oj.uz

Submission #533347

# Submission time Handle Problem Language Result Execution time Memory
533347 2022-03-05T15:04:14 Z arnold518 Let's Win the Election (JOI22_ho_t3) C++17
100 / 100
 139 ms 3288 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 500;

int N, K;
pii A[MAXN+10];

int sum[MAXN+10][MAXN+10];
double dp[MAXN+10][MAXN+10];

int main()
{
	scanf("%d%d", &N, &K);
	for(int i=1; i<=N; i++)
	{
		scanf("%d%d", &A[i].first, &A[i].second);
		if(A[i].second==-1) A[i].second=9876543;
	}
	sort(A+1, A+N+1, [&](const pii &p, const pii &q)
		{
			if(p.second!=q.second) return p.second<q.second;
			return p.first>q.first;
		});

	for(int i=0; i<=N; i++)
	{
		vector<int> V;
		for(int j=i+1; j<=N; j++) V.push_back(A[j].first);
		sort(V.begin(), V.end());
		for(int j=1; j<=V.size(); j++)
		{
			sum[i][j]=sum[i][j-1]+V[j-1];
		}
	}

	double ans=987654321;

	for(int i=0; i<=K; i++)
	{
		dp[0][0]=0;
		for(int k=1; k<=i; k++) dp[0][k]=987654321;
		ans=min(ans, dp[0][i]+(double)sum[0][K]/(i+1));
		for(int j=1; j<=K; j++)
		{
			dp[j][0]=dp[j-1][0]+(double)A[j].first/(i+1);
			for(int k=1; k<=i; k++)
			{
				dp[j][k]=min(dp[j-1][k]+(double)A[j].first/(i+1), dp[j-1][k-1]+(double)A[j].second/k);
			} 
			if(j<=K)
			{
				ans=min(ans, dp[j][i]+(double)sum[j][K-j]/(i+1));
			}
		}
	}
	printf("%.20f\n", ans);
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:35:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |   for(int j=1; j<=V.size(); j++)
      |                ~^~~~~~~~~~
Main.cpp:18:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |  scanf("%d%d", &N, &K);
      |  ~~~~~^~~~~~~~~~~~~~~~
Main.cpp:21:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |   scanf("%d%d", &A[i].first, &A[i].second);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 280 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 3 ms 1484 KB Output is correct
6 Correct 5 ms 1712 KB Output is correct
7 Correct 17 ms 2308 KB Output is correct
8 Correct 46 ms 2764 KB Output is correct
9 Correct 115 ms 3288 KB Output is correct
10 Correct 49 ms 2688 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 280 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 3 ms 1484 KB Output is correct
6 Correct 5 ms 1712 KB Output is correct
7 Correct 17 ms 2308 KB Output is correct
8 Correct 46 ms 2764 KB Output is correct
9 Correct 115 ms 3288 KB Output is correct
10 Correct 49 ms 2688 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 8 ms 1864 KB Output is correct
13 Correct 11 ms 1836 KB Output is correct
14 Correct 9 ms 1868 KB Output is correct
15 Correct 51 ms 2700 KB Output is correct
16 Correct 42 ms 2600 KB Output is correct
17 Correct 43 ms 2636 KB Output is correct
18 Correct 122 ms 3284 KB Output is correct
19 Correct 127 ms 3284 KB Output is correct
20 Correct 109 ms 3244 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 352 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 300 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 352 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 300 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 300 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 300 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 300 KB Output is correct
22 Correct 1 ms 292 KB Output is correct
23 Correct 1 ms 300 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 360 KB Output is correct
26 Correct 1 ms 432 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 300 KB Output is correct
39 Correct 1 ms 300 KB Output is correct
40 Correct 1 ms 300 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 352 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 300 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 300 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 300 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 300 KB Output is correct
22 Correct 1 ms 292 KB Output is correct
23 Correct 1 ms 300 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 360 KB Output is correct
26 Correct 1 ms 432 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 300 KB Output is correct
39 Correct 1 ms 300 KB Output is correct
40 Correct 1 ms 300 KB Output is correct
41 Correct 1 ms 556 KB Output is correct
42 Correct 1 ms 460 KB Output is correct
43 Correct 1 ms 588 KB Output is correct
44 Correct 1 ms 588 KB Output is correct
45 Correct 1 ms 588 KB Output is correct
46 Correct 2 ms 592 KB Output is correct
47 Correct 2 ms 716 KB Output is correct
48 Correct 1 ms 716 KB Output is correct
49 Correct 2 ms 812 KB Output is correct
50 Correct 1 ms 720 KB Output is correct
51 Correct 2 ms 844 KB Output is correct
52 Correct 3 ms 844 KB Output is correct
53 Correct 2 ms 716 KB Output is correct
54 Correct 1 ms 716 KB Output is correct
55 Correct 2 ms 716 KB Output is correct
56 Correct 1 ms 716 KB Output is correct
57 Correct 1 ms 688 KB Output is correct
58 Correct 1 ms 716 KB Output is correct
59 Correct 1 ms 716 KB Output is correct
60 Correct 1 ms 716 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 130 ms 3280 KB Output is correct
2 Correct 139 ms 3280 KB Output is correct
3 Correct 109 ms 3272 KB Output is correct
4 Correct 113 ms 3280 KB Output is correct
5 Correct 123 ms 3276 KB Output is correct
6 Correct 125 ms 3288 KB Output is correct
7 Correct 111 ms 3276 KB Output is correct

