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Submission #411704

# Submission time Handle Problem Language Result Execution time Memory
411704 2021-05-25T18:32:56 Z nxteru Mountains (IOI17_mountains) C++14
100 / 100
 30 ms 16152 KB 
#include "mountains.h"
#include <bits/stdc++.h>
using namespace std;
using ll=long long;
vector<int>y;
int dp[2005][2005];
int solve(int l,int r){
	if(r<l)return 0;
	if(l==r)return 1;
	if(dp[l][r]!=-1)return dp[l][r];
	int ma=-1;
	for(int i=l;i<=r;i++){
		if(ma==-1||y[ma]<y[i])ma=i;
	}
	int s=1;
	int la=ma;
	for(int i=ma-1;i>=l;i--){
		if(ll(y[ma]-y[i])*ll(ma-la)<=ll(y[ma]-y[la])*ll(ma-i)){
			s+=solve(i+1,la-1);
			la=i;
		}
	}
	s+=solve(l,la-1);
	la=ma;
	for(int i=ma+1;i<=r;i++){
		if(ll(y[ma]-y[i])*ll(ma-la)>=ll(y[ma]-y[la])*ll(ma-i)){
			s+=solve(la+1,i-1);
			la=i;
		}
	}
	s+=solve(la+1,r);
	return dp[l][r]=max(s,solve(l,ma-1)+solve(ma+1,r));
}
int maximum_deevs(vector<int> Y) {
	y=Y;
	int n=y.size();
	for(int i=0;i<n;i++)for(int j=0;j<n;j++)dp[i][j]=-1;
	return solve(0,y.size()-1);
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 460 KB Output is correct
18 Correct 1 ms 460 KB Output is correct
19 Correct 1 ms 460 KB Output is correct
20 Correct 1 ms 460 KB Output is correct
21 Correct 1 ms 460 KB Output is correct
22 Correct 1 ms 460 KB Output is correct
23 Correct 1 ms 460 KB Output is correct
24 Correct 1 ms 460 KB Output is correct
25 Correct 1 ms 460 KB Output is correct
26 Correct 1 ms 460 KB Output is correct
27 Correct 1 ms 460 KB Output is correct
28 Correct 1 ms 460 KB Output is correct
29 Correct 1 ms 460 KB Output is correct
30 Correct 1 ms 460 KB Output is correct
31 Correct 1 ms 460 KB Output is correct
32 Correct 1 ms 460 KB Output is correct
33 Correct 1 ms 460 KB Output is correct
34 Correct 1 ms 460 KB Output is correct
35 Correct 1 ms 460 KB Output is correct
36 Correct 1 ms 432 KB Output is correct
37 Correct 1 ms 460 KB Output is correct
38 Correct 1 ms 460 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 460 KB Output is correct
18 Correct 1 ms 460 KB Output is correct
19 Correct 1 ms 460 KB Output is correct
20 Correct 1 ms 460 KB Output is correct
21 Correct 1 ms 460 KB Output is correct
22 Correct 1 ms 460 KB Output is correct
23 Correct 1 ms 460 KB Output is correct
24 Correct 1 ms 460 KB Output is correct
25 Correct 1 ms 460 KB Output is correct
26 Correct 1 ms 460 KB Output is correct
27 Correct 1 ms 460 KB Output is correct
28 Correct 1 ms 460 KB Output is correct
29 Correct 1 ms 460 KB Output is correct
30 Correct 1 ms 460 KB Output is correct
31 Correct 1 ms 460 KB Output is correct
32 Correct 1 ms 460 KB Output is correct
33 Correct 1 ms 460 KB Output is correct
34 Correct 1 ms 460 KB Output is correct
35 Correct 1 ms 460 KB Output is correct
36 Correct 1 ms 432 KB Output is correct
37 Correct 1 ms 460 KB Output is correct
38 Correct 1 ms 460 KB Output is correct
39 Correct 1 ms 1228 KB Output is correct
40 Correct 2 ms 1740 KB Output is correct
41 Correct 2 ms 1740 KB Output is correct
42 Correct 2 ms 1740 KB Output is correct
43 Correct 2 ms 1740 KB Output is correct
44 Correct 2 ms 1740 KB Output is correct
45 Correct 2 ms 1868 KB Output is correct
46 Correct 2 ms 1868 KB Output is correct
47 Correct 2 ms 1868 KB Output is correct
48 Correct 2 ms 1836 KB Output is correct
49 Correct 2 ms 1868 KB Output is correct
50 Correct 2 ms 1868 KB Output is correct
