oj.uz

Submission #795739

# Submission time Handle Problem Language Result Execution time Memory
795739 2023-07-27T14:00:14 Z 1bin Let's Win the Election (JOI22_ho_t3) C++14
100 / 100
 126 ms 2384 KB 
#include <bits/stdc++.h>

using namespace std;

#define all(v) v.begin(), v.end()
typedef long long ll;
const int NMAX = 1e5 + 5;
const int inf = 1e6;
const double eps = 1e-10;
int n, k, a, b;
double dp[505][505];
vector<pair<int, int>> v;

double solve(int x){
    double ret = 0;
    for(int i = 0; i <= n; i++)
        for(int j = 0; j <= n; j++) dp[i][j] = 1e9;
    dp[0][0] = 0;
    for(int i = 0; i < n; i++){
        auto&[b, a] = v[i];
        for(int j = 0; j <= min(k - x, i); j++){
            dp[i + 1][j + 1] = min(dp[i + 1][j + 1], dp[i][j] + 1.0 * a / (x + 1));
            if(i - j < x) dp[i + 1][j] = min(dp[i + 1][j], dp[i][j] + 1.0 * b / (i - j + 1));
            else dp[i + 1][j] = min(dp[i + 1][j], dp[i][j]);
        }
    }
    return dp[n][k - x];
}

int main(void){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    cin >> n >> k;
    for(int i = 0; i < n; i++){
        cin >> a >> b;
        if(b == -1) b = inf;
        v.emplace_back(b, a);
    }
    sort(all(v));
    double ans = inf;
    for(int i = 0; i <= k; i++) ans = min(ans, solve(i));
    cout << fixed << setprecision(10) << ans;
    return 0;
}

Compilation message

Main.cpp: In function 'double solve(int)':
Main.cpp:20:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   20 |         auto&[b, a] = v[i];
      |              ^
Main.cpp:15:12: warning: unused variable 'ret' [-Wunused-variable]
   15 |     double ret = 0;
      |            ^~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 7 ms 2312 KB Output is correct
6 Correct 16 ms 2260 KB Output is correct
7 Correct 37 ms 2260 KB Output is correct
8 Correct 63 ms 2288 KB Output is correct
9 Correct 108 ms 2292 KB Output is correct
10 Correct 65 ms 2288 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 7 ms 2312 KB Output is correct
6 Correct 16 ms 2260 KB Output is correct
7 Correct 37 ms 2260 KB Output is correct
8 Correct 63 ms 2288 KB Output is correct
9 Correct 108 ms 2292 KB Output is correct
10 Correct 65 ms 2288 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 19 ms 2308 KB Output is correct
13 Correct 20 ms 2316 KB Output is correct
14 Correct 19 ms 2260 KB Output is correct
15 Correct 71 ms 2292 KB Output is correct
16 Correct 58 ms 2260 KB Output is correct
17 Correct 58 ms 2292 KB Output is correct
18 Correct 98 ms 2260 KB Output is correct
19 Correct 96 ms 2288 KB Output is correct
20 Correct 96 ms 2292 KB Output is correct

Subtask #3
11.0 / 11.0

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

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 280 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 324 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 336 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 0 ms 340 KB Output is correct
29 Correct 1 ms 324 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 328 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 324 KB Output is correct
38 Correct 0 ms 340 KB Output is correct
39 Correct 0 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 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 280 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 324 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 336 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 0 ms 340 KB Output is correct
29 Correct 1 ms 324 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 328 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 324 KB Output is correct
38 Correct 0 ms 340 KB Output is correct
39 Correct 0 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 768 KB Output is correct
42 Correct 1 ms 724 KB Output is correct
43 Correct 1 ms 724 KB Output is correct
44 Correct 1 ms 724 KB Output is correct
45 Correct 1 ms 724 KB Output is correct
46 Correct 1 ms 724 KB Output is correct
47 Correct 1 ms 724 KB Output is correct
48 Correct 1 ms 596 KB Output is correct
49 Correct 1 ms 712 KB Output is correct
50 Correct 1 ms 724 KB Output is correct
51 Correct 1 ms 724 KB Output is correct
52 Correct 1 ms 724 KB Output is correct
53 Correct 1 ms 724 KB Output is correct
54 Correct 1 ms 712 KB Output is correct
55 Correct 1 ms 724 KB Output is correct
56 Correct 1 ms 724 KB Output is correct
57 Correct 1 ms 724 KB Output is correct
58 Correct 1 ms 724 KB Output is correct
59 Correct 1 ms 724 KB Output is correct
60 Correct 1 ms 712 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 98 ms 2292 KB Output is correct
2 Correct 95 ms 2292 KB Output is correct
3 Correct 96 ms 2292 KB Output is correct
4 Correct 96 ms 2288 KB Output is correct
5 Correct 95 ms 2292 KB Output is correct
6 Correct 126 ms 2288 KB Output is correct
7 Correct 97 ms 2288 KB Output is correct

