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답안 #941205

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
941205 2024-03-08T09:30:30 Z peterandvoi Let's Win the Election (JOI22_ho_t3) C++17
100 / 100
 7 ms 2648 KB 
#include <bits/stdc++.h>

using namespace std;

#ifdef ngu
#include "debug.h"
#else
#define debug(...) 42
#endif

const int N = 505;

int n, k;
double dp[N][N];
pair<int, int> a[N];

double get(int mid) {
    for (int i = 0; i <= n; ++i) {
        for (int j = 0; j <= k - mid; ++j) {
            dp[i][j] = 1e9;
        }
    }
    dp[0][0] = 0;
    for (int i = 1; i <= n; ++i) {
        for (int j = 0; j <= min(i, k - mid); ++j) {
            int x = i - j - 1;
            if (j > 0) {
                dp[i][j] = min(dp[i][j], dp[i - 1][j - 1] + 1.0 * a[i].first / (mid + 1));
            }
            dp[i][j] = min(dp[i][j], dp[i - 1][j] + (x < mid ? 1.0 * a[i].second / (x + 1) : 0));
        }
    }
    return dp[n][k - mid];
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    #ifdef ngu
    freopen("test.inp", "r", stdin);
    freopen("test.out", "w", stdout);
    #endif
    cout << fixed << setprecision(15);
    cin >> n >> k;
    for (int i = 1; i <= n; ++i) {
        cin >> a[i].first >> a[i].second;
        // wtf ?
        assert(a[i].second <= 1000);
        a[i].second = a[i].second == -1 ? 1e9 : a[i].second;
    }
    sort(a + 1, a + n + 1, [&](auto x, auto y) {
        return x.second < y.second;
    });
    int l = 1, r = n, res = 0;
    for (int i = 1; i <= n; ++i) {
        r -= a[i].second == 1e9;
    }
    r = min(r, k);
    while (l <= r) {
        int mid = l + r >> 1;
        if (get(mid - 1) >= get(mid)) {
            res = mid;
            l = mid + 1;
        } else {
            r = mid - 1;
        }
    }
    cout << get(res);
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:60:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   60 |         int mid = l + r >> 1;
      |                   ~~^~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 600 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2648 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 2 ms 2396 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 600 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2648 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 2 ms 2396 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 2 ms 2396 KB Output is correct
14 Correct 3 ms 2396 KB Output is correct
15 Correct 2 ms 2396 KB Output is correct
16 Correct 4 ms 2396 KB Output is correct
17 Correct 5 ms 2648 KB Output is correct
18 Correct 2 ms 2396 KB Output is correct
19 Correct 6 ms 2396 KB Output is correct
20 Correct 6 ms 2396 KB Output is correct

Subtask #3
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 600 KB Output is correct
15 Correct 1 ms 348 KB Output is correct

Subtask #4
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 600 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 800 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 348 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 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct

Subtask #5
33.0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 600 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 800 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 348 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 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 860 KB Output is correct
42 Correct 1 ms 860 KB Output is correct
43 Correct 1 ms 860 KB Output is correct
44 Correct 1 ms 860 KB Output is correct
45 Correct 1 ms 860 KB Output is correct
46 Correct 0 ms 860 KB Output is correct
47 Correct 1 ms 860 KB Output is correct
48 Correct 1 ms 604 KB Output is correct
49 Correct 1 ms 860 KB Output is correct
50 Correct 1 ms 1112 KB Output is correct
51 Correct 1 ms 860 KB Output is correct
52 Correct 1 ms 600 KB Output is correct
53 Correct 1 ms 604 KB Output is correct
54 Correct 1 ms 856 KB Output is correct
55 Correct 1 ms 604 KB Output is correct
56 Correct 1 ms 860 KB Output is correct
57 Correct 1 ms 604 KB Output is correct
58 Correct 0 ms 860 KB Output is correct
59 Correct 1 ms 860 KB Output is correct
60 Correct 1 ms 856 KB Output is correct

Subtask #6
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 2396 KB Output is correct
2 Correct 6 ms 2396 KB Output is correct
3 Correct 5 ms 2396 KB Output is correct
4 Correct 4 ms 2396 KB Output is correct
5 Correct 4 ms 2396 KB Output is correct
6 Correct 7 ms 2396 KB Output is correct
7 Correct 3 ms 2396 KB Output is correct

Subtask #7
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 600 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2648 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 2 ms 2396 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 2 ms 2396 KB Output is correct
14 Correct 3 ms 2396 KB Output is correct
15 Correct 2 ms 2396 KB Output is correct
16 Correct 4 ms 2396 KB Output is correct
17 Correct 5 ms 2648 KB Output is correct
18 Correct 2 ms 2396 KB Output is correct
19 Correct 6 ms 2396 KB Output is correct
20 Correct 6 ms 2396 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 600 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 0 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 0 ms 348 KB Output is correct
40 Correct 1 ms 344 KB Output is correct
41 Correct 1 ms 344 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 1 ms 800 KB Output is correct
45 Correct 0 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 0 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 0 ms 860 KB Output is correct
62 Correct 1 ms 860 KB Output is correct
63 Correct 1 ms 860 KB Output is correct
64 Correct 1 ms 860 KB Output is correct
65 Correct 1 ms 860 KB Output is correct
66 Correct 0 ms 860 KB Output is correct
67 Correct 1 ms 860 KB Output is correct
68 Correct 1 ms 604 KB Output is correct
69 Correct 1 ms 860 KB Output is correct
70 Correct 1 ms 1112 KB Output is correct
71 Correct 1 ms 860 KB Output is correct
72 Correct 1 ms 600 KB Output is correct
73 Correct 1 ms 604 KB Output is correct
74 Correct 1 ms 856 KB Output is correct
75 Correct 1 ms 604 KB Output is correct
76 Correct 1 ms 860 KB Output is correct
77 Correct 1 ms 604 KB Output is correct
78 Correct 0 ms 860 KB Output is correct
79 Correct 1 ms 860 KB Output is correct
80 Correct 1 ms 856 KB Output is correct
81 Correct 6 ms 2396 KB Output is correct
82 Correct 6 ms 2396 KB Output is correct
83 Correct 5 ms 2396 KB Output is correct
84 Correct 4 ms 2396 KB Output is correct
85 Correct 4 ms 2396 KB Output is correct
86 Correct 7 ms 2396 KB Output is correct
87 Correct 3 ms 2396 KB Output is correct
88 Correct 2 ms 2396 KB Output is correct
89 Correct 1 ms 2396 KB Output is correct
90 Correct 3 ms 2388 KB Output is correct
91 Correct 1 ms 2396 KB Output is correct
92 Correct 4 ms 2396 KB Output is correct
93 Correct 2 ms 2396 KB Output is correct
94 Correct 5 ms 2444 KB Output is correct
95 Correct 3 ms 2396 KB Output is correct
96 Correct 6 ms 2396 KB Output is correct
97 Correct 4 ms 2396 KB Output is correct
98 Correct 5 ms 2396 KB Output is correct
99 Correct 6 ms 2396 KB Output is correct
100 Correct 5 ms 2396 KB Output is correct
101 Correct 4 ms 2396 KB Output is correct
102 Correct 3 ms 2396 KB Output is correct
103 Correct 3 ms 2396 KB Output is correct
104 Correct 4 ms 2396 KB Output is correct
105 Correct 5 ms 2396 KB Output is correct