oj.uz

Submission #938014

# Submission time Handle Problem Language Result Execution time Memory
938014 2024-03-04T17:38:55 Z vjudge1 Let's Win the Election (JOI22_ho_t3) C++17
77 / 100
 2500 ms 1104 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long double ld;

int N, K; 

void solve(){
	vector<pair<ld, ld>> v(N);
	bool special = true;
	for(int i = 0; i < N; i++){
		cin >> v[i].second >> v[i].first;
		if(v[i].first == -1) v[i].first = 1e9;
		else if(v[i].first != v[i].second) special = false;
	}
	sort(v.begin(), v.end());
	ld ans = 7e18;
	for(ld collaborators = 0; collaborators < K; collaborators++){
		vector<ld> dp(collaborators + 1, 1e18);
		dp[0] = 0;
		for(int i = 0; i < N; i++){
			for(ld j = collaborators; j >= 0; j--){
				if(j != collaborators) dp[j+1] = min(dp[j+1], dp[j] + v[i].first / (j+1.0));
				dp[j] += v[i].second / (collaborators+1.0);
			}
		}
		ans = min(ans, dp[collaborators]);
	}
	cout << fixed << setprecision(8) << ans << "\n";
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);

	cin >> N >> K;
	if(K == N){
		solve();
		return 0;
	}
	vector<pair<ld, ld>> v(N);
	bool special = true;
	for(int i = 0; i < N; i++){
		cin >> v[i].second >> v[i].first;
		if(v[i].first == -1) v[i].first = 1e9;
		else if(v[i].first != v[i].second) special = false;
	}
	sort(v.begin(), v.end());
	ld ans = 7e18;
	if(special){
		for(int collaborators = 0; collaborators < K; collaborators++){
			ld cost = 0;
			ld hv = 1;
			for(int i = 0; i < collaborators; i++){
				cost += v[i].first / hv;
				hv++;
			}
			vector<ld> a;
			for(int i = collaborators; i < N; i++){
				a.push_back(v[i].second);
			}
			sort(a.begin(), a.end());
			for(int i = 0; i < K - collaborators; i++){
				cost += a[i] / hv;
			}
			ans = min(ans, cost);
		}
	}else{
		for(ld collaborators = 0; collaborators < K; collaborators++){
			vector<vector<ld>> dp(K+1, vector<ld>(collaborators + 1, 1e18));
			dp[0][0] = 0;
			for(int i = 0; i < N; i++){
				for(int elem = K - 1; elem >= 0; elem--){					
					for(ld j = collaborators; j >= 0; j--){
						if(j != collaborators) dp[elem+1][j+1] = min(dp[elem+1][j+1], dp[elem][j] + v[i].first / (j+1.0));
						dp[elem+1][j] = min(dp[elem+1][j], dp[elem][j] + v[i].second / (collaborators+1.0));
					}
				}
			}
			ans = min(ans, dp[K][collaborators]);
		}
	}
	cout << fixed << setprecision(8) << ans << "\n";
}

Compilation message

Main.cpp: In function 'void solve()':
Main.cpp:11:7: warning: variable 'special' set but not used [-Wunused-but-set-variable]
   11 |  bool special = true;
      |       ^~~~~~~

