oj.uz

답안 #871927

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
871927 2023-11-11T21:30:18 Z HorizonWest Let's Win the Election (JOI22_ho_t3) C++17
66 / 100
 825 ms 1002600 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define endl '\n'
#define db double
#define ll __int128
#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;
}
 
pair <db, db> fmin(pair<db, db> a, pair <db, db> b, db j)
{
    if(db(a.fs + a.sd / j) < db(b.fs + b.sd / j))
        return a; 
    else   
        return b; 
}
 
int prec(vector <pair<db, db>> a, vector <pair<db, db>> b, int n, int m)
{
    vector <db> take(n, 1); db ans = Inf; 
 
    for(db i = 1; i <= m; i++)
    {
        db Z1 = 0.0, Z2 = b[i-1].fs / i; int cnt = i - 1;   //cerr << b[i-1].fs << endl; 
        
        for(int j = 0; j < n; j++)
        {
            //cerr << a[j].fs << " "; 
            if(cnt == m) break;
            Z1 += take[a[j].sd] * a[j].fs / i; 
            cnt += take[a[j].sd];
        } 
        
        cnt = i; take[b[i-1].sd] = 0;  
 
        for(int j = 0; j < n; j++)
        {
            if(cnt == m) break;
            Z2 += take[a[j].sd] * a[j].fs / (i + 1); 
            cnt += take[a[j].sd]; 
        }
 
        //cerr << Z1 << " " << Z2 << endl; 
 
        if(Z1 <= Z2) return i; 
    }
 
    return m; 
}
 
void solve()
{
    int n, m; cin >> n >> m; 
    vector <pair<db, db>> v(n), a(n), b(n);
 
    for(int i = 0; i < n; i++) 
    {
        cin >> v[i].sd >> v[i].fs;
        if(v[i].fs == -1) v[i].fs = Inf;
        a[i].fs = v[i].sd; b[i].fs = v[i].fs; 
        a[i].sd = b[i].sd = i;   
    } 
 
    sort(all(v)); sort(all(a)); sort(all(b)); 
    
    db ans = Inf; int fx = prec(a, b, n, m); 
    //cerr << fx << endl; 
    vector <vector<vector<db>>> dp(n + 2, vector <vector<db>> (
      m + 2, vector <db> (m + 2, Inf)
    )); dp[0][1][0] = 0.000; 
  
    for(db l = max(0, fx - 50); l <= min(fx + 50, m); l++)
    {        
        for(db i = 0; i < n; i++)
        {
            for(db k = 0; k <= m; k++)
            {
                if(i == k)
                {        
                    for(db j = 1; j <= l; j++)
                    {
                        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 / l); 
                        dp[i+1][j+1][k+1] = min(dp[i+1][j+1][k+1], dp[i][j][k] + v[i].fs / j); 
                    }
                }   
                else 
                {
                    dp[i+1][l][k] = min(dp[i+1][l][k], dp[i][l][k]);  
                    dp[i+1][l][k+1] = min(dp[i+1][l][k+1], dp[i][l][k] + v[i].sd / l); 
                }
            }
            ans = min(ans, dp[i+1][l][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;
}

