답안 #863893

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
863893	2023-10-21T10:47:08 Z	phoenix0423	Let's Win the Election (JOI22_ho_t3)	C++17	100 / 100	192 ms	2644 KB

Main

#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);});
	auto f = [&](int goal) -> double {
		double best = INF;
		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);
		}
		return best;
	};
	int l = 0, r = k;
	while(r - l >= 3){
		int m1 = l + (r - l) / 3, m2 = r - (r - l) / 3;
		double c1 = f(m1), c2 = f(m2);
		if(c1 > c2) l = m1;
		else r = m2;
	}
	double best = INF;
	for(int i = l; i <= r; i++) best = min(best, f(i));
	cout<<fixed<<setprecision(5)<<best<<"\n";
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	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	348 KB	Output is correct
5	Correct	35 ms	2440 KB	Output is correct
6	Correct	39 ms	2396 KB	Output is correct
7	Correct	46 ms	2396 KB	Output is correct
8	Correct	51 ms	2392 KB	Output is correct
9	Correct	55 ms	2392 KB	Output is correct
10	Correct	40 ms	2428 KB	Output is correct

Subtask #2
5.0 / 5.0

#	결과	실행 시간	메모리	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	348 KB	Output is correct
5	Correct	35 ms	2440 KB	Output is correct
6	Correct	39 ms	2396 KB	Output is correct
7	Correct	46 ms	2396 KB	Output is correct
8	Correct	51 ms	2392 KB	Output is correct
9	Correct	55 ms	2392 KB	Output is correct
10	Correct	40 ms	2428 KB	Output is correct
11	Correct	0 ms	512 KB	Output is correct
12	Correct	50 ms	2396 KB	Output is correct
13	Correct	77 ms	2392 KB	Output is correct
14	Correct	62 ms	2396 KB	Output is correct
15	Correct	69 ms	2392 KB	Output is correct
16	Correct	102 ms	2444 KB	Output is correct
17	Correct	85 ms	2396 KB	Output is correct
18	Correct	85 ms	2396 KB	Output is correct
19	Correct	111 ms	2428 KB	Output is correct
20	Correct	82 ms	2640 KB	Output is correct

Subtask #3
11.0 / 11.0

#	결과	메모리	Grader output
1	Correct	348 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	348 KB	Output is correct
5	Correct	348 KB	Output is correct
6	Correct	348 KB	Output is correct
7	Correct	348 KB	Output is correct
8	Correct	348 KB	Output is correct
9	Correct	348 KB	Output is correct
10	Correct	348 KB	Output is correct
11	Correct	344 KB	Output is correct
12	Correct	348 KB	Output is correct
13	Correct	348 KB	Output is correct
14	Correct	348 KB	Output is correct
15	Correct	348 KB	Output is correct

Subtask #4
12.0 / 12.0

#	결과	실행 시간	메모리	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	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	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	344 KB	Output is correct
17	Correct	1 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	1 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	1 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	1 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	1 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	0 ms	348 KB	Output is correct
33	Correct	0 ms	344 KB	Output is correct
34	Correct	1 ms	348 KB	Output is correct
35	Correct	1 ms	348 KB	Output is correct
36	Correct	0 ms	348 KB	Output is correct
37	Correct	1 ms	348 KB	Output is correct
38	Correct	0 ms	348 KB	Output is correct
39	Correct	1 ms	348 KB	Output is correct
40	Correct	0 ms	348 KB	Output is correct

Subtask #5
33.0 / 33.0

#	결과	실행 시간	메모리	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	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	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	344 KB	Output is correct
17	Correct	1 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	1 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	1 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	1 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	1 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	0 ms	348 KB	Output is correct
33	Correct	0 ms	344 KB	Output is correct
34	Correct	1 ms	348 KB	Output is correct
35	Correct	1 ms	348 KB	Output is correct
36	Correct	0 ms	348 KB	Output is correct
37	Correct	1 ms	348 KB	Output is correct
38	Correct	0 ms	348 KB	Output is correct
39	Correct	1 ms	348 KB	Output is correct
40	Correct	0 ms	348 KB	Output is correct
41	Correct	3 ms	604 KB	Output is correct
42	Correct	3 ms	604 KB	Output is correct
43	Correct	3 ms	604 KB	Output is correct
44	Correct	3 ms	604 KB	Output is correct
45	Correct	4 ms	604 KB	Output is correct
46	Correct	4 ms	604 KB	Output is correct
47	Correct	4 ms	860 KB	Output is correct
48	Correct	4 ms	604 KB	Output is correct
49	Correct	4 ms	860 KB	Output is correct
50	Correct	4 ms	604 KB	Output is correct
51	Correct	5 ms	860 KB	Output is correct
52	Correct	4 ms	860 KB	Output is correct
53	Correct	4 ms	864 KB	Output is correct
54	Correct	4 ms	860 KB	Output is correct
55	Correct	4 ms	864 KB	Output is correct
56	Correct	3 ms	604 KB	Output is correct
57	Correct	4 ms	604 KB	Output is correct
58	Correct	3 ms	604 KB	Output is correct
59	Correct	3 ms	860 KB	Output is correct
60	Correct	3 ms	860 KB	Output is correct

