oj.uz

Submission #652428

# Submission time Handle Problem Language Result Execution time Memory
652428 2022-10-22T15:03:09 Z JooDdae Mountains (IOI17_mountains) C++17
100 / 100
 29 ms 14216 KB 
#include "mountains.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;

struct point{
   ll x, y;
   bool operator < (const point &a)const{
       return tie(x, y) < tie(a.x, a.y);
   }
   bool operator <= (const point &a)const{
       return tie(x, y) <= tie(a.x, a.y);
   }
   point operator - (const point &a)const{
       return {x-a.x, y-a.y};
   }
   bool operator == (const point &a)const{
       return tie(x, y) == tie(a.x, a.y);
   }
};

ll cross(point a, point b){
   return a.x * b.y - a.y * b.x;
}
int ccw(point a, point b, point c){
   ll re = cross(b-a, c-a);
   return re > 0 ? 1 : re < 0 ? -1 : 0;
}

int dp[2020][2020];

int maximum_deevs(vector<int> y) {
    int n = y.size();

    for(int i=1;i<=n;i++) {
        dp[i][i] = dp[i][i-1] = 1;
        for(int j=i-2, k=i-1, s=1;j>=1;j--) {
            if(ccw({j, y[j-1]}, {k, y[k-1]}, {i, y[i-1]}) >= 0) {
                s += dp[k-1][j+1], k = j;
            } else {
                dp[i][j] += dp[k-1][j];
            }
            dp[i][j] = max(dp[i-1][j], dp[i][j]+s);
        }
    }
    
    return dp[n][1];
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 312 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 308 KB Output is correct
16 Correct 1 ms 340 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 312 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 308 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 436 KB Output is correct
19 Correct 1 ms 436 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 436 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 380 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 1 ms 432 KB Output is correct
35 Correct 1 ms 432 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 1 ms 468 KB Output is correct
38 Correct 1 ms 436 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 312 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 308 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 436 KB Output is correct
19 Correct 1 ms 436 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 436 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 380 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 1 ms 432 KB Output is correct
35 Correct 1 ms 432 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 1 ms 468 KB Output is correct
38 Correct 1 ms 436 KB Output is correct
39 Correct 1 ms 1108 KB Output is correct
40 Correct 1 ms 1588 KB Output is correct
41 Correct 1 ms 1588 KB Output is correct
42 Correct 2 ms 1620 KB Output is correct
43 Correct 1 ms 1620 KB Output is correct
44 Correct 1 ms 1620 KB Output is correct
45 Correct 2 ms 1588 KB Output is correct
46 Correct 2 ms 1620 KB Output is correct
47 Correct 2 ms 1588 KB Output is correct
48 Correct 2 ms 1588 KB Output is correct
49 Correct 1 ms 1620 KB Output is correct
50 Correct 1 ms 1620 KB Output is correct
51 Correct 1 ms 1620 KB Output is correct
52 Correct 1 ms 1620 KB Output is correct
53 Correct 1 ms 1620 KB Output is correct
54 Correct 1 ms 1620 KB Output is correct
55 Correct 2 ms 1620 KB Output is correct
56 Correct 1 ms 1584 KB Output is correct
57 Correct 2 ms 1620 KB Output is correct
58 Correct 1 ms 1620 KB Output is correct
59 Correct 1 ms 1620 KB Output is correct
60 Correct 1 ms 1620 KB Output is correct
61 Correct 1 ms 1588 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 312 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 308 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 436 KB Output is correct
19 Correct 1 ms 436 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 436 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 380 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 1 ms 432 KB Output is correct
35 Correct 1 ms 432 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 1 ms 468 KB Output is correct
38 Correct 1 ms 436 KB Output is correct
39 Correct 1 ms 1108 KB Output is correct
40 Correct 1 ms 1588 KB Output is correct
41 Correct 1 ms 1588 KB Output is correct
42 Correct 2 ms 1620 KB Output is correct
43 Correct 1 ms 1620 KB Output is correct
44 Correct 1 ms 1620 KB Output is correct
45 Correct 2 ms 1588 KB Output is correct
46 Correct 2 ms 1620 KB Output is correct
47 Correct 2 ms 1588 KB Output is correct
48 Correct 2 ms 1588 KB Output is correct
49 Correct 1 ms 1620 KB Output is correct
50 Correct 1 ms 1620 KB Output is correct
51 Correct 1 ms 1620 KB Output is correct
52 Correct 1 ms 1620 KB Output is correct
53 Correct 1 ms 1620 KB Output is correct
54 Correct 1 ms 1620 KB Output is correct
55 Correct 2 ms 1620 KB Output is correct
56 Correct 1 ms 1584 KB Output is correct
57 Correct 2 ms 1620 KB Output is correct
58 Correct 1 ms 1620 KB Output is correct
59 Correct 1 ms 1620 KB Output is correct
60 Correct 1 ms 1620 KB Output is correct
61 Correct 1 ms 1588 KB Output is correct
62 Correct 5 ms 6228 KB Output is correct
63 Correct 15 ms 14164 KB Output is correct
64 Correct 13 ms 14120 KB Output is correct
65 Correct 15 ms 14160 KB Output is correct
66 Correct 14 ms 14164 KB Output is correct
67 Correct 13 ms 14136 KB Output is correct
68 Correct 13 ms 14164 KB Output is correct
69 Correct 18 ms 14148 KB Output is correct
70 Correct 16 ms 14172 KB Output is correct
71 Correct 15 ms 14168 KB Output is correct
72 Correct 15 ms 14096 KB Output is correct
73 Correct 16 ms 14164 KB Output is correct
74 Correct 16 ms 14200 KB Output is correct
75 Correct 15 ms 14164 KB Output is correct
76 Correct 13 ms 14140 KB Output is correct
77 Correct 22 ms 14164 KB Output is correct
78 Correct 26 ms 14064 KB Output is correct
79 Correct 22 ms 14080 KB Output is correct
80 Correct 29 ms 14172 KB Output is correct
81 Correct 22 ms 14156 KB Output is correct
82 Correct 13 ms 14216 KB Output is correct
83 Correct 14 ms 14164 KB Output is correct
84 Correct 13 ms 14164 KB Output is correct
85 Correct 14 ms 14188 KB Output is correct
86 Correct 14 ms 14204 KB Output is correct