oj.uz

Submission #814960

# Submission time Handle Problem Language Result Execution time Memory
814960 2023-08-08T11:26:09 Z MohamedAhmed04 Let's Win the Election (JOI22_ho_t3) C++14
100 / 100
 692 ms 5980 KB 
#include <bits/stdc++.h>

using namespace std ;

const int MAX = 500 + 10 ;

int arr[MAX] ;
int n , k ;

int a[MAX] , b[MAX] ;

long double dp[MAX][MAX] ;
int vis[MAX][MAX] ;
int val[MAX][MAX] ;

vector< pair<long double , long double> >vp ;

int m ;

long double solve(int idx , int cnt)
{
	if(cnt == m)
		return (1.00L * val[idx][k-idx] / (1.00L * m)) ;
	if(idx == k)
		return 1e9 ;
	long double &ret = dp[idx][cnt] ;
	if(vis[idx][cnt] == m)
		return ret ;
	vis[idx][cnt] = m ;
	ret = solve(idx+1 , cnt+1) + (1.00L * vp[idx].second / (1.00L * cnt)) ;
	ret = min(ret , solve(idx+1 , cnt) + (1.00L * vp[idx].first / m)) ;
	return ret ;
}


int main()
{
	memset(vis , -1 , sizeof(vis)) ;
	ios_base::sync_with_stdio(0) ;
	cin.tie(0) ;
	cin>>n>>k ;
	for(int i = 0 ; i < n ; ++i)
	{
		cin>>a[i]>>b[i] ;
		if(b[i] == -1)
			b[i] = 1e9 ;
	}
	for(int i = 0 ; i < n ; ++i)
		vp.emplace_back(b[i] , a[i]) ;
	sort(vp.begin() , vp.end()) ;
	for(auto &p : vp)
		swap(p.first , p.second) ;
	vector<int>v ;
	for(int i = n-1 ; i >= 0 ; --i)
	{
		v.push_back(vp[i].first) ;
		sort(v.begin() , v.end()) ;
		val[i][0] = 0 ;
		for(int j = 1 ; j <= n-i ; ++j)
			val[i][j] = val[i][j-1] + v[j-1] ;
	}
	long double ans = 1e18 ;
	for(int i = 1 ; i <= k ; ++i)
	{
		m = i ;
		ans = min(ans , solve(0 , 1)) ;
	}
	return cout<<fixed<<setprecision(12)<<ans<<"\n" , 0 ;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1236 KB Output is correct
2 Correct 1 ms 1364 KB Output is correct
3 Correct 1 ms 1364 KB Output is correct
4 Correct 1 ms 1364 KB Output is correct
5 Correct 5 ms 2516 KB Output is correct
6 Correct 14 ms 3028 KB Output is correct
7 Correct 78 ms 3768 KB Output is correct
8 Correct 277 ms 4760 KB Output is correct
9 Correct 692 ms 5796 KB Output is correct
10 Correct 216 ms 4640 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1236 KB Output is correct
2 Correct 1 ms 1364 KB Output is correct
3 Correct 1 ms 1364 KB Output is correct
4 Correct 1 ms 1364 KB Output is correct
5 Correct 5 ms 2516 KB Output is correct
6 Correct 14 ms 3028 KB Output is correct
7 Correct 78 ms 3768 KB Output is correct
8 Correct 277 ms 4760 KB Output is correct
9 Correct 692 ms 5796 KB Output is correct
10 Correct 216 ms 4640 KB Output is correct
11 Correct 1 ms 1236 KB Output is correct
12 Correct 25 ms 3144 KB Output is correct
13 Correct 23 ms 3196 KB Output is correct
14 Correct 20 ms 3192 KB Output is correct
15 Correct 223 ms 4656 KB Output is correct
