oj.uz

Submission #821612

# Submission time Handle Problem Language Result Execution time Memory
821612 2023-08-11T12:05:27 Z LittleCube Let's Win the Election (JOI22_ho_t3) C++17
100 / 100
 696 ms 2252 KB 
#pragma GCC optimize("Ofast,unroll-loops")
#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define F first
#define S second
using namespace std;

ll N, K, mxC;
double ans = 1e15, dp[505][505], res[505];
pll A[505];

double calc(int i)
{
    for (int k = i; k >= 0; k--)
        for (int l = K - i; l >= 0; l--)
            dp[k][l] = 1e15;
    dp[0][0] = 0;
    for (int j = 1; j <= N; j++)
        for (int k = i; k >= 0; k--)
            for (int l = K - i; l >= 0; l--)
            {
                if (k > 0)
                    dp[k][l] = min(dp[k][l], dp[k - 1][l] + double(A[j].S) / double(k));
                if (l > 0)
                    dp[k][l] = min(dp[k][l], dp[k][l - 1] + double(A[j].F) / double(i + 1));
            }
    return dp[i][K - i];
}

signed main()
{
    cin >> N >> K;
    mxC = N;
    for (int i = 1; i <= N; i++)
    {
        cin >> A[i].F >> A[i].S;
        if (A[i].S == -1)
            mxC--, A[i].S = 1e15;
    }
    sort(A + 1, A + 1 + N, [&](pll p1, pll p2)
         { return pll{p1.S, p1.F} < pll{p2.S, p2.F}; });
    int L = 0, R = min(K, mxC);
    int lmid = floor(L * 0.618 + R * 0.382), rmid = floor(L * 0.382 + R * 0.618);
    while (R - L > 9)
    {

        double lans = calc(lmid), rans = calc(rmid);
        if (lans <= rans)
        {
            R = rmid;
            rmid = lmid;
            lmid = floor(L * 0.618 + R * 0.382);
        }
        else
        {
            L = lmid;
            lmid = rmid;
            rmid = floor(L * 0.382 + R * 0.618);
        }
    }
    for (int i = L; i <= R; i++)
        ans = min(ans, calc(i));
    cout << fixed << setprecision(10) << ans << '\n';
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 23 ms 900 KB Output is correct
13 Correct 51 ms 752 KB Output is correct
14 Correct 41 ms 592 KB Output is correct
15 Correct 104 ms 1676 KB Output is correct
16 Correct 297 ms 1288 KB Output is correct
17 Correct 180 ms 660 KB Output is correct
18 Correct 197 ms 2252 KB Output is correct
19 Correct 595 ms 1472 KB Output is correct
20 Correct 253 ms 660 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 308 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 308 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 308 KB Output is correct
17 Correct 0 ms 312 KB Output is correct
18 Correct 0 ms 304 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 308 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 0 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 304 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 0 ms 340 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Correct 0 ms 308 KB Output is correct
37 Correct 0 ms 340 KB Output is correct
38 Correct 0 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 308 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 308 KB Output is correct
17 Correct 0 ms 312 KB Output is correct
18 Correct 0 ms 304 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 308 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 0 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 304 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 0 ms 340 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Correct 0 ms 308 KB Output is correct
37 Correct 0 ms 340 KB Output is correct
38 Correct 0 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 468 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 3 ms 468 KB Output is correct
48 Correct 2 ms 440 KB Output is correct
49 Correct 3 ms 468 KB Output is correct
50 Correct 4 ms 468 KB Output is correct
51 Correct 5 ms 596 KB Output is correct
52 Correct 4 ms 596 KB Output is correct
53 Correct 1 ms 468 KB Output is correct
54 Correct 2 ms 468 KB Output is correct
55 Correct 2 ms 468 KB Output is correct
56 Correct 2 ms 468 KB Output is correct
57 Correct 2 ms 468 KB Output is correct
58 Correct 2 ms 436 KB Output is correct
59 Correct 2 ms 468 KB Output is correct
60 Correct 2 ms 468 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 655 ms 1776 KB Output is correct
2 Correct 675 ms 1804 KB Output is correct
3 Correct 554 ms 1988 KB Output is correct
4 Correct 505 ms 1936 KB Output is correct
5 Correct 397 ms 2096 KB Output is correct
6 Correct 696 ms 1516 KB Output is correct
7 Correct 342 ms 2088 KB Output is correct

