oj.uz

Submission #941183

# Submission time Handle Problem Language Result Execution time Memory
941183 2024-03-08T09:03:46 Z peterandvoi Let's Win the Election (JOI22_ho_t3) C++17
32 / 100
 130 ms 2644 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;
        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;
//    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:52:9: warning: unused variable 'l' [-Wunused-variable]
   52 |     int l = 1, r = n;
      |         ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 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 1 ms 2380 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 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

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 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 1 ms 2380 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 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 13 ms 2396 KB Output is correct
13 Correct 14 ms 2440 KB Output is correct
14 Correct 12 ms 2396 KB Output is correct
15 Correct 70 ms 2416 KB Output is correct
16 Correct 60 ms 2416 KB Output is correct
17 Correct 25 ms 2392 KB Output is correct
18 Correct 123 ms 2420 KB Output is correct
19 Correct 94 ms 2396 KB Output is correct
20 Correct 28 ms 2396 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 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 344 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 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 600 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 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 344 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 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 600 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 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 600 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 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

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 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 344 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 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 600 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 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 600 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 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

# Verdict Execution time Memory Grader output
1 Correct 122 ms 2420 KB Output is correct
2 Correct 122 ms 2392 KB Output is correct
3 Correct 130 ms 2644 KB Output is correct
4 Correct 121 ms 2396 KB Output is correct
5 Correct 121 ms 2392 KB Output is correct
6 Correct 120 ms 2396 KB Output is correct
7 Correct 123 ms 2644 KB Output is correct

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 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 1 ms 2380 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 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 13 ms 2396 KB Output is correct
13 Correct 14 ms 2440 KB Output is correct
14 Correct 12 ms 2396 KB Output is correct
15 Correct 70 ms 2416 KB Output is correct
16 Correct 60 ms 2416 KB Output is correct
17 Correct 25 ms 2392 KB Output is correct
18 Correct 123 ms 2420 KB Output is correct
19 Correct 94 ms 2396 KB Output is correct
20 Correct 28 ms 2396 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 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 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 344 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 1 ms 348 KB Output is correct
33 Correct 0 ms 600 KB Output is correct
34 Correct 0 ms 344 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 1 ms 600 KB Output is correct
42 Correct 1 ms 348 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 -