oj.uz

Submission #534676

# Submission time Handle Problem Language Result Execution time Memory
534676 2022-03-08T13:54:21 Z Cookie197 Let's Win the Election (JOI22_ho_t3) C++17
100 / 100
 1004 ms 2372 KB 
#include<iostream>
#include<vector>
#include<algorithm>
#include<math.h>
#include<set>
#include<iomanip>
using namespace std;
#define ll long long
#define pii pair<ll,ll> 
#define mp make_pair
#define endl "\n"
#define out(x) cout << #x << " = " << x << endl
#define outp(x) cout << #x << ".first = " << x.first << "  " << #x << ".second = " << x.second << endl
#pragma GCC optimize("Ofast")
#define lll __int128

// enumerate the num of collaborators, from 0 to k-1
// it is optimal to collect all collaborators first, then give speeches
// if we know which collaborators to choose, it's better to choose the ones with smaller b first
void chmin(double &a, double x){
    if (x<a) a=x;
}
ll n,k;
pii arr[505];
bool subtask1 = true, subtask2 = true;

// 看到第i個人，拿到了j票，目前people = p，最少時間
//double dp[505][505][505];

// 看到第i個人，選了j個B類
double dp[505][505];

bool comp(pii a, pii b){
    if (a.second != b.second) return a.second < b.second;
    return a.first < b.first;
}
signed main(){
    ios::sync_with_stdio(false); cin.tie(0);
    cin>>n>>k;
    int good=n; 
    for (int i=1;i<=n;i++) {
        cin>>arr[i].first>>arr[i].second;
        if (arr[i].second != -1) subtask1 = false;
        if (arr[i].second == -1) arr[i].second = 1e9, good--;
    }

    
    double best = 1e9;
    sort(arr+1,arr+1+n,comp);
    for (int goal=0;goal<=k;goal++){
        if (goal>good) continue;
        for (int i=0;i<=n+3;i++) for (int j=0;j<=n+3;j++) dp[i][j] = 1e9;
        dp[1][0] = 1.0*arr[1].first/(goal+1); dp[1][1] = arr[1].second; dp[0][0] = 0;

        for (int i=1;i<=k;i++) for (int j=0;j<=goal;j++){
            chmin(dp[i+1][j], dp[i][j] + 1.0*arr[i+1].first/(1+goal));
            if (arr[i].second != 1e9) chmin(dp[i+1][j+1], dp[i][j] + 1.0*arr[i+1].second/(1+j));
        }

        double now = 1e9;
        for (int pos=goal;pos<=k;pos++){ // position of last collaborator
            vector<int> tmp;
            for (int i=pos+1;i<=n;i++){ // 還要選k-pos個A類
                tmp.push_back(arr[i].first);
                //if (goal==0) cout<<pos<<" : "<<arr[i].first<<endl;
            }
            sort(tmp.begin(),tmp.end());
            double cost = 0;
            for (int i=0;i<k-pos;i++) cost += 1.0*tmp[i];
            cost /= (goal+1);
            now = min(now, cost + dp[pos][goal]);
        }
        best = min(now, best);
    }
    cout<<fixed<<setprecision(9)<<best<<endl;
    
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 2 ms 2252 KB Output is correct
6 Correct 2 ms 2252 KB Output is correct
7 Correct 2 ms 2252 KB Output is correct
8 Correct 3 ms 2252 KB Output is correct
9 Correct 4 ms 2252 KB Output is correct
10 Correct 2 ms 2252 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 2 ms 2252 KB Output is correct
6 Correct 2 ms 2252 KB Output is correct
7 Correct 2 ms 2252 KB Output is correct
8 Correct 3 ms 2252 KB Output is correct
9 Correct 4 ms 2252 KB Output is correct
10 Correct 2 ms 2252 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 85 ms 2300 KB Output is correct
13 Correct 127 ms 2252 KB Output is correct
14 Correct 86 ms 2252 KB Output is correct
15 Correct 258 ms 2304 KB Output is correct
16 Correct 366 ms 2300 KB Output is correct
17 Correct 153 ms 2252 KB Output is correct
18 Correct 441 ms 2300 KB Output is correct
19 Correct 453 ms 2372 KB Output is correct
20 Correct 154 ms 2300 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 716 KB Output is correct
42 Correct 1 ms 716 KB Output is correct
43 Correct 2 ms 716 KB Output is correct
44 Correct 2 ms 716 KB Output is correct
45 Correct 3 ms 716 KB Output is correct
46 Correct 3 ms 716 KB Output is correct
47 Correct 4 ms 716 KB Output is correct
48 Correct 4 ms 716 KB Output is correct
49 Correct 7 ms 716 KB Output is correct
50 Correct 5 ms 716 KB Output is correct
51 Correct 6 ms 724 KB Output is correct
52 Correct 5 ms 716 KB Output is correct
53 Correct 4 ms 728 KB Output is correct
54 Correct 4 ms 716 KB Output is correct
55 Correct 4 ms 716 KB Output is correct
56 Correct 4 ms 716 KB Output is correct
57 Correct 4 ms 716 KB Output is correct
58 Correct 4 ms 720 KB Output is correct
59 Correct 5 ms 716 KB Output is correct
60 Correct 4 ms 716 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 939 ms 2308 KB Output is correct
2 Correct 932 ms 2296 KB Output is correct
3 Correct 938 ms 2304 KB Output is correct
4 Correct 943 ms 2304 KB Output is correct
5 Correct 926 ms 2296 KB Output is correct
6 Correct 925 ms 2316 KB Output is correct
7 Correct 837 ms 2304 KB Output is correct