16 Correct 211 ms 4548 KB Output is correct
17 Correct 237 ms 4684 KB Output is correct
18 Correct 626 ms 5880 KB Output is correct
19 Correct 645 ms 5876 KB Output is correct
20 Correct 658 ms 5784 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1360 KB Output is correct
2 Correct 1 ms 1364 KB Output is correct
3 Correct 1 ms 1364 KB Output is correct
4 Correct 1 ms 1364 KB Output is correct
5 Correct 1 ms 1364 KB Output is correct
6 Correct 1 ms 1364 KB Output is correct
7 Correct 1 ms 1364 KB Output is correct
8 Correct 1 ms 1352 KB Output is correct
9 Correct 1 ms 1364 KB Output is correct
10 Correct 1 ms 1364 KB Output is correct
11 Correct 1 ms 1364 KB Output is correct
12 Correct 1 ms 1356 KB Output is correct
13 Correct 1 ms 1364 KB Output is correct
14 Correct 1 ms 1364 KB Output is correct
15 Correct 1 ms 1352 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1360 KB Output is correct
2 Correct 1 ms 1364 KB Output is correct
3 Correct 1 ms 1364 KB Output is correct
4 Correct 1 ms 1364 KB Output is correct
5 Correct 1 ms 1364 KB Output is correct
6 Correct 1 ms 1364 KB Output is correct
7 Correct 1 ms 1364 KB Output is correct
8 Correct 1 ms 1352 KB Output is correct
9 Correct 1 ms 1364 KB Output is correct
10 Correct 1 ms 1364 KB Output is correct
11 Correct 1 ms 1364 KB Output is correct
12 Correct 1 ms 1356 KB Output is correct
13 Correct 1 ms 1364 KB Output is correct
14 Correct 1 ms 1364 KB Output is correct
15 Correct 1 ms 1352 KB Output is correct
16 Correct 1 ms 1364 KB Output is correct
17 Correct 1 ms 1364 KB Output is correct
18 Correct 1 ms 1356 KB Output is correct
19 Correct 1 ms 1364 KB Output is correct
20 Correct 1 ms 1364 KB Output is correct
21 Correct 1 ms 1360 KB Output is correct
22 Correct 1 ms 1364 KB Output is correct
23 Correct 1 ms 1360 KB Output is correct
24 Correct 1 ms 1364 KB Output is correct
25 Correct 1 ms 1364 KB Output is correct
26 Correct 1 ms 1364 KB Output is correct
27 Correct 1 ms 1364 KB Output is correct
28 Correct 1 ms 1364 KB Output is correct
29 Correct 1 ms 1356 KB Output is correct
30 Correct 1 ms 1356 KB Output is correct
31 Correct 1 ms 1356 KB Output is correct
32 Correct 1 ms 1364 KB Output is correct
33 Correct 1 ms 1360 KB Output is correct
34 Correct 1 ms 1364 KB Output is correct
35 Correct 1 ms 1364 KB Output is correct
36 Correct 1 ms 1356 KB Output is correct
37 Correct 1 ms 1348 KB Output is correct
38 Correct 1 ms 1364 KB Output is correct
39 Correct 1 ms 1364 KB Output is correct
40 Correct 1 ms 1364 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1360 KB Output is correct
2 Correct 1 ms 1364 KB Output is correct
3 Correct 1 ms 1364 KB Output is correct