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 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 3 ms 348 KB Output is correct
8 Correct 4 ms 348 KB Output is correct
9 Correct 957 ms 592 KB Output is correct
10 Correct 4 ms 344 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 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 3 ms 348 KB Output is correct
8 Correct 4 ms 348 KB Output is correct
9 Correct 957 ms 592 KB Output is correct
10 Correct 4 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 2 ms 348 KB Output is correct
13 Correct 4 ms 348 KB Output is correct
14 Correct 4 ms 344 KB Output is correct
15 Correct 4 ms 348 KB Output is correct
16 Correct 6 ms 600 KB Output is correct
17 Correct 6 ms 348 KB Output is correct
18 Correct 918 ms 492 KB Output is correct
19 Correct 915 ms 500 KB Output is correct
20 Correct 946 ms 500 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 1 ms 344 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 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 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 1 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 1 ms 344 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 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 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 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 476 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 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 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 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 2 ms 512 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 1 ms 344 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 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 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 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 476 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 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 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 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 2 ms 512 KB Output is correct
41 Correct 3 ms 348 KB Output is correct
42 Correct 3 ms 348 KB Output is correct
43 Correct 23 ms 348 KB Output is correct
44 Correct 23 ms 348 KB Output is correct
45 Correct 105 ms 596 KB Output is correct
46 Correct 105 ms 592 KB Output is correct
47 Correct 232 ms 528 KB Output is correct
48 Correct 234 ms 596 KB Output is correct
49 Correct 432 ms 768 KB Output is correct
50 Correct 437 ms 1040 KB Output is correct
51 Correct 8 ms 344 KB Output is correct
52 Correct 8 ms 348 KB Output is correct
53 Correct 232 ms 728 KB Output is correct
54 Correct 232 ms 1104 KB Output is correct
55 Correct 231 ms 596 KB Output is correct
56 Correct 238 ms 596 KB Output is correct
57 Correct 249 ms 908 KB Output is correct
58 Correct 239 ms 596 KB Output is correct
59 Correct 230 ms 520 KB Output is correct
60 Correct 232 ms 596 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 959 ms 348 KB Output is correct
2 Correct 917 ms 492 KB Output is correct
3 Correct 943 ms 500 KB Output is correct
4 Correct 912 ms 596 KB Output is correct
5 Correct 918 ms 596 KB Output is correct
6 Correct 919 ms 344 KB Output is correct
7 Correct 942 ms 496 KB Output is correct

Subtask #7
0 / 23.0

# 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 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 3 ms 348 KB Output is correct
8 Correct 4 ms 348 KB Output is correct
9 Correct 957 ms 592 KB Output is correct
10 Correct 4 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 2 ms 348 KB Output is correct
13 Correct 4 ms 348 KB Output is correct
14 Correct 4 ms 344 KB Output is correct
15 Correct 4 ms 348 KB Output is correct
16 Correct 6 ms 600 KB Output is correct
17 Correct 6 ms 348 KB Output is correct
18 Correct 918 ms 492 KB Output is correct
19 Correct 915 ms 500 KB Output is correct
20 Correct 946 ms 500 KB Output is correct
21 Correct 1 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 1 ms 344 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 344 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 1 ms 476 KB Output is correct
40 Correct 1 ms 348 KB Output is correct
41 Correct 1 ms 348 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 1 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 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 1 ms 348 KB Output is correct
51 Correct 1 ms 348 KB Output is correct
52 Correct 1 ms 344 KB Output is correct
53 Correct 1 ms 348 KB Output is correct
54 Correct 1 ms 348 KB Output is correct
55 Correct 1 ms 348 KB Output is correct
56 Correct 1 ms 348 KB Output is correct
57 Correct 1 ms 348 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 2 ms 512 KB Output is correct
61 Correct 3 ms 348 KB Output is correct
62 Correct 3 ms 348 KB Output is correct
63 Correct 23 ms 348 KB Output is correct
64 Correct 23 ms 348 KB Output is correct
65 Correct 105 ms 596 KB Output is correct
66 Correct 105 ms 592 KB Output is correct
67 Correct 232 ms 528 KB Output is correct
68 Correct 234 ms 596 KB Output is correct
69 Correct 432 ms 768 KB Output is correct
70 Correct 437 ms 1040 KB Output is correct
71 Correct 8 ms 344 KB Output is correct
72 Correct 8 ms 348 KB Output is correct
73 Correct 232 ms 728 KB Output is correct
74 Correct 232 ms 1104 KB Output is correct
75 Correct 231 ms 596 KB Output is correct
76 Correct 238 ms 596 KB Output is correct
77 Correct 249 ms 908 KB Output is correct
78 Correct 239 ms 596 KB Output is correct
79 Correct 230 ms 520 KB Output is correct
80 Correct 232 ms 596 KB Output is correct
81 Correct 959 ms 348 KB Output is correct
82 Correct 917 ms 492 KB Output is correct
83 Correct 943 ms 500 KB Output is correct
84 Correct 912 ms 596 KB Output is correct
85 Correct 918 ms 596 KB Output is correct
86 Correct 919 ms 344 KB Output is correct
87 Correct 942 ms 496 KB Output is correct
88 Correct 592 ms 492 KB Output is correct
89 Correct 535 ms 652 KB Output is correct
90 Execution timed out 2572 ms 848 KB Time limit exceeded
91 Halted 0 ms 0 KB -