Subtask #7
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 280 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 3 ms 1484 KB Output is correct
6 Correct 5 ms 1712 KB Output is correct
7 Correct 17 ms 2308 KB Output is correct
8 Correct 46 ms 2764 KB Output is correct
9 Correct 115 ms 3288 KB Output is correct
10 Correct 49 ms 2688 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 8 ms 1864 KB Output is correct
13 Correct 11 ms 1836 KB Output is correct
14 Correct 9 ms 1868 KB Output is correct
15 Correct 51 ms 2700 KB Output is correct
16 Correct 42 ms 2600 KB Output is correct
17 Correct 43 ms 2636 KB Output is correct
18 Correct 122 ms 3284 KB Output is correct
19 Correct 127 ms 3284 KB Output is correct
20 Correct 109 ms 3244 KB Output is correct
21 Correct 1 ms 296 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 300 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 352 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 300 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 300 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 300 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 300 KB Output is correct
42 Correct 1 ms 292 KB Output is correct
43 Correct 1 ms 300 KB Output is correct
44 Correct 1 ms 332 KB Output is correct
45 Correct 1 ms 360 KB Output is correct
46 Correct 1 ms 432 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 1 ms 332 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
54 Correct 1 ms 332 KB Output is correct
55 Correct 1 ms 332 KB Output is correct
56 Correct 1 ms 332 KB Output is correct
57 Correct 1 ms 332 KB Output is correct
58 Correct 1 ms 300 KB Output is correct
59 Correct 1 ms 300 KB Output is correct
60 Correct 1 ms 300 KB Output is correct
61 Correct 1 ms 556 KB Output is correct
62 Correct 1 ms 460 KB Output is correct
63 Correct 1 ms 588 KB Output is correct
64 Correct 1 ms 588 KB Output is correct
65 Correct 1 ms 588 KB Output is correct
66 Correct 2 ms 592 KB Output is correct
67 Correct 2 ms 716 KB Output is correct
68 Correct 1 ms 716 KB Output is correct
69 Correct 2 ms 812 KB Output is correct
70 Correct 1 ms 720 KB Output is correct
71 Correct 2 ms 844 KB Output is correct
72 Correct 3 ms 844 KB Output is correct
73 Correct 2 ms 716 KB Output is correct
74 Correct 1 ms 716 KB Output is correct
75 Correct 2 ms 716 KB Output is correct
76 Correct 1 ms 716 KB Output is correct
77 Correct 1 ms 688 KB Output is correct
78 Correct 1 ms 716 KB Output is correct
79 Correct 1 ms 716 KB Output is correct
80 Correct 1 ms 716 KB Output is correct
81 Correct 130 ms 3280 KB Output is correct
82 Correct 139 ms 3280 KB Output is correct
83 Correct 109 ms 3272 KB Output is correct
84 Correct 113 ms 3280 KB Output is correct
85 Correct 123 ms 3276 KB Output is correct
86 Correct 125 ms 3288 KB Output is correct
87 Correct 111 ms 3276 KB Output is correct
88 Correct 8 ms 1440 KB Output is correct
89 Correct 9 ms 1452 KB Output is correct
90 Correct 9 ms 1740 KB Output is correct
91 Correct 9 ms 1740 KB Output is correct
92 Correct 19 ms 2252 KB Output is correct
93 Correct 31 ms 2252 KB Output is correct
94 Correct 55 ms 2744 KB Output is correct
95 Correct 80 ms 2784 KB Output is correct
96 Correct 89 ms 3096 KB Output is correct
97 Correct 87 ms 3020 KB Output is correct
98 Correct 44 ms 2692 KB Output is correct
99 Correct 47 ms 2636 KB Output is correct
100 Correct 65 ms 2684 KB Output is correct
101 Correct 53 ms 2684 KB Output is correct
102 Correct 51 ms 2700 KB Output is correct
103 Correct 40 ms 2688 KB Output is correct
104 Correct 55 ms 2600 KB Output is correct
105 Correct 41 ms 2684 KB Output is correct