oj.uz

Submission #871093

# Submission time Handle Problem Language Result Execution time Memory
871093 2023-11-09T21:31:16 Z HorizonWest Let's Win the Election (JOI22_ho_t3) C++17
10 / 100
 728 ms 1002836 KB 
#include <bits/stdc++.h>
using namespace std;

#define endl '\n'
#define db double
#define ll __int128
#define int long long
#define pb push_back
#define fs first
#define sd second
#define Mod long(1e9 + 7)
#define all(x) x.begin(), x.end()
#define unvisited long(-1)
#define Eps double(1e-9)
#define _for(i, n) for(int i = 0; i < (n); i++)
#define dbg(x) cout << #x ": " << x << endl;

const int Max = 1e6 + 7, Inf = 1e9 + 7;

void print(bool x) { cout << (x ? "YES" : "NO") << endl; }

string tostring (__int128 x)
{
    string ans = "";
    while(x > 0)
    {
        ans += (x % 10 + '0');
        x /= 10;
    }
    reverse(all(ans));
    return ans;
}

void printdb(double ans, int k)
{
    cout << setiosflags(ios::fixed)
         << setiosflags(ios::showpoint)
         << setprecision(k) << ans << endl;
}

void solve()
{
    int n, m; cin >> n >> m; 
    vector <pair<int, int>> v(n); 
    for(auto& u : v) 
    {
        cin >> u.sd >> u.fs;
        if(u.fs == -1) u.fs = Inf;  
    } 
    sort(all(v)); 

    vector <vector<vector<db>>> dp(n + 2, vector <vector<db>> (
        m + 2, vector <db> (m + 2, Inf)
    )); 

    db ans = Inf; dp[0][1][0] = 0; 

    for(int i = 0; i < n; i++)
    {
        for(int j = 1; j <= m; j++)
        {
            for(int k = 0; k < m; k++)
            {
                dp[i+1][j][k] = min(dp[i+1][j][k], dp[i][j][k]);  
                dp[i+1][j][k+1] = min(dp[i+1][j][k+1], dp[i][j][k] + v[i].sd / db(j)); 
                if(v[i].fs != Inf)
                {
                    dp[i+1][j+1][k+1] = min(dp[i+1][j+1][k+1], dp[i][j][k] + v[i].fs / db(j)); 
                } 
            }
            ans = min(ans, dp[i+1][j][m]); 
        }
    }

    printdb(ans, 5); 
}

int32_t main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int Q = 1; //cin >> Q;

    while (Q--)
    {
        solve();
    }

    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory 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 348 KB Output is correct
5 Correct 7 ms 12124 KB Output is correct
6 Correct 33 ms 65884 KB Output is correct
7 Correct 150 ms 255712 KB Output is correct
8 Correct 354 ms 565840 KB Output is correct
9 Correct 706 ms 1002568 KB Output is correct
10 Correct 337 ms 495192 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory 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 348 KB Output is correct
5 Correct 7 ms 12124 KB Output is correct
6 Correct 33 ms 65884 KB Output is correct
7 Correct 150 ms 255712 KB Output is correct
8 Correct 354 ms 565840 KB Output is correct
9 Correct 706 ms 1002568 KB Output is correct
10 Correct 337 ms 495192 KB Output is correct
11 Correct 1 ms 352 KB Output is correct
12 Correct 69 ms 94240 KB Output is correct
13 Correct 58 ms 94296 KB Output is correct
14 Correct 60 ms 94432 KB Output is correct
15 Correct 345 ms 495260 KB Output is correct
16 Correct 293 ms 495256 KB Output is correct
17 Correct 322 ms 495252 KB Output is correct
18 Correct 728 ms 1002584 KB Output is correct
19 Correct 642 ms 1002576 KB Output is correct
20 Correct 565 ms 1002836 KB Output is correct

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 356 KB Output is correct
2 Correct 1 ms 356 KB Output is correct
3 Correct 0 ms 356 KB Output is correct
4 Correct 0 ms 472 KB Output is correct
5 Correct 0 ms 356 KB Output is correct
6 Correct 0 ms 360 KB Output is correct
7 Correct 1 ms 356 KB Output is correct
8 Correct 0 ms 356 KB Output is correct
9 Incorrect 0 ms 352 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 356 KB Output is correct
2 Correct 1 ms 356 KB Output is correct
3 Correct 0 ms 356 KB Output is correct
4 Correct 0 ms 472 KB Output is correct
5 Correct 0 ms 356 KB Output is correct
6 Correct 0 ms 360 KB Output is correct
7 Correct 1 ms 356 KB Output is correct
8 Correct 0 ms 356 KB Output is correct
9 Incorrect 0 ms 352 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 356 KB Output is correct
2 Correct 1 ms 356 KB Output is correct
3 Correct 0 ms 356 KB Output is correct
4 Correct 0 ms 472 KB Output is correct
5 Correct 0 ms 356 KB Output is correct
6 Correct 0 ms 360 KB Output is correct
7 Correct 1 ms 356 KB Output is correct
8 Correct 0 ms 356 KB Output is correct
9 Incorrect 0 ms 352 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 681 ms 1002460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory 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 348 KB Output is correct
5 Correct 7 ms 12124 KB Output is correct
6 Correct 33 ms 65884 KB Output is correct
7 Correct 150 ms 255712 KB Output is correct
8 Correct 354 ms 565840 KB Output is correct
9 Correct 706 ms 1002568 KB Output is correct
10 Correct 337 ms 495192 KB Output is correct
11 Correct 1 ms 352 KB Output is correct
12 Correct 69 ms 94240 KB Output is correct
13 Correct 58 ms 94296 KB Output is correct
14 Correct 60 ms 94432 KB Output is correct
15 Correct 345 ms 495260 KB Output is correct
16 Correct 293 ms 495256 KB Output is correct
17 Correct 322 ms 495252 KB Output is correct
18 Correct 728 ms 1002584 KB Output is correct
19 Correct 642 ms 1002576 KB Output is correct
20 Correct 565 ms 1002836 KB Output is correct
21 Correct 0 ms 356 KB Output is correct
22 Correct 1 ms 356 KB Output is correct
23 Correct 0 ms 356 KB Output is correct
24 Correct 0 ms 472 KB Output is correct
25 Correct 0 ms 356 KB Output is correct
26 Correct 0 ms 360 KB Output is correct
27 Correct 1 ms 356 KB Output is correct
28 Correct 0 ms 356 KB Output is correct
29 Incorrect 0 ms 352 KB Output isn't correct
30 Halted 0 ms 0 KB -