4 Correct 1 ms 1364 KB Output is correct
5 Correct 1 ms 1364 KB Output is correct
6 Correct 1 ms 1364 KB Output is correct
7 Correct 1 ms 1364 KB Output is correct
8 Correct 1 ms 1352 KB Output is correct
9 Correct 1 ms 1364 KB Output is correct
10 Correct 1 ms 1364 KB Output is correct
11 Correct 1 ms 1364 KB Output is correct
12 Correct 1 ms 1356 KB Output is correct
13 Correct 1 ms 1364 KB Output is correct
14 Correct 1 ms 1364 KB Output is correct
15 Correct 1 ms 1352 KB Output is correct
16 Correct 1 ms 1364 KB Output is correct
17 Correct 1 ms 1364 KB Output is correct
18 Correct 1 ms 1356 KB Output is correct
19 Correct 1 ms 1364 KB Output is correct
20 Correct 1 ms 1364 KB Output is correct
21 Correct 1 ms 1360 KB Output is correct
22 Correct 1 ms 1364 KB Output is correct
23 Correct 1 ms 1360 KB Output is correct
24 Correct 1 ms 1364 KB Output is correct
25 Correct 1 ms 1364 KB Output is correct
26 Correct 1 ms 1364 KB Output is correct
27 Correct 1 ms 1364 KB Output is correct
28 Correct 1 ms 1364 KB Output is correct
29 Correct 1 ms 1356 KB Output is correct
30 Correct 1 ms 1356 KB Output is correct
31 Correct 1 ms 1356 KB Output is correct
32 Correct 1 ms 1364 KB Output is correct
33 Correct 1 ms 1360 KB Output is correct
34 Correct 1 ms 1364 KB Output is correct
35 Correct 1 ms 1364 KB Output is correct
36 Correct 1 ms 1356 KB Output is correct
37 Correct 1 ms 1348 KB Output is correct
38 Correct 1 ms 1364 KB Output is correct
39 Correct 1 ms 1364 KB Output is correct
40 Correct 1 ms 1364 KB Output is correct
41 Correct 1 ms 1492 KB Output is correct
42 Correct 1 ms 1608 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 1748 KB Output is correct
46 Correct 2 ms 1740 KB Output is correct
47 Correct 2 ms 1876 KB Output is correct
48 Correct 2 ms 1868 KB Output is correct
49 Correct 6 ms 1996 KB Output is correct
50 Correct 5 ms 1876 KB Output is correct
51 Correct 6 ms 2132 KB Output is correct
52 Correct 6 ms 2132 KB Output is correct
53 Correct 2 ms 1876 KB Output is correct
54 Correct 2 ms 1872 KB Output is correct
55 Correct 2 ms 1876 KB Output is correct
56 Correct 2 ms 1876 KB Output is correct
57 Correct 3 ms 1876 KB Output is correct
58 Correct 2 ms 1876 KB Output is correct
59 Correct 3 ms 1876 KB Output is correct
60 Correct 2 ms 1872 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 602 ms 5980 KB Output is correct
2 Correct 611 ms 5880 KB Output is correct
3 Correct 617 ms 5872 KB Output is correct
4 Correct 625 ms 5880 KB Output is correct
5 Correct 625 ms 5880 KB Output is correct
6 Correct 640 ms 5876 KB Output is correct
7 Correct 599 ms 5836 KB Output is correct

