(idx , i , r))
            choice2 += solve(i+1 , r) ;
    }
    last = idx - 1 ;
    for(int i = last ; i >= l ; --i)
    {
        i = last ;
        for(int j = i-1 ; j >= l ; --j)
        {
            last = j ;
            if(!check(j , i , idx))
            {
                choice2 += solve(j+1 , i-1) ;
                break;
            }
        }
        if(last == l && check(l , i , idx))
            choice2 += solve(l , i-1) ;
    }
    choice2++ ;
    ret = max(choice1 , choice2) ;
    return ret ;
}
int maximum_deevs(vector<int>x)
{
    memset(dp , -1 , sizeof(dp)) ;
    v = x ;
    n = v.size() ;
    return solve(0 , n-1) ;
}

/*int main()
{
    int n ;
    cin>>n ;
    vector<int>x(n) ;
    for(auto &i : x)
        cin>>i ;
    cout<<maximum_deevs(x)<<"\n" ;
    return 0 ;
}*/

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 16000 KB Output is correct
2 Correct 14 ms 16000 KB Output is correct
3 Correct 13 ms 16000 KB Output is correct
4 Correct 14 ms 16128 KB Output is correct
5 Correct 13 ms 16128 KB Output is correct
6 Correct 13 ms 16128 KB Output is correct
7 Correct 13 ms 16128 KB Output is correct
8 Correct 13 ms 16128 KB Output is correct
9 Correct 13 ms 16128 KB Output is correct
10 Correct 14 ms 16000 KB Output is correct
11 Correct 14 ms 16076 KB Output is correct
12 Correct 13 ms 16000 KB Output is correct
13 Correct 13 ms 16100 KB Output is correct
14 Correct 13 ms 16000 KB Output is correct
15 Correct 13 ms 16128 KB Output is correct
16 Correct 13 ms 16100 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 16000 KB Output is correct
2 Correct 14 ms 16000 KB Output is correct
3 Correct 13 ms 16000 KB Output is correct
4 Correct 14 ms 16128 KB Output is correct
5 Correct 13 ms 16128 KB Output is correct
6 Correct 13 ms 16128 KB Output is correct
7 Correct 13 ms 16128 KB Output is correct
8 Correct 13 ms 16128 KB Output is correct
9 Correct 13 ms 16128 KB Output is correct
10 Correct 14 ms 16000 KB Output is correct
11 Correct 14 ms 16076 KB Output is correct
12 Correct 13 ms 16000 KB Output is correct
13 Correct 13 ms 16100 KB Output is correct
14 Correct 13 ms 16000 KB Output is correct
15 Correct 13 ms 16128 KB Output is correct
16 Correct 13 ms 16100 KB Output is correct
17 Correct 13 ms 16000 KB Output is correct
18 Correct 14 ms 16084 KB Output is correct
19 Correct 14 ms 16128 KB Output is correct
20 Correct 14 ms 16000 KB Output is correct
21 Correct 14 ms 16120 KB Output is correct
22 Correct 14 ms 16128 KB Output is correct
23 Correct 13 ms 16128 KB Output is correct
24 Correct 13 ms 16128 KB Output is correct
25 Correct 14 ms 16000 KB Output is correct
26 Correct 14 ms 16064 KB Output is correct
27 Correct 13 ms 16000 KB Output is correct
28 Correct 14 ms 16000 KB Output is correct
29 Correct 35 ms 16000 KB Output is correct
30 Correct 13 ms 16128 KB Output is correct
31 Correct 14 ms 16000 KB Output is correct
32 Correct 14 ms 16000 KB Output is correct
33 Correct 14 ms 16000 KB Output is correct
34 Correct 14 ms 15984 KB Output is correct
35 Correct 14 ms 16128 KB Output is correct
36 Correct 14 ms 16000 KB Output is correct
37 Correct 13 ms 16000 KB Output is correct
38 Correct 14 ms 16000 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 16000 KB Output is correct
