oj.uz

Submission #806383

# Submission time Handle Problem Language Result Execution time Memory
806383 2023-08-04T06:26:10 Z vjudge1 Let's Win the Election (JOI22_ho_t3) C++17
28 / 100
 2500 ms 340 KB 
#ifdef Home
#define _GLIBCXX_DEBUG
#endif // Home

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;

int use[555], T, n, k;
vector < pair < int, int > > AB, A, B;

ld recur(int pos, int x, int y) { 
    if(x == y) {
        ld tmp = .0;
        for(int i = 0, j = k - x; i < n && j; ++ i) {
            if(!use[i]) {
                -- j;
                tmp += (ld)A[i].first / (ld)(x + 1);
            }
        }
   //   cout << pos << ' ' << x << ' ' << y << ' ' << tmp << '\n';
        return tmp;
    }
    ld tmp = 1e6;
    ++ y;
    for(int i = pos; i < (int)B.size() - x + y; ++ i) {
        use[B[i].second] = true;
        tmp = min(tmp, (ld)B[i].first / (ld)y + recur(i + 1, x, y));
        use[B[i].second] = false;
    }
  //cout << pos << ' ' << x << ' ' << y << ' ' << tmp << '\n';
    return tmp;
}

main() {
#ifdef Home
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif // Home
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    
    cin >> n >> k;
    AB.resize(n);
    A.resize(n);
    for(int i = 0; i < n; ++ i) {
        cin >> AB[i].first >> AB[i].second;
        A[i] = {AB[i].first, i};
    }
    sort(A.begin(), A.end());
    for(int i = 0; i < n; ++ i) {
        if(AB[A[i].second].second != -1) {
            B.push_back({AB[A[i].second].second, i});
        }
    }
    sort(B.begin(), B.end());
    ld ans = 1e6, tmp, c;
    for(int t = 0; t <= (int)B.size(); ++ t) {
        if(t == k) {
            break;
        }
   //   cout << t << " <<<<<<<<<<<<<<\n";
        ans = min(ans, recur(0, t, 0));
    //  cout << "<<<<<<<<<<<<<<<<\n\n\n\n\n";
    }
    cout << fixed << setprecision(15) << ans;
}

Compilation message

Main.cpp:38:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   38 | main() {
      | ^~~~
Main.cpp: In function 'int main()':
Main.cpp:60:19: warning: unused variable 'tmp' [-Wunused-variable]
   60 |     ld ans = 1e6, tmp, c;
      |                   ^~~
Main.cpp:60:24: warning: unused variable 'c' [-Wunused-variable]
   60 |     ld ans = 1e6, tmp, c;
      |                        ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Execution timed out 2560 ms 340 KB Time limit exceeded
13 Halted 0 ms 0 KB -

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 6 ms 212 KB Output is correct
18 Correct 2 ms 212 KB Output is correct
19 Correct 30 ms 316 KB Output is correct
20 Correct 3 ms 324 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 37 ms 212 KB Output is correct
23 Correct 4 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 96 ms 212 KB Output is correct
26 Correct 25 ms 212 KB Output is correct
27 Correct 34 ms 296 KB Output is correct
28 Correct 36 ms 212 KB Output is correct
29 Correct 28 ms 320 KB Output is correct
30 Correct 36 ms 212 KB Output is correct
31 Correct 35 ms 316 KB Output is correct
32 Correct 36 ms 300 KB Output is correct
33 Correct 28 ms 212 KB Output is correct
34 Correct 29 ms 320 KB Output is correct
35 Correct 44 ms 212 KB Output is correct
36 Correct 28 ms 324 KB Output is correct
37 Correct 34 ms 212 KB Output is correct
38 Correct 28 ms 300 KB Output is correct
39 Correct 33 ms 212 KB Output is correct
40 Correct 29 ms 316 KB Output is correct

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 6 ms 212 KB Output is correct
18 Correct 2 ms 212 KB Output is correct
19 Correct 30 ms 316 KB Output is correct
20 Correct 3 ms 324 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 37 ms 212 KB Output is correct
23 Correct 4 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 96 ms 212 KB Output is correct
26 Correct 25 ms 212 KB Output is correct
27 Correct 34 ms 296 KB Output is correct
28 Correct 36 ms 212 KB Output is correct
29 Correct 28 ms 320 KB Output is correct
30 Correct 36 ms 212 KB Output is correct
31 Correct 35 ms 316 KB Output is correct
32 Correct 36 ms 300 KB Output is correct
33 Correct 28 ms 212 KB Output is correct
34 Correct 29 ms 320 KB Output is correct
35 Correct 44 ms 212 KB Output is correct
36 Correct 28 ms 324 KB Output is correct
37 Correct 34 ms 212 KB Output is correct
38 Correct 28 ms 300 KB Output is correct
39 Correct 33 ms 212 KB Output is correct
40 Correct 29 ms 316 KB Output is correct
41 Execution timed out 2564 ms 212 KB Time limit exceeded
42 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2561 ms 212 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Execution timed out 2560 ms 340 KB Time limit exceeded
13 Halted 0 ms 0 KB -