답안 #751517

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
751517	2023-05-31T16:43:34 Z	GrindMachine	Mountains (IOI17_mountains)	C++17	100 / 100	22 ms	16048 KB

mountains

// Om Namah Shivaya

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x, y) ((x + y - 1) / (y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl

#define rep(i, n) for(int i = 0; i < n; ++i)
#define rep1(i, n) for(int i = 1; i <= n; ++i)
#define rev(i, s, e) for(int i = s; i >= e; --i)
#define trav(i, a) for(auto &i : a)

template<typename T>
void amin(T &a, T b) {
    a = min(a, b);
}

template<typename T>
void amax(T &a, T b) {
    a = max(a, b);
}

#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif

/*

refs:
https://oj.uz/submission/684363

*/

const int MOD = 1e9 + 7;
const int N = 1e5 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;

#include "mountains.h"

int maximum_deevs(vector<int> a) {
	int n = sz(a);
	int dp[n+5][n+5];
	memset(dp,0,sizeof dp);

	rev(l,n-1,0){		
		dp[l][l] = 1;

		ld grad = -inf2;
		int recent = l;
		int sum = 1;

		for(int r = l + 1; r < n; ++r){
			// ignore l
			dp[l][r] = dp[l+1][r];

			// pick l
			ld curr = (a[r]-a[l]) / (ld) (r-l);
			if(curr >= grad){
				sum += dp[recent+1][r-1];
				recent = r;
				grad = curr;
			}

			sum += dp[recent+1][r];
			amax(dp[l][r], sum);

			sum -= dp[recent+1][r];
		}
	}

	// rep(l,n){
	// 	rep(r,n){
	// 		cout << dp[l][r] << " ";
	// 	}
	// 	cout << endl;
	// }

	return dp[0][n-1];
}

Subtask #1
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	1 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	0 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	0 ms	212 KB	Output is correct
24	Correct	0 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	1 ms	212 KB	Output is correct
27	Correct	1 ms	212 KB	Output is correct
28	Correct	0 ms	212 KB	Output is correct
29	Correct	1 ms	212 KB	Output is correct
30	Correct	0 ms	212 KB	Output is correct
31	Correct	0 ms	212 KB	Output is correct
32	Correct	1 ms	212 KB	Output is correct
33	Correct	0 ms	212 KB	Output is correct
34	Correct	1 ms	212 KB	Output is correct
35	Correct	0 ms	212 KB	Output is correct
36	Correct	0 ms	212 KB	Output is correct
37	Correct	1 ms	212 KB	Output is correct
38	Correct	0 ms	212 KB	Output is correct

Subtask #3
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	1 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	0 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	0 ms	212 KB	Output is correct
24	Correct	0 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	1 ms	212 KB	Output is correct
27	Correct	1 ms	212 KB	Output is correct
28	Correct	0 ms	212 KB	Output is correct
29	Correct	1 ms	212 KB	Output is correct
30	Correct	0 ms	212 KB	Output is correct
31	Correct	0 ms	212 KB	Output is correct
32	Correct	1 ms	212 KB	Output is correct
33	Correct	0 ms	212 KB	Output is correct
34	Correct	1 ms	212 KB	Output is correct
35	Correct	0 ms	212 KB	Output is correct
36	Correct	0 ms	212 KB	Output is correct
37	Correct	1 ms	212 KB	Output is correct
38	Correct	0 ms	212 KB	Output is correct
39	Correct	1 ms	340 KB	Output is correct
40	Correct	1 ms	596 KB	Output is correct
41	Correct	1 ms	596 KB	Output is correct
42	Correct	1 ms	596 KB	Output is correct
43	Correct	1 ms	596 KB	Output is correct
44	Correct	1 ms	596 KB	Output is correct
45	Correct	1 ms	596 KB	Output is correct
46	Correct	1 ms	596 KB	Output is correct
47	Correct	1 ms	596 KB	Output is correct
48	Correct	1 ms	596 KB	Output is correct
49	Correct	1 ms	596 KB	Output is correct
50	Correct	1 ms	596 KB	Output is correct
51	Correct	1 ms	596 KB	Output is correct
52	Correct	1 ms	596 KB	Output is correct
53	Correct	1 ms	596 KB	Output is correct
54	Correct	1 ms	596 KB	Output is correct
55	Correct	1 ms	596 KB	Output is correct
56	Correct	1 ms	596 KB	Output is correct
57	Correct	1 ms	596 KB	Output is correct
58	Correct	1 ms	596 KB	Output is correct
59	Correct	1 ms	596 KB	Output is correct
60	Correct	1 ms	596 KB	Output is correct
61	Correct	1 ms	596 KB	Output is correct