2 Correct 14 ms 16000 KB Output is correct
3 Correct 13 ms 16000 KB Output is correct
4 Correct 14 ms 16128 KB Output is correct
5 Correct 13 ms 16128 KB Output is correct
6 Correct 13 ms 16128 KB Output is correct
7 Correct 13 ms 16128 KB Output is correct
8 Correct 13 ms 16128 KB Output is correct
9 Correct 13 ms 16128 KB Output is correct
10 Correct 14 ms 16000 KB Output is correct
11 Correct 14 ms 16076 KB Output is correct
12 Correct 13 ms 16000 KB Output is correct
13 Correct 13 ms 16100 KB Output is correct
14 Correct 13 ms 16000 KB Output is correct
15 Correct 13 ms 16128 KB Output is correct
16 Correct 13 ms 16100 KB Output is correct
17 Correct 13 ms 16000 KB Output is correct
18 Correct 14 ms 16084 KB Output is correct
19 Correct 14 ms 16128 KB Output is correct
20 Correct 14 ms 16000 KB Output is correct
21 Correct 14 ms 16120 KB Output is correct
22 Correct 14 ms 16128 KB Output is correct
23 Correct 13 ms 16128 KB Output is correct
24 Correct 13 ms 16128 KB Output is correct
25 Correct 14 ms 16000 KB Output is correct
26 Correct 14 ms 16064 KB Output is correct
27 Correct 13 ms 16000 KB Output is correct
28 Correct 14 ms 16000 KB Output is correct
29 Correct 35 ms 16000 KB Output is correct
30 Correct 13 ms 16128 KB Output is correct
31 Correct 14 ms 16000 KB Output is correct
32 Correct 14 ms 16000 KB Output is correct
33 Correct 14 ms 16000 KB Output is correct
34 Correct 14 ms 15984 KB Output is correct
35 Correct 14 ms 16128 KB Output is correct
36 Correct 14 ms 16000 KB Output is correct
37 Correct 13 ms 16000 KB Output is correct
38 Correct 14 ms 16000 KB Output is correct
39 Correct 14 ms 16128 KB Output is correct
40 Correct 13 ms 16128 KB Output is correct
41 Correct 14 ms 16128 KB Output is correct
42 Correct 14 ms 16000 KB Output is correct
43 Correct 14 ms 16128 KB Output is correct
44 Correct 13 ms 16000 KB Output is correct
45 Correct 14 ms 16128 KB Output is correct
46 Correct 14 ms 16012 KB Output is correct
47 Correct 14 ms 16128 KB Output is correct
48 Correct 14 ms 16128 KB Output is correct
49 Correct 14 ms 16000 KB Output is correct
50 Correct 14 ms 16000 KB Output is correct
51 Correct 20 ms 16000 KB Output is correct
52 Correct 15 ms 16128 KB Output is correct
53 Correct 15 ms 16128 KB Output is correct
54 Correct 23 ms 16128 KB Output is correct
55 Correct 16 ms 16128 KB Output is correct
56 Correct 15 ms 16044 KB Output is correct
57 Correct 14 ms 16128 KB Output is correct
58 Correct 13 ms 16000 KB Output is correct
59 Correct 14 ms 16128 KB Output is correct
60 Correct 14 ms 16128 KB Output is correct
61 Correct 14 ms 16128 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 16000 KB Output is correct
2 Correct 14 ms 16000 KB Output is correct
3 Correct 13 ms 16000 KB Output is correct
4 Correct 14 ms 16128 KB Output is correct
5 Correct 13 ms 16128 KB Output is correct
6 Correct 13 ms 16128 KB Output is correct
7 Correct 13 ms 16128 KB Output is correct
8 Correct 13 ms 16128 KB Output is correct
9 Correct 13 ms 16128 KB Output is correct
10 Correct 14 ms 16000 KB Output is correct
11 Correct 14 ms 16076 KB Output is correct
12 Correct 13 ms 16000 KB Output is correct