Subtask #7
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 7 ms 2312 KB Output is correct
6 Correct 16 ms 2260 KB Output is correct
7 Correct 37 ms 2260 KB Output is correct
8 Correct 63 ms 2288 KB Output is correct
9 Correct 108 ms 2292 KB Output is correct
10 Correct 65 ms 2288 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 19 ms 2308 KB Output is correct
13 Correct 20 ms 2316 KB Output is correct
14 Correct 19 ms 2260 KB Output is correct
15 Correct 71 ms 2292 KB Output is correct
16 Correct 58 ms 2260 KB Output is correct
17 Correct 58 ms 2292 KB Output is correct
18 Correct 98 ms 2260 KB Output is correct
19 Correct 96 ms 2288 KB Output is correct
20 Correct 96 ms 2292 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 0 ms 340 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 0 ms 340 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 0 ms 340 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Correct 0 ms 340 KB Output is correct
37 Correct 0 ms 340 KB Output is correct
38 Correct 1 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 280 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 324 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 336 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 0 ms 340 KB Output is correct
49 Correct 1 ms 324 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 328 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 0 ms 340 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 1 ms 324 KB Output is correct
58 Correct 0 ms 340 KB Output is correct
59 Correct 0 ms 340 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 1 ms 768 KB Output is correct
62 Correct 1 ms 724 KB Output is correct
63 Correct 1 ms 724 KB Output is correct
64 Correct 1 ms 724 KB Output is correct
65 Correct 1 ms 724 KB Output is correct
66 Correct 1 ms 724 KB Output is correct
67 Correct 1 ms 724 KB Output is correct
68 Correct 1 ms 596 KB Output is correct
69 Correct 1 ms 712 KB Output is correct
70 Correct 1 ms 724 KB Output is correct
71 Correct 1 ms 724 KB Output is correct
72 Correct 1 ms 724 KB Output is correct
73 Correct 1 ms 724 KB Output is correct
74 Correct 1 ms 712 KB Output is correct
75 Correct 1 ms 724 KB Output is correct
76 Correct 1 ms 724 KB Output is correct
77 Correct 1 ms 724 KB Output is correct
78 Correct 1 ms 724 KB Output is correct
79 Correct 1 ms 724 KB Output is correct
80 Correct 1 ms 712 KB Output is correct
81 Correct 98 ms 2292 KB Output is correct
82 Correct 95 ms 2292 KB Output is correct
83 Correct 96 ms 2292 KB Output is correct
84 Correct 96 ms 2288 KB Output is correct
85 Correct 95 ms 2292 KB Output is correct
86 Correct 126 ms 2288 KB Output is correct
87 Correct 97 ms 2288 KB Output is correct
88 Correct 6 ms 2260 KB Output is correct
89 Correct 6 ms 2252 KB Output is correct
90 Correct 16 ms 2264 KB Output is correct
91 Correct 15 ms 2252 KB Output is correct
92 Correct 36 ms 2264 KB Output is correct
93 Correct 37 ms 2264 KB Output is correct
94 Correct 63 ms 2292 KB Output is correct
95 Correct 64 ms 2296 KB Output is correct
96 Correct 82 ms 2296 KB Output is correct
97 Correct 83 ms 2300 KB Output is correct
98 Correct 72 ms 2260 KB Output is correct
99 Correct 58 ms 2296 KB Output is correct
100 Correct 61 ms 2384 KB Output is correct
101 Correct 70 ms 2260 KB Output is correct
102 Correct 58 ms 2260 KB Output is correct
103 Correct 58 ms 2292 KB Output is correct
104 Correct 58 ms 2296 KB Output is correct
105 Correct 59 ms 2300 KB Output is correct