Subtask #4
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	1 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	0 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	0 ms	212 KB	Output is correct
24	Correct	0 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	1 ms	212 KB	Output is correct
27	Correct	1 ms	212 KB	Output is correct
28	Correct	0 ms	212 KB	Output is correct
29	Correct	1 ms	212 KB	Output is correct
30	Correct	0 ms	212 KB	Output is correct
31	Correct	0 ms	212 KB	Output is correct
32	Correct	1 ms	212 KB	Output is correct
33	Correct	0 ms	212 KB	Output is correct
34	Correct	1 ms	212 KB	Output is correct
35	Correct	0 ms	212 KB	Output is correct
36	Correct	0 ms	212 KB	Output is correct
37	Correct	1 ms	212 KB	Output is correct
38	Correct	0 ms	212 KB	Output is correct
39	Correct	1 ms	340 KB	Output is correct
40	Correct	1 ms	596 KB	Output is correct
41	Correct	1 ms	596 KB	Output is correct
42	Correct	1 ms	596 KB	Output is correct
43	Correct	1 ms	596 KB	Output is correct
44	Correct	1 ms	596 KB	Output is correct
45	Correct	1 ms	596 KB	Output is correct
46	Correct	1 ms	596 KB	Output is correct
47	Correct	1 ms	596 KB	Output is correct
48	Correct	1 ms	596 KB	Output is correct
49	Correct	1 ms	596 KB	Output is correct
50	Correct	1 ms	596 KB	Output is correct
51	Correct	1 ms	596 KB	Output is correct
52	Correct	1 ms	596 KB	Output is correct
53	Correct	1 ms	596 KB	Output is correct
54	Correct	1 ms	596 KB	Output is correct
55	Correct	1 ms	596 KB	Output is correct
56	Correct	1 ms	596 KB	Output is correct
57	Correct	1 ms	596 KB	Output is correct
58	Correct	1 ms	596 KB	Output is correct
59	Correct	1 ms	596 KB	Output is correct
60	Correct	1 ms	596 KB	Output is correct
61	Correct	1 ms	596 KB	Output is correct
62	Correct	4 ms	4180 KB	Output is correct
63	Correct	15 ms	15956 KB	Output is correct
64	Correct	15 ms	16040 KB	Output is correct
65	Correct	16 ms	15932 KB	Output is correct
66	Correct	16 ms	15940 KB	Output is correct
67	Correct	15 ms	16044 KB	Output is correct
68	Correct	18 ms	16032 KB	Output is correct
69	Correct	16 ms	15956 KB	Output is correct
70	Correct	16 ms	16036 KB	Output is correct
71	Correct	17 ms	15956 KB	Output is correct
72	Correct	16 ms	16048 KB	Output is correct
73	Correct	15 ms	15956 KB	Output is correct
74	Correct	17 ms	15956 KB	Output is correct
75	Correct	16 ms	15956 KB	Output is correct
76	Correct	14 ms	15956 KB	Output is correct
77	Correct	22 ms	16044 KB	Output is correct
78	Correct	20 ms	15956 KB	Output is correct
79	Correct	21 ms	15956 KB	Output is correct
80	Correct	21 ms	16040 KB	Output is correct
81	Correct	20 ms	15956 KB	Output is correct
82	Correct	14 ms	15948 KB	Output is correct
83	Correct	14 ms	16044 KB	Output is correct
84	Correct	15 ms	15956 KB	Output is correct
85	Correct	16 ms	15956 KB	Output is correct
86	Correct	16 ms	16040 KB	Output is correct

답안 #751517

Compilation message

Subtask #1 20.0 / 20.0

Subtask #2 20.0 / 20.0

Subtask #3 30.0 / 30.0

Subtask #4 30.0 / 30.0

Subtask #1
20.0 / 20.0

Subtask #2
20.0 / 20.0

Subtask #3
30.0 / 30.0

Subtask #4
30.0 / 30.0