oj.uz

Submission #526875

# Submission time Handle Problem Language Result Execution time Memory
526875 2022-02-16T13:20:35 Z eecs Let's Win the Election (JOI22_ho_t3) C++17
100 / 100
 914 ms 2376 KB 
#include <bits/stdc++.h>
using namespace std;

const int maxn = 510;
int n, K, b;
double f[maxn][maxn];
array<int, 2> a[maxn];

void chk(double &x, double y) {
    if (x > y) x = y;
}

int main() {
    scanf("%d %d", &n, &K);
    for (int i = 1; i <= n; i++) {
        scanf("%d %d", &a[i][1], &a[i][0]);
        if (~a[i][0]) b++;
    }
    sort(a + 1, a + n + 1);
    auto calc = [&](int num) {
        for (int i = 0; i <= n; i++) {
            fill(f[i], f[i] + n + 1, 1e18);
        }
        f[0][0] = 0;
        for (int i = 0; i < n; i++) {
            for (int j = min(i, num); ~j; j--) {
                for (int k = i - j; ~k; k--) {
                    if (~a[i + 1][0]) chk(f[j + 1][k], f[j][k] + 1.0 * a[i + 1][0] / (j + 1));
                    chk(f[j][k + 1], f[j][k] + 1.0 * a[i + 1][1] / (num + 1));
                }
            }
        }
        return f[num][K - num];
    };
    int l = 0, r = min(b, K);
    while (l < r) {
        int mid = (l + r) / 2;
        calc(mid) > calc(mid + 1) ? l = mid + 1 : r = mid;
    }
    printf("%.9f\n", calc(l));
    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:14:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     scanf("%d %d", &n, &K);
      |     ~~~~~^~~~~~~~~~~~~~~~~
Main.cpp:16:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |         scanf("%d %d", &a[i][1], &a[i][0]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 2 ms 2252 KB Output is correct
6 Correct 1 ms 2252 KB Output is correct
7 Correct 2 ms 2252 KB Output is correct
8 Correct 2 ms 2252 KB Output is correct
9 Correct 2 ms 2252 KB Output is correct
10 Correct 1 ms 2252 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 2 ms 2252 KB Output is correct
6 Correct 1 ms 2252 KB Output is correct
7 Correct 2 ms 2252 KB Output is correct
8 Correct 2 ms 2252 KB Output is correct
9 Correct 2 ms 2252 KB Output is correct
10 Correct 1 ms 2252 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 425 ms 2252 KB Output is correct
13 Correct 341 ms 2276 KB Output is correct
14 Correct 114 ms 2280 KB Output is correct
15 Correct 772 ms 2252 KB Output is correct
16 Correct 625 ms 2252 KB Output is correct
17 Correct 196 ms 2276 KB Output is correct
18 Correct 901 ms 2288 KB Output is correct
19 Correct 708 ms 2252 KB Output is correct
20 Correct 186 ms 2276 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 1 ms 332 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 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 0 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 0 ms 332 KB Output is correct
31 Correct 0 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 0 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 0 ms 332 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 1 ms 332 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 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 0 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 0 ms 332 KB Output is correct
31 Correct 0 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 0 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 0 ms 332 KB Output is correct
41 Correct 1 ms 588 KB Output is correct
42 Correct 2 ms 588 KB Output is correct
43 Correct 2 ms 588 KB Output is correct
44 Correct 3 ms 588 KB Output is correct
45 Correct 4 ms 588 KB Output is correct
46 Correct 3 ms 588 KB Output is correct
47 Correct 4 ms 588 KB Output is correct
48 Correct 5 ms 588 KB Output is correct
49 Correct 5 ms 588 KB Output is correct
50 Correct 5 ms 588 KB Output is correct
51 Correct 6 ms 588 KB Output is correct
52 Correct 6 ms 700 KB Output is correct
53 Correct 3 ms 588 KB Output is correct
54 Correct 4 ms 588 KB Output is correct
55 Correct 6 ms 696 KB Output is correct
56 Correct 3 ms 588 KB Output is correct
57 Correct 6 ms 700 KB Output is correct
58 Correct 5 ms 700 KB Output is correct
59 Correct 5 ms 588 KB Output is correct
60 Correct 5 ms 588 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 851 ms 2276 KB Output is correct
2 Correct 861 ms 2276 KB Output is correct
3 Correct 870 ms 2372 KB Output is correct
4 Correct 914 ms 2276 KB Output is correct
5 Correct 903 ms 2372 KB Output is correct
6 Correct 730 ms 2372 KB Output is correct
7 Correct 906 ms 2272 KB Output is correct