Subtask #6
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	176 ms	2396 KB	Output is correct
2	Correct	181 ms	2436 KB	Output is correct
3	Correct	183 ms	2392 KB	Output is correct
4	Correct	188 ms	2392 KB	Output is correct
5	Correct	192 ms	2396 KB	Output is correct
6	Correct	179 ms	2392 KB	Output is correct
7	Correct	153 ms	2436 KB	Output is correct

Subtask #7
23.0 / 23.0

#	결과	실행 시간	메모리	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	348 KB	Output is correct
5	Correct	35 ms	2440 KB	Output is correct
6	Correct	39 ms	2396 KB	Output is correct
7	Correct	46 ms	2396 KB	Output is correct
8	Correct	51 ms	2392 KB	Output is correct
9	Correct	55 ms	2392 KB	Output is correct
10	Correct	40 ms	2428 KB	Output is correct
11	Correct	0 ms	512 KB	Output is correct
12	Correct	50 ms	2396 KB	Output is correct
13	Correct	77 ms	2392 KB	Output is correct
14	Correct	62 ms	2396 KB	Output is correct
15	Correct	69 ms	2392 KB	Output is correct
16	Correct	102 ms	2444 KB	Output is correct
17	Correct	85 ms	2396 KB	Output is correct
18	Correct	85 ms	2396 KB	Output is correct
19	Correct	111 ms	2428 KB	Output is correct
20	Correct	82 ms	2640 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	0 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	344 KB	Output is correct
32	Correct	0 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	0 ms	348 KB	Output is correct
36	Correct	0 ms	344 KB	Output is correct
37	Correct	1 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	1 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	1 ms	348 KB	Output is correct
45	Correct	0 ms	348 KB	Output is correct
46	Correct	0 ms	348 KB	Output is correct
47	Correct	1 ms	348 KB	Output is correct
48	Correct	1 ms	348 KB	Output is correct
49	Correct	1 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	0 ms	348 KB	Output is correct
53	Correct	0 ms	344 KB	Output is correct
54	Correct	1 ms	348 KB	Output is correct
55	Correct	1 ms	348 KB	Output is correct
56	Correct	0 ms	348 KB	Output is correct
57	Correct	1 ms	348 KB	Output is correct
58	Correct	0 ms	348 KB	Output is correct
59	Correct	1 ms	348 KB	Output is correct
60	Correct	0 ms	348 KB	Output is correct
61	Correct	3 ms	604 KB	Output is correct
62	Correct	3 ms	604 KB	Output is correct
63	Correct	3 ms	604 KB	Output is correct
64	Correct	3 ms	604 KB	Output is correct
65	Correct	4 ms	604 KB	Output is correct
66	Correct	4 ms	604 KB	Output is correct
67	Correct	4 ms	860 KB	Output is correct
68	Correct	4 ms	604 KB	Output is correct
69	Correct	4 ms	860 KB	Output is correct
70	Correct	4 ms	604 KB	Output is correct
71	Correct	5 ms	860 KB	Output is correct
72	Correct	4 ms	860 KB	Output is correct
73	Correct	4 ms	864 KB	Output is correct
74	Correct	4 ms	860 KB	Output is correct
75	Correct	4 ms	864 KB	Output is correct
76	Correct	3 ms	604 KB	Output is correct
77	Correct	4 ms	604 KB	Output is correct
78	Correct	3 ms	604 KB	Output is correct
79	Correct	3 ms	860 KB	Output is correct
80	Correct	3 ms	860 KB	Output is correct
81	Correct	176 ms	2396 KB	Output is correct
82	Correct	181 ms	2436 KB	Output is correct
83	Correct	183 ms	2392 KB	Output is correct
84	Correct	188 ms	2392 KB	Output is correct
85	Correct	192 ms	2396 KB	Output is correct
86	Correct	179 ms	2392 KB	Output is correct
87	Correct	153 ms	2436 KB	Output is correct
88	Correct	104 ms	2644 KB	Output is correct
89	Correct	104 ms	2428 KB	Output is correct
90	Correct	127 ms	2396 KB	Output is correct
91	Correct	127 ms	2392 KB	Output is correct
92	Correct	149 ms	2436 KB	Output is correct
93	Correct	155 ms	2396 KB	Output is correct
94	Correct	162 ms	2396 KB	Output is correct
95	Correct	170 ms	2392 KB	Output is correct
96	Correct	165 ms	2432 KB	Output is correct
97	Correct	176 ms	2396 KB	Output is correct
98	Correct	138 ms	2392 KB	Output is correct
99	Correct	146 ms	2392 KB	Output is correct
100	Correct	160 ms	2640 KB	Output is correct
101	Correct	152 ms	2396 KB	Output is correct
102	Correct	148 ms	2396 KB	Output is correct
103	Correct	136 ms	2392 KB	Output is correct
104	Correct	127 ms	2392 KB	Output is correct
105	Correct	39 ms	2396 KB	Output is correct

답안 #863893

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 5.0 / 5.0

Subtask #3 11.0 / 11.0

Subtask #4 12.0 / 12.0

Subtask #5 33.0 / 33.0

Subtask #6 11.0 / 11.0

Subtask #7 23.0 / 23.0

Subtask #1
5.0 / 5.0

Subtask #2
5.0 / 5.0

Subtask #3
11.0 / 11.0

Subtask #4
12.0 / 12.0

Subtask #5
33.0 / 33.0

Subtask #6
11.0 / 11.0

Subtask #7
23.0 / 23.0