Compilation message

Main.cpp: In function 'int prec(std::vector<std::pair<double, double> >, std::vector<std::pair<double, double> >, int, int)':
Main.cpp:50:32: warning: unused variable 'ans' [-Wunused-variable]
   50 |     vector <db> take(n, 1); db ans = Inf;
      |                                ^~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 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 348 KB Output is correct
5 Correct 11 ms 12124 KB Output is correct
6 Correct 50 ms 65876 KB Output is correct
7 Correct 131 ms 255312 KB Output is correct
8 Correct 264 ms 565932 KB Output is correct
9 Correct 461 ms 1002576 KB Output is correct
10 Correct 230 ms 495188 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 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 348 KB Output is correct
5 Correct 11 ms 12124 KB Output is correct
6 Correct 50 ms 65876 KB Output is correct
7 Correct 131 ms 255312 KB Output is correct
8 Correct 264 ms 565932 KB Output is correct
9 Correct 461 ms 1002576 KB Output is correct
10 Correct 230 ms 495188 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 61 ms 94440 KB Output is correct
13 Correct 77 ms 94292 KB Output is correct
14 Correct 77 ms 94332 KB Output is correct
15 Correct 343 ms 495264 KB Output is correct
16 Correct 379 ms 495268 KB Output is correct
17 Correct 300 ms 495184 KB Output is correct
18 Correct 718 ms 1002592 KB Output is correct
19 Correct 825 ms 1002600 KB Output is correct
20 Correct 512 ms 1002576 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 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 0 ms 516 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 348 KB Output is correct
11 Correct 0 ms 348 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 348 KB Output is correct
15 Correct 0 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 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 0 ms 516 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 348 KB Output is correct
11 Correct 0 ms 348 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 348 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 1 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 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 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 0 ms 360 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 1 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 1 ms 344 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 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 0 ms 516 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 348 KB Output is correct
11 Correct 0 ms 348 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 348 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 1 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 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 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 0 ms 360 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 1 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 1 ms 344 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 604 KB Output is correct
42 Correct 1 ms 604 KB Output is correct
43 Correct 1 ms 1624 KB Output is correct
44 Correct 1 ms 1372 KB Output is correct
45 Correct 2 ms 2652 KB Output is correct
46 Correct 3 ms 2852 KB Output is correct
47 Correct 6 ms 4184 KB Output is correct
48 Correct 4 ms 4188 KB Output is correct
49 Correct 6 ms 5980 KB Output is correct
50 Correct 6 ms 5980 KB Output is correct
51 Correct 9 ms 9268 KB Output is correct
52 Correct 10 ms 9052 KB Output is correct
53 Correct 4 ms 4188 KB Output is correct
54 Correct 4 ms 4188 KB Output is correct
55 Correct 4 ms 4188 KB Output is correct
56 Correct 4 ms 4224 KB Output is correct
57 Correct 4 ms 4440 KB Output is correct
58 Correct 4 ms 4188 KB Output is correct
59 Correct 4 ms 4188 KB Output is correct
60 Correct 4 ms 4188 KB Output is correct

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 718 ms 1002592 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 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 348 KB Output is correct
5 Correct 11 ms 12124 KB Output is correct
6 Correct 50 ms 65876 KB Output is correct
7 Correct 131 ms 255312 KB Output is correct
8 Correct 264 ms 565932 KB Output is correct
9 Correct 461 ms 1002576 KB Output is correct
10 Correct 230 ms 495188 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 61 ms 94440 KB Output is correct
13 Correct 77 ms 94292 KB Output is correct
14 Correct 77 ms 94332 KB Output is correct
15 Correct 343 ms 495264 KB Output is correct
16 Correct 379 ms 495268 KB Output is correct
17 Correct 300 ms 495184 KB Output is correct
18 Correct 718 ms 1002592 KB Output is correct
19 Correct 825 ms 1002600 KB Output is correct
20 Correct 512 ms 1002576 KB Output is correct
21 Correct 0 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 516 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 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 1 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 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 344 KB Output is correct
44 Correct 1 ms 344 KB Output is correct
45 Correct 1 ms 344 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 360 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 1 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 1 ms 344 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 1 ms 604 KB Output is correct
62 Correct 1 ms 604 KB Output is correct
63 Correct 1 ms 1624 KB Output is correct
64 Correct 1 ms 1372 KB Output is correct
65 Correct 2 ms 2652 KB Output is correct
66 Correct 3 ms 2852 KB Output is correct
67 Correct 6 ms 4184 KB Output is correct
68 Correct 4 ms 4188 KB Output is correct
69 Correct 6 ms 5980 KB Output is correct
70 Correct 6 ms 5980 KB Output is correct
71 Correct 9 ms 9268 KB Output is correct
72 Correct 10 ms 9052 KB Output is correct
73 Correct 4 ms 4188 KB Output is correct
74 Correct 4 ms 4188 KB Output is correct
75 Correct 4 ms 4188 KB Output is correct
76 Correct 4 ms 4224 KB Output is correct
77 Correct 4 ms 4440 KB Output is correct
78 Correct 4 ms 4188 KB Output is correct
79 Correct 4 ms 4188 KB Output is correct
80 Correct 4 ms 4188 KB Output is correct
81 Incorrect 718 ms 1002592 KB Output isn't correct
82 Halted 0 ms 0 KB -