oj.uz

Submission #928603

# Submission time Handle Problem Language Result Execution time Memory
928603 2024-02-16T18:10:39 Z jcelin Let's Win the Election (JOI22_ho_t3) C++14
100 / 100
 884 ms 7000 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;

typedef pair<int,int> ii;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<ll> vll;
typedef vector<pll> vpll;

#define PB push_back
#define PF push_front
#define PPB pop_back
#define PPF pop_front
#define X first
#define Y second
#define MP make_pair
#define all(x) (x).begin(), (x).end()

const int mod = 1e9 + 7; //998244353;
const int inf = 1e9 + 7;
const ll INF = 1e18 + 7;
const int logo = 20;
const int MAXN = 700;
const int off = 1 << logo;
const int trsz = off << 1;
const int dx[] = {1, -1, 0, 0};
const int dy[] = {0, 0, -1, 1};

typedef long double ld;
typedef pair<ld, ld> pld;
const ld eps = 1e-15;

vector<pld> arr;
ld dp[MAXN][MAXN];

bool cmp(pld &a, pld &b){
	if(abs(a.Y - b.Y) > eps) return a.Y < b.Y;
	return a.X < b.X;
}

void solve(){
	int n, k;
	cin >> n >> k;
	arr.resize(n);
	for(auto &x : arr){
		cin >> x.X >> x.Y;
		if(x.Y == -1) x.Y = (ld)inf;
	}
	sort(all(arr), cmp);
	
	//L - broj pomocnika
	//R - broj obicnih
	ld ans = inf;
	for(int L=0; L<=k; L++){			
		for(int i=0; i<=n; i++) for(int j=0; j<=n; j++) dp[i][j] = (ld)inf;
		dp[0][0] = 0;
		
		for(int i=1; i<=n; i++){
			pld cur = arr[i - 1];
			for(int R=0; R<=min(i, k - L); R++){
				int clef = i - R;
				if(R) dp[i][R] = min(dp[i][R], dp[i - 1][R - 1] + (ld)cur.X / (ld)(L + 1));
				
				if(clef <= L) dp[i][R] = min(dp[i][R], dp[i - 1][R] + (ld)cur.Y / (ld)clef);
				else dp[i][R] = min(dp[i][R], dp[i - 1][R]);
			}
		}
		ans = min(ans, dp[n][k - L]);
	}
	
	cout << fixed << setprecision(10) << ans << "\n";
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	int tt = 1;
	//cin >> tt;
	while(tt--) solve();
	return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 58 ms 6748 KB Output is correct
6 Correct 161 ms 6800 KB Output is correct
7 Correct 369 ms 6748 KB Output is correct
8 Correct 612 ms 6816 KB Output is correct
9 Correct 882 ms 6804 KB Output is correct
10 Correct 562 ms 6992 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 58 ms 6748 KB Output is correct
6 Correct 161 ms 6800 KB Output is correct
7 Correct 369 ms 6748 KB Output is correct
8 Correct 612 ms 6816 KB Output is correct
9 Correct 882 ms 6804 KB Output is correct
10 Correct 562 ms 6992 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 199 ms 6800 KB Output is correct
13 Correct 198 ms 6800 KB Output is correct
14 Correct 201 ms 6800 KB Output is correct
15 Correct 558 ms 6804 KB Output is correct
16 Correct 560 ms 6800 KB Output is correct
17 Correct 568 ms 6804 KB Output is correct
18 Correct 875 ms 6804 KB Output is correct
19 Correct 884 ms 6796 KB Output is correct
20 Correct 878 ms 6996 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 600 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 468 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 600 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 468 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2404 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2508 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 2648 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2588 KB Output is correct
40 Correct 1 ms 2396 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 600 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 468 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2404 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2508 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 2648 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2588 KB Output is correct
40 Correct 1 ms 2396 KB Output is correct
41 Correct 1 ms 2396 KB Output is correct
42 Correct 1 ms 2396 KB Output is correct
43 Correct 2 ms 2396 KB Output is correct
44 Correct 2 ms 2396 KB Output is correct
45 Correct 4 ms 2396 KB Output is correct
46 Correct 4 ms 2396 KB Output is correct
47 Correct 5 ms 2396 KB Output is correct
48 Correct 5 ms 2392 KB Output is correct
49 Correct 6 ms 2396 KB Output is correct
50 Correct 6 ms 2396 KB Output is correct
51 Correct 8 ms 2392 KB Output is correct
52 Correct 8 ms 2396 KB Output is correct
53 Correct 5 ms 2396 KB Output is correct
54 Correct 5 ms 2392 KB Output is correct
55 Correct 5 ms 2616 KB Output is correct
56 Correct 5 ms 2392 KB Output is correct
57 Correct 5 ms 2392 KB Output is correct
58 Correct 5 ms 2396 KB Output is correct
59 Correct 5 ms 2516 KB Output is correct
60 Correct 5 ms 2508 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 866 ms 7000 KB Output is correct
2 Correct 866 ms 6744 KB Output is correct
3 Correct 867 ms 6748 KB Output is correct
4 Correct 864 ms 6800 KB Output is correct
5 Correct 872 ms 6800 KB Output is correct
6 Correct 864 ms 6744 KB Output is correct
7 Correct 880 ms 6804 KB Output is correct