Subtask #7
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1236 KB Output is correct
2 Correct 1 ms 1364 KB Output is correct
3 Correct 1 ms 1364 KB Output is correct
4 Correct 1 ms 1364 KB Output is correct
5 Correct 5 ms 2516 KB Output is correct
6 Correct 14 ms 3028 KB Output is correct
7 Correct 78 ms 3768 KB Output is correct
8 Correct 277 ms 4760 KB Output is correct
9 Correct 692 ms 5796 KB Output is correct
10 Correct 216 ms 4640 KB Output is correct
11 Correct 1 ms 1236 KB Output is correct
12 Correct 25 ms 3144 KB Output is correct
13 Correct 23 ms 3196 KB Output is correct
14 Correct 20 ms 3192 KB Output is correct
15 Correct 223 ms 4656 KB Output is correct
16 Correct 211 ms 4548 KB Output is correct
17 Correct 237 ms 4684 KB Output is correct
18 Correct 626 ms 5880 KB Output is correct
19 Correct 645 ms 5876 KB Output is correct
20 Correct 658 ms 5784 KB Output is correct
21 Correct 1 ms 1360 KB Output is correct
22 Correct 1 ms 1364 KB Output is correct
23 Correct 1 ms 1364 KB Output is correct
24 Correct 1 ms 1364 KB Output is correct
25 Correct 1 ms 1364 KB Output is correct
26 Correct 1 ms 1364 KB Output is correct
27 Correct 1 ms 1364 KB Output is correct
28 Correct 1 ms 1352 KB Output is correct
29 Correct 1 ms 1364 KB Output is correct
30 Correct 1 ms 1364 KB Output is correct
31 Correct 1 ms 1364 KB Output is correct
32 Correct 1 ms 1356 KB Output is correct
33 Correct 1 ms 1364 KB Output is correct
34 Correct 1 ms 1364 KB Output is correct
35 Correct 1 ms 1352 KB Output is correct
36 Correct 1 ms 1364 KB Output is correct
37 Correct 1 ms 1364 KB Output is correct
38 Correct 1 ms 1356 KB Output is correct
39 Correct 1 ms 1364 KB Output is correct
40 Correct 1 ms 1364 KB Output is correct
41 Correct 1 ms 1360 KB Output is correct
42 Correct 1 ms 1364 KB Output is correct
43 Correct 1 ms 1360 KB Output is correct
44 Correct 1 ms 1364 KB Output is correct
45 Correct 1 ms 1364 KB Output is correct
46 Correct 1 ms 1364 KB Output is correct
47 Correct 1 ms 1364 KB Output is correct
48 Correct 1 ms 1364 KB Output is correct
49 Correct 1 ms 1356 KB Output is correct
50 Correct 1 ms 1356 KB Output is correct
51 Correct 1 ms 1356 KB Output is correct
52 Correct 1 ms 1364 KB Output is correct
53 Correct 1 ms 1360 KB Output is correct
54 Correct 1 ms 1364 KB Output is correct
55 Correct 1 ms 1364 KB Output is correct
56 Correct 1 ms 1356 KB Output is correct
57 Correct 1 ms 1348 KB Output is correct
58 Correct 1 ms 1364 KB Output is correct
59 Correct 1 ms 1364 KB Output is correct
60 Correct 1 ms 1364 KB Output is correct
61 Correct 1 ms 1492 KB Output is correct
62 Correct 1 ms 1608 KB Output is correct
63 Correct 1 ms 1620 KB Output is correct
64 Correct 1 ms 1620 KB Output is correct
65 Correct 2 ms 1748 KB Output is correct
66 Correct 2 ms 1740 KB Output is correct
67 Correct 2 ms 1876 KB Output is correct
68 Correct 2 ms 1868 KB Output is correct
69 Correct 6 ms 1996 KB Output is correct
70 Correct 5 ms 1876 KB Output is correct
71 Correct 6 ms 2132 KB Output is correct
72 Correct 6 ms 2132 KB Output is correct
73 Correct 2 ms 1876 KB Output is correct
74 Correct 2 ms 1872 KB Output is correct
75 Correct 2 ms 1876 KB Output is correct
76 Correct 2 ms 1876 KB Output is correct
77 Correct 3 ms 1876 KB Output is correct
78 Correct 2 ms 1876 KB Output is correct
79 Correct 3 ms 1876 KB Output is correct
80 Correct 2 ms 1872 KB Output is correct
81 Correct 602 ms 5980 KB Output is correct
82 Correct 611 ms 5880 KB Output is correct
83 Correct 617 ms 5872 KB Output is correct
84 Correct 625 ms 5880 KB Output is correct
85 Correct 625 ms 5880 KB Output is correct
86 Correct 640 ms 5876 KB Output is correct
87 Correct 599 ms 5836 KB Output is correct
88 Correct 5 ms 2516 KB Output is correct
89 Correct 5 ms 2508 KB Output is correct
90 Correct 13 ms 3028 KB Output is correct
91 Correct 14 ms 3156 KB Output is correct
92 Correct 79 ms 3752 KB Output is correct
93 Correct 77 ms 3856 KB Output is correct
94 Correct 267 ms 4788 KB Output is correct
95 Correct 259 ms 4876 KB Output is correct
96 Correct 431 ms 5404 KB Output is correct
97 Correct 464 ms 5476 KB Output is correct
98 Correct 204 ms 4632 KB Output is correct
99 Correct 205 ms 4576 KB Output is correct
100 Correct 219 ms 4692 KB Output is correct
101 Correct 207 ms 4672 KB Output is correct
102 Correct 205 ms 4556 KB Output is correct
103 Correct 221 ms 4816 KB Output is correct
104 Correct 217 ms 4564 KB Output is correct
105 Correct 202 ms 4628 KB Output is correct