Subtask #7
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 23 ms 900 KB Output is correct
13 Correct 51 ms 752 KB Output is correct
14 Correct 41 ms 592 KB Output is correct
15 Correct 104 ms 1676 KB Output is correct
16 Correct 297 ms 1288 KB Output is correct
17 Correct 180 ms 660 KB Output is correct
18 Correct 197 ms 2252 KB Output is correct
19 Correct 595 ms 1472 KB Output is correct
20 Correct 253 ms 660 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 1 ms 312 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 308 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 0 ms 308 KB Output is correct
37 Correct 0 ms 312 KB Output is correct
38 Correct 0 ms 304 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 0 ms 340 KB Output is correct
41 Correct 0 ms 340 KB Output is correct
42 Correct 0 ms 340 KB Output is correct
43 Correct 0 ms 340 KB Output is correct
44 Correct 0 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 308 KB Output is correct
47 Correct 0 ms 340 KB Output is correct
48 Correct 0 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 304 KB Output is correct
51 Correct 0 ms 340 KB Output is correct
52 Correct 0 ms 340 KB Output is correct
53 Correct 0 ms 340 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 0 ms 340 KB Output is correct
56 Correct 0 ms 308 KB Output is correct
57 Correct 0 ms 340 KB Output is correct
58 Correct 0 ms 340 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 1 ms 340 KB Output is correct
62 Correct 1 ms 340 KB Output is correct
63 Correct 1 ms 340 KB Output is correct
64 Correct 1 ms 340 KB Output is correct
65 Correct 1 ms 468 KB Output is correct
66 Correct 1 ms 340 KB Output is correct
67 Correct 3 ms 468 KB Output is correct
68 Correct 2 ms 440 KB Output is correct
69 Correct 3 ms 468 KB Output is correct
70 Correct 4 ms 468 KB Output is correct
71 Correct 5 ms 596 KB Output is correct
72 Correct 4 ms 596 KB Output is correct
73 Correct 1 ms 468 KB Output is correct
74 Correct 2 ms 468 KB Output is correct
75 Correct 2 ms 468 KB Output is correct
76 Correct 2 ms 468 KB Output is correct
77 Correct 2 ms 468 KB Output is correct
78 Correct 2 ms 436 KB Output is correct
79 Correct 2 ms 468 KB Output is correct
80 Correct 2 ms 468 KB Output is correct
81 Correct 655 ms 1776 KB Output is correct
82 Correct 675 ms 1804 KB Output is correct
83 Correct 554 ms 1988 KB Output is correct
84 Correct 505 ms 1936 KB Output is correct
85 Correct 397 ms 2096 KB Output is correct
86 Correct 696 ms 1516 KB Output is correct
87 Correct 342 ms 2088 KB Output is correct
88 Correct 3 ms 340 KB Output is correct
89 Correct 4 ms 468 KB Output is correct
90 Correct 26 ms 600 KB Output is correct
91 Correct 24 ms 696 KB Output is correct
92 Correct 130 ms 908 KB Output is correct
93 Correct 110 ms 1136 KB Output is correct
94 Correct 346 ms 1212 KB Output is correct
95 Correct 268 ms 1560 KB Output is correct
96 Correct 523 ms 1652 KB Output is correct
97 Correct 393 ms 1768 KB Output is correct
98 Correct 238 ms 1152 KB Output is correct
99 Correct 149 ms 1148 KB Output is correct
100 Correct 276 ms 1148 KB Output is correct
101 Correct 285 ms 1352 KB Output is correct
102 Correct 242 ms 1476 KB Output is correct
103 Correct 203 ms 1552 KB Output is correct
104 Correct 276 ms 1356 KB Output is correct
105 Correct 92 ms 1108 KB Output is correct