51 Correct 2 ms 1740 KB Output is correct
52 Correct 4 ms 1868 KB Output is correct
53 Correct 3 ms 1868 KB Output is correct
54 Correct 3 ms 1868 KB Output is correct
55 Correct 3 ms 1868 KB Output is correct
56 Correct 3 ms 1868 KB Output is correct
57 Correct 2 ms 1868 KB Output is correct
58 Correct 2 ms 1740 KB Output is correct
59 Correct 2 ms 1832 KB Output is correct
60 Correct 2 ms 1868 KB Output is correct
61 Correct 2 ms 1832 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 460 KB Output is correct
18 Correct 1 ms 460 KB Output is correct
19 Correct 1 ms 460 KB Output is correct
20 Correct 1 ms 460 KB Output is correct
21 Correct 1 ms 460 KB Output is correct
22 Correct 1 ms 460 KB Output is correct
23 Correct 1 ms 460 KB Output is correct
24 Correct 1 ms 460 KB Output is correct
25 Correct 1 ms 460 KB Output is correct
26 Correct 1 ms 460 KB Output is correct
27 Correct 1 ms 460 KB Output is correct
28 Correct 1 ms 460 KB Output is correct
29 Correct 1 ms 460 KB Output is correct
30 Correct 1 ms 460 KB Output is correct
31 Correct 1 ms 460 KB Output is correct
32 Correct 1 ms 460 KB Output is correct
33 Correct 1 ms 460 KB Output is correct
34 Correct 1 ms 460 KB Output is correct
35 Correct 1 ms 460 KB Output is correct
36 Correct 1 ms 432 KB Output is correct
37 Correct 1 ms 460 KB Output is correct
38 Correct 1 ms 460 KB Output is correct
39 Correct 1 ms 1228 KB Output is correct
40 Correct 2 ms 1740 KB Output is correct
41 Correct 2 ms 1740 KB Output is correct
42 Correct 2 ms 1740 KB Output is correct
43 Correct 2 ms 1740 KB Output is correct
44 Correct 2 ms 1740 KB Output is correct
45 Correct 2 ms 1868 KB Output is correct
46 Correct 2 ms 1868 KB Output is correct
47 Correct 2 ms 1868 KB Output is correct
48 Correct 2 ms 1836 KB Output is correct
49 Correct 2 ms 1868 KB Output is correct
50 Correct 2 ms 1868 KB Output is correct
51 Correct 2 ms 1740 KB Output is correct
52 Correct 4 ms 1868 KB Output is correct
53 Correct 3 ms 1868 KB Output is correct
54 Correct 3 ms 1868 KB Output is correct
55 Correct 3 ms 1868 KB Output is correct
56 Correct 3 ms 1868 KB Output is correct
57 Correct 2 ms 1868 KB Output is correct
58 Correct 2 ms 1740 KB Output is correct
59 Correct 2 ms 1832 KB Output is correct
60 Correct 2 ms 1868 KB Output is correct
61 Correct 2 ms 1832 KB Output is correct
62 Correct 4 ms 8140 KB Output is correct
63 Correct 8 ms 15916 KB Output is correct
64 Correct 8 ms 15948 KB Output is correct
65 Correct 8 ms 15948 KB Output is correct
66 Correct 9 ms 16056 KB Output is correct
67 Correct 9 ms 15956 KB Output is correct
68 Correct 9 ms 15932 KB Output is correct
69 Correct 9 ms 15928 KB Output is correct
70 Correct 15 ms 16036 KB Output is correct
71 Correct 15 ms 16076 KB Output is correct
72 Correct 15 ms 16104 KB Output is correct
73 Correct 15 ms 16120 KB Output is correct
74 Correct 15 ms 16076 KB Output is correct
75 Correct 15 ms 16112 KB Output is correct
76 Correct 8 ms 15948 KB Output is correct
77 Correct 29 ms 16076 KB Output is correct
78 Correct 27 ms 16056 KB Output is correct
79 Correct 30 ms 16076 KB Output is correct
80 Correct 29 ms 16092 KB Output is correct
81 Correct 29 ms 16152 KB Output is correct
82 Correct 20 ms 16080 KB Output is correct
83 Correct 21 ms 16032 KB Output is correct
84 Correct 18 ms 16024 KB Output is correct
85 Correct 19 ms 16040 KB Output is correct
86 Correct 18 ms 16076 KB Output is correct