13 Correct 13 ms 16100 KB Output is correct
14 Correct 13 ms 16000 KB Output is correct
15 Correct 13 ms 16128 KB Output is correct
16 Correct 13 ms 16100 KB Output is correct
17 Correct 13 ms 16000 KB Output is correct
18 Correct 14 ms 16084 KB Output is correct
19 Correct 14 ms 16128 KB Output is correct
20 Correct 14 ms 16000 KB Output is correct
21 Correct 14 ms 16120 KB Output is correct
22 Correct 14 ms 16128 KB Output is correct
23 Correct 13 ms 16128 KB Output is correct
24 Correct 13 ms 16128 KB Output is correct
25 Correct 14 ms 16000 KB Output is correct
26 Correct 14 ms 16064 KB Output is correct
27 Correct 13 ms 16000 KB Output is correct
28 Correct 14 ms 16000 KB Output is correct
29 Correct 35 ms 16000 KB Output is correct
30 Correct 13 ms 16128 KB Output is correct
31 Correct 14 ms 16000 KB Output is correct
32 Correct 14 ms 16000 KB Output is correct
33 Correct 14 ms 16000 KB Output is correct
34 Correct 14 ms 15984 KB Output is correct
35 Correct 14 ms 16128 KB Output is correct
36 Correct 14 ms 16000 KB Output is correct
37 Correct 13 ms 16000 KB Output is correct
38 Correct 14 ms 16000 KB Output is correct
39 Correct 14 ms 16128 KB Output is correct
40 Correct 13 ms 16128 KB Output is correct
41 Correct 14 ms 16128 KB Output is correct
42 Correct 14 ms 16000 KB Output is correct
43 Correct 14 ms 16128 KB Output is correct
44 Correct 13 ms 16000 KB Output is correct
45 Correct 14 ms 16128 KB Output is correct
46 Correct 14 ms 16012 KB Output is correct
47 Correct 14 ms 16128 KB Output is correct
48 Correct 14 ms 16128 KB Output is correct
49 Correct 14 ms 16000 KB Output is correct
50 Correct 14 ms 16000 KB Output is correct
51 Correct 20 ms 16000 KB Output is correct
52 Correct 15 ms 16128 KB Output is correct
53 Correct 15 ms 16128 KB Output is correct
54 Correct 23 ms 16128 KB Output is correct
55 Correct 16 ms 16128 KB Output is correct
56 Correct 15 ms 16044 KB Output is correct
57 Correct 14 ms 16128 KB Output is correct
58 Correct 13 ms 16000 KB Output is correct
59 Correct 14 ms 16128 KB Output is correct
60 Correct 14 ms 16128 KB Output is correct
61 Correct 14 ms 16128 KB Output is correct
62 Correct 14 ms 16128 KB Output is correct
63 Correct 14 ms 16128 KB Output is correct
64 Correct 14 ms 16044 KB Output is correct
65 Correct 14 ms 16128 KB Output is correct
66 Correct 15 ms 16064 KB Output is correct
67 Correct 15 ms 16128 KB Output is correct
68 Correct 14 ms 16100 KB Output is correct
69 Correct 14 ms 16256 KB Output is correct
70 Correct 18 ms 16256 KB Output is correct
71 Correct 18 ms 16256 KB Output is correct
72 Correct 18 ms 16256 KB Output is correct
73 Correct 18 ms 16256 KB Output is correct
74 Correct 18 ms 16256 KB Output is correct
75 Correct 19 ms 16256 KB Output is correct
76 Correct 13 ms 16156 KB Output is correct
77 Correct 31 ms 16384 KB Output is correct
78 Correct 29 ms 16384 KB Output is correct
79 Correct 31 ms 16384 KB Output is correct
80 Correct 30 ms 16384 KB Output is correct
81 Correct 30 ms 16384 KB Output is correct
82 Correct 18 ms 16384 KB Output is correct
83 Correct 21 ms 16128 KB Output is correct
84 Correct 19 ms 16128 KB Output is correct
85 Correct 18 ms 16384 KB Output is correct
86 Correct 18 ms 16376 KB Output is correct