Subtask #7
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 2 ms 2252 KB Output is correct
6 Correct 1 ms 2252 KB Output is correct
7 Correct 2 ms 2252 KB Output is correct
8 Correct 2 ms 2252 KB Output is correct
9 Correct 2 ms 2252 KB Output is correct
10 Correct 1 ms 2252 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 425 ms 2252 KB Output is correct
13 Correct 341 ms 2276 KB Output is correct
14 Correct 114 ms 2280 KB Output is correct
15 Correct 772 ms 2252 KB Output is correct
16 Correct 625 ms 2252 KB Output is correct
17 Correct 196 ms 2276 KB Output is correct
18 Correct 901 ms 2288 KB Output is correct
19 Correct 708 ms 2252 KB Output is correct
20 Correct 186 ms 2276 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 0 ms 332 KB Output is correct
23 Correct 0 ms 332 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 0 ms 332 KB Output is correct
26 Correct 0 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 0 ms 332 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 0 ms 332 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 0 ms 332 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 0 ms 332 KB Output is correct
37 Correct 0 ms 332 KB Output is correct
38 Correct 1 ms 332 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 332 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 0 ms 332 KB Output is correct
45 Correct 1 ms 332 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 0 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 0 ms 332 KB Output is correct
51 Correct 0 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 0 ms 332 KB Output is correct
58 Correct 1 ms 332 KB Output is correct
59 Correct 1 ms 332 KB Output is correct
60 Correct 0 ms 332 KB Output is correct
61 Correct 1 ms 588 KB Output is correct
62 Correct 2 ms 588 KB Output is correct
63 Correct 2 ms 588 KB Output is correct
64 Correct 3 ms 588 KB Output is correct
65 Correct 4 ms 588 KB Output is correct
66 Correct 3 ms 588 KB Output is correct
67 Correct 4 ms 588 KB Output is correct
68 Correct 5 ms 588 KB Output is correct
69 Correct 5 ms 588 KB Output is correct
70 Correct 5 ms 588 KB Output is correct
71 Correct 6 ms 588 KB Output is correct
72 Correct 6 ms 700 KB Output is correct
73 Correct 3 ms 588 KB Output is correct
74 Correct 4 ms 588 KB Output is correct
75 Correct 6 ms 696 KB Output is correct
76 Correct 3 ms 588 KB Output is correct
77 Correct 6 ms 700 KB Output is correct
78 Correct 5 ms 700 KB Output is correct
79 Correct 5 ms 588 KB Output is correct
80 Correct 5 ms 588 KB Output is correct
81 Correct 851 ms 2276 KB Output is correct
82 Correct 861 ms 2276 KB Output is correct
83 Correct 870 ms 2372 KB Output is correct
84 Correct 914 ms 2276 KB Output is correct
85 Correct 903 ms 2372 KB Output is correct
86 Correct 730 ms 2372 KB Output is correct
87 Correct 906 ms 2272 KB Output is correct
88 Correct 46 ms 2252 KB Output is correct
89 Correct 137 ms 2276 KB Output is correct
90 Correct 166 ms 2332 KB Output is correct
91 Correct 331 ms 2252 KB Output is correct
92 Correct 355 ms 2272 KB Output is correct
93 Correct 628 ms 2272 KB Output is correct
94 Correct 610 ms 2372 KB Output is correct
95 Correct 844 ms 2272 KB Output is correct
96 Correct 801 ms 2372 KB Output is correct
97 Correct 887 ms 2372 KB Output is correct
98 Correct 417 ms 2276 KB Output is correct
99 Correct 256 ms 2372 KB Output is correct
100 Correct 524 ms 2280 KB Output is correct
101 Correct 673 ms 2288 KB Output is correct
102 Correct 820 ms 2376 KB Output is correct
103 Correct 838 ms 2276 KB Output is correct
104 Correct 772 ms 2276 KB Output is correct
105 Correct 170 ms 2252 KB Output is correct