Subtask #7
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 58 ms 6748 KB Output is correct
6 Correct 161 ms 6800 KB Output is correct
7 Correct 369 ms 6748 KB Output is correct
8 Correct 612 ms 6816 KB Output is correct
9 Correct 882 ms 6804 KB Output is correct
10 Correct 562 ms 6992 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 199 ms 6800 KB Output is correct
13 Correct 198 ms 6800 KB Output is correct
14 Correct 201 ms 6800 KB Output is correct
15 Correct 558 ms 6804 KB Output is correct
16 Correct 560 ms 6800 KB Output is correct
17 Correct 568 ms 6804 KB Output is correct
18 Correct 875 ms 6804 KB Output is correct
19 Correct 884 ms 6796 KB Output is correct
20 Correct 878 ms 6996 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 600 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 0 ms 460 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 468 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 344 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2404 KB Output is correct
39 Correct 1 ms 2396 KB Output is correct
40 Correct 1 ms 2396 KB Output is correct
41 Correct 1 ms 2396 KB Output is correct
42 Correct 1 ms 2396 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 1 ms 2396 KB Output is correct
45 Correct 1 ms 2396 KB Output is correct
46 Correct 1 ms 2396 KB Output is correct
47 Correct 1 ms 2396 KB Output is correct
48 Correct 1 ms 2396 KB Output is correct
49 Correct 1 ms 2396 KB Output is correct
50 Correct 1 ms 2508 KB Output is correct
51 Correct 1 ms 2396 KB Output is correct
52 Correct 1 ms 2648 KB Output is correct
53 Correct 1 ms 2396 KB Output is correct
54 Correct 1 ms 2396 KB Output is correct
55 Correct 1 ms 2396 KB Output is correct
56 Correct 1 ms 2396 KB Output is correct
57 Correct 1 ms 2396 KB Output is correct
58 Correct 1 ms 2396 KB Output is correct
59 Correct 1 ms 2588 KB Output is correct
60 Correct 1 ms 2396 KB Output is correct
61 Correct 1 ms 2396 KB Output is correct
62 Correct 1 ms 2396 KB Output is correct
63 Correct 2 ms 2396 KB Output is correct
64 Correct 2 ms 2396 KB Output is correct
65 Correct 4 ms 2396 KB Output is correct
66 Correct 4 ms 2396 KB Output is correct
67 Correct 5 ms 2396 KB Output is correct
68 Correct 5 ms 2392 KB Output is correct
69 Correct 6 ms 2396 KB Output is correct
70 Correct 6 ms 2396 KB Output is correct
71 Correct 8 ms 2392 KB Output is correct
72 Correct 8 ms 2396 KB Output is correct
73 Correct 5 ms 2396 KB Output is correct
74 Correct 5 ms 2392 KB Output is correct
75 Correct 5 ms 2616 KB Output is correct
76 Correct 5 ms 2392 KB Output is correct
77 Correct 5 ms 2392 KB Output is correct
78 Correct 5 ms 2396 KB Output is correct
79 Correct 5 ms 2516 KB Output is correct
80 Correct 5 ms 2508 KB Output is correct
81 Correct 866 ms 7000 KB Output is correct
82 Correct 866 ms 6744 KB Output is correct
83 Correct 867 ms 6748 KB Output is correct
84 Correct 864 ms 6800 KB Output is correct
85 Correct 872 ms 6800 KB Output is correct
86 Correct 864 ms 6744 KB Output is correct
87 Correct 880 ms 6804 KB Output is correct
88 Correct 58 ms 6748 KB Output is correct
89 Correct 58 ms 6748 KB Output is correct
90 Correct 159 ms 6804 KB Output is correct
91 Correct 163 ms 6824 KB Output is correct
92 Correct 367 ms 6800 KB Output is correct
93 Correct 368 ms 6800 KB Output is correct
94 Correct 605 ms 6748 KB Output is correct
95 Correct 647 ms 6992 KB Output is correct
96 Correct 768 ms 6800 KB Output is correct
97 Correct 764 ms 6992 KB Output is correct
98 Correct 565 ms 6992 KB Output is correct
99 Correct 558 ms 6748 KB Output is correct
100 Correct 569 ms 6996 KB Output is correct
101 Correct 564 ms 6816 KB Output is correct
102 Correct 571 ms 6748 KB Output is correct
103 Correct 565 ms 6748 KB Output is correct
104 Correct 568 ms 6804 KB Output is correct
105 Correct 559 ms 6800 KB Output is correct