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답안 #941192

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
941192 2024-03-08T09:19:45 Z peterandvoi Let's Win the Election (JOI22_ho_t3) C++17
32 / 100
 129 ms 2448 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<double, double> 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(9);
    cin >> n >> k;
    for (int i = 1; i <= n; ++i) {
        cin >> a[i].first >> a[i].second;
        a[i].second = a[i].second == -1 ? 1001 : a[i].second;
    }
    sort(a + 1, a + n + 1, [&](auto x, auto y) {
        return x.second < y.second;
    });
    int l = 1, r = n;
    double res = 1e9;
    for (int i = 1; i <= n; ++i) {
        r -= a[i].second == 1001;
    }
    r = min(r, k);
    for (int i = 0; i <= r; ++i) {
        res = min(res, get(i));
    }
    cout << res;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:52:9: warning: unused variable 'l' [-Wunused-variable]
   52 |     int l = 1, r = n;
      |         ^

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 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 2 ms 2392 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 2 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 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 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 2 ms 2392 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 2 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 12 ms 2440 KB Output is correct
13 Correct 13 ms 2396 KB Output is correct
14 Correct 11 ms 2444 KB Output is correct
15 Correct 64 ms 2420 KB Output is correct
16 Correct 58 ms 2396 KB Output is correct
17 Correct 24 ms 2448 KB Output is correct
18 Correct 120 ms 2396 KB Output is correct
19 Correct 93 ms 2396 KB Output is correct
20 Correct 29 ms 2392 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 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 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 0 ms 348 KB Output is correct
10 Correct 0 ms 408 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 344 KB Output is correct

Subtask #4
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 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 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 0 ms 348 KB Output is correct
10 Correct 0 ms 408 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Incorrect 0 ms 348 KB Output isn't correct
27 Halted 0 ms 0 KB -

Subtask #5
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 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 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 0 ms 348 KB Output is correct
10 Correct 0 ms 408 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Incorrect 0 ms 348 KB Output isn't correct
27 Halted 0 ms 0 KB -

Subtask #6
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 126 ms 2396 KB Output is correct
2 Correct 120 ms 2396 KB Output is correct
3 Correct 120 ms 2424 KB Output is correct
4 Correct 123 ms 2396 KB Output is correct
5 Correct 122 ms 2392 KB Output is correct
6 Correct 129 ms 2420 KB Output is correct
7 Correct 120 ms 2396 KB Output is correct

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 2 ms 2392 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 2 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 12 ms 2440 KB Output is correct
13 Correct 13 ms 2396 KB Output is correct
14 Correct 11 ms 2444 KB Output is correct
15 Correct 64 ms 2420 KB Output is correct
16 Correct 58 ms 2396 KB Output is correct
17 Correct 24 ms 2448 KB Output is correct
18 Correct 120 ms 2396 KB Output is correct
19 Correct 93 ms 2396 KB Output is correct
20 Correct 29 ms 2392 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 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 0 ms 348 KB Output is correct
30 Correct 0 ms 408 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 344 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 344 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 1 ms 348 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Incorrect 0 ms 348 KB Output isn't correct
47 Halted 0 ms 0 KB -