oj.uz

Submission #863890

# Submission time Handle Problem Language Result Execution time Memory
863890 2023-10-21T10:40:04 Z phoenix0423 Let's Win the Election (JOI22_ho_t3) C++17
66 / 100
 2500 ms 2688 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<double, double> pll;
#define fastio ios::sync_with_stdio(false), cin.tie(0)
#pragma GCC optimize("Ofast")
#define pb push_back
#define eb emplace_back
#define f first
#define s second
#define lowbit(x) x&-x
const int maxn = 2e5 + 5;
const double INF = 1e18;

//enumerate number of b from 0 ... k - 1
//it is optimal to get collaboraters first then give speeches to k - #b people
//for a set of collaboraters, it is optimal to sort them by increasing bs

double dp[505][505];

int main(void){
	fastio;
	int n, k;
	cin>>n>>k;
	vector<pll> a(n);
	for(int i = 0; i < n; i++){
		cin>>a[i].f>>a[i].s;
		if(a[i].s == -1) a[i].s = INF;
	}
	sort(a.begin(), a.end(), [&](pll a, pll b){ return a.s < b.s || (a.s == b.s && a.f < b.f);});
	double best = INF;
	for(int goal = 0; goal < k; goal++){ // enumerate number of collaboraters(can also tenary search)
		for(int i = 0; i <= n; i++) for(int j = 0; j <= goal; j++) dp[i][j] = INF;
		dp[0][0] = 0;
		for(int i = 0; i < n; i++){
			for(int j = 0; j < goal; j++){
				dp[i + 1][j] = min(dp[i + 1][j], dp[i][j] + a[i].f / (goal + 1));
				dp[i + 1][j + 1] = min(dp[i + 1][j + 1], dp[i][j] + a[i].s / (j + 1));
			}
		}
		for(int i = 0; i <= n; i++){
			//choose k - i elements for second set
			vector<double> cand;
			for(int j = i; j < n; j++) cand.pb(a[j].f);
			sort(cand.begin(), cand.end());
			double cur = dp[i][goal];
			for(int j = 0; j < k - i; j++) cur += cand[j] / (goal + 1);
			best = min(best, cur);
		}
	}
	cout<<fixed<<setprecision(5)<<best<<"\n";
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 72 ms 2428 KB Output is correct
6 Correct 189 ms 2396 KB Output is correct
7 Correct 424 ms 2396 KB Output is correct
8 Correct 689 ms 2428 KB Output is correct
9 Correct 1008 ms 2684 KB Output is correct
10 Correct 537 ms 2432 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 72 ms 2428 KB Output is correct
6 Correct 189 ms 2396 KB Output is correct
7 Correct 424 ms 2396 KB Output is correct
8 Correct 689 ms 2428 KB Output is correct
9 Correct 1008 ms 2684 KB Output is correct
10 Correct 537 ms 2432 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 234 ms 2424 KB Output is correct
13 Correct 394 ms 2428 KB Output is correct
14 Correct 318 ms 2428 KB Output is correct
15 Correct 627 ms 2640 KB Output is correct
16 Correct 1004 ms 2428 KB Output is correct
17 Correct 986 ms 2432 KB Output is correct
18 Correct 990 ms 2436 KB Output is correct
19 Correct 1558 ms 2688 KB Output is correct
20 Correct 1278 ms 2432 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 544 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 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 348 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 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 544 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 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 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 0 ms 344 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 544 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 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 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 0 ms 344 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 3 ms 860 KB Output is correct
42 Correct 2 ms 604 KB Output is correct
43 Correct 4 ms 604 KB Output is correct
44 Correct 5 ms 860 KB Output is correct
45 Correct 7 ms 604 KB Output is correct
46 Correct 8 ms 604 KB Output is correct
47 Correct 10 ms 860 KB Output is correct
48 Correct 9 ms 860 KB Output is correct
49 Correct 13 ms 860 KB Output is correct
50 Correct 12 ms 856 KB Output is correct
51 Correct 16 ms 860 KB Output is correct
52 Correct 15 ms 860 KB Output is correct
53 Correct 10 ms 860 KB Output is correct
54 Correct 11 ms 860 KB Output is correct
55 Correct 10 ms 604 KB Output is correct
56 Correct 8 ms 860 KB Output is correct
57 Correct 8 ms 864 KB Output is correct
58 Correct 9 ms 604 KB Output is correct
59 Correct 6 ms 860 KB Output is correct
60 Correct 6 ms 604 KB Output is correct

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2558 ms 2424 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 72 ms 2428 KB Output is correct
6 Correct 189 ms 2396 KB Output is correct
7 Correct 424 ms 2396 KB Output is correct
8 Correct 689 ms 2428 KB Output is correct
9 Correct 1008 ms 2684 KB Output is correct
10 Correct 537 ms 2432 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 234 ms 2424 KB Output is correct
13 Correct 394 ms 2428 KB Output is correct
14 Correct 318 ms 2428 KB Output is correct
15 Correct 627 ms 2640 KB Output is correct
16 Correct 1004 ms 2428 KB Output is correct
17 Correct 986 ms 2432 KB Output is correct
18 Correct 990 ms 2436 KB Output is correct
19 Correct 1558 ms 2688 KB Output is correct
20 Correct 1278 ms 2432 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 344 KB Output is correct
28 Correct 0 ms 344 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 544 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 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 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 1 ms 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 1 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 1 ms 348 KB Output is correct
56 Correct 0 ms 344 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 3 ms 860 KB Output is correct
62 Correct 2 ms 604 KB Output is correct
63 Correct 4 ms 604 KB Output is correct
64 Correct 5 ms 860 KB Output is correct
65 Correct 7 ms 604 KB Output is correct
66 Correct 8 ms 604 KB Output is correct
67 Correct 10 ms 860 KB Output is correct
68 Correct 9 ms 860 KB Output is correct
69 Correct 13 ms 860 KB Output is correct
70 Correct 12 ms 856 KB Output is correct
71 Correct 16 ms 860 KB Output is correct
72 Correct 15 ms 860 KB Output is correct
73 Correct 10 ms 860 KB Output is correct
74 Correct 11 ms 860 KB Output is correct
75 Correct 10 ms 604 KB Output is correct
76 Correct 8 ms 860 KB Output is correct
77 Correct 8 ms 864 KB Output is correct
78 Correct 9 ms 604 KB Output is correct
79 Correct 6 ms 860 KB Output is correct
80 Correct 6 ms 604 KB Output is correct
81 Execution timed out 2558 ms 2424 KB Time limit exceeded
82 Halted 0 ms 0 KB -