Subtask #7
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 2 ms 2252 KB Output is correct
6 Correct 2 ms 2252 KB Output is correct
7 Correct 2 ms 2252 KB Output is correct
8 Correct 3 ms 2252 KB Output is correct
9 Correct 4 ms 2252 KB Output is correct
10 Correct 2 ms 2252 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 85 ms 2300 KB Output is correct
13 Correct 127 ms 2252 KB Output is correct
14 Correct 86 ms 2252 KB Output is correct
15 Correct 258 ms 2304 KB Output is correct
16 Correct 366 ms 2300 KB Output is correct
17 Correct 153 ms 2252 KB Output is correct
18 Correct 441 ms 2300 KB Output is correct
19 Correct 453 ms 2372 KB Output is correct
20 Correct 154 ms 2300 KB Output is correct
21 Correct 0 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 0 ms 332 KB Output is correct
26 Correct 0 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 0 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 332 KB Output is correct
45 Correct 1 ms 332 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 1 ms 332 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
54 Correct 1 ms 332 KB Output is correct
55 Correct 1 ms 332 KB Output is correct
56 Correct 1 ms 332 KB Output is correct
57 Correct 1 ms 332 KB Output is correct
58 Correct 1 ms 332 KB Output is correct
59 Correct 1 ms 332 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 1 ms 716 KB Output is correct
62 Correct 1 ms 716 KB Output is correct
63 Correct 2 ms 716 KB Output is correct
64 Correct 2 ms 716 KB Output is correct
65 Correct 3 ms 716 KB Output is correct
66 Correct 3 ms 716 KB Output is correct
67 Correct 4 ms 716 KB Output is correct
68 Correct 4 ms 716 KB Output is correct
69 Correct 7 ms 716 KB Output is correct
70 Correct 5 ms 716 KB Output is correct
71 Correct 6 ms 724 KB Output is correct
72 Correct 5 ms 716 KB Output is correct
73 Correct 4 ms 728 KB Output is correct
74 Correct 4 ms 716 KB Output is correct
75 Correct 4 ms 716 KB Output is correct
76 Correct 4 ms 716 KB Output is correct
77 Correct 4 ms 716 KB Output is correct
78 Correct 4 ms 720 KB Output is correct
79 Correct 5 ms 716 KB Output is correct
80 Correct 4 ms 716 KB Output is correct
81 Correct 939 ms 2308 KB Output is correct
82 Correct 932 ms 2296 KB Output is correct
83 Correct 938 ms 2304 KB Output is correct
84 Correct 943 ms 2304 KB Output is correct
85 Correct 926 ms 2296 KB Output is correct
86 Correct 925 ms 2316 KB Output is correct
87 Correct 837 ms 2304 KB Output is correct
88 Correct 27 ms 2252 KB Output is correct
89 Correct 27 ms 2304 KB Output is correct
90 Correct 137 ms 2308 KB Output is correct
91 Correct 138 ms 2252 KB Output is correct
92 Correct 465 ms 2252 KB Output is correct
93 Correct 453 ms 2312 KB Output is correct
94 Correct 729 ms 2252 KB Output is correct
95 Correct 793 ms 2300 KB Output is correct
96 Correct 1004 ms 2296 KB Output is correct
97 Correct 964 ms 2304 KB Output is correct
98 Correct 645 ms 2304 KB Output is correct
99 Correct 724 ms 2304 KB Output is correct
100 Correct 746 ms 2300 KB Output is correct
101 Correct 711 ms 2252 KB Output is correct
102 Correct 635 ms 2300 KB Output is correct
103 Correct 540 ms 2252 KB Output is correct
104 Correct 586 ms 2300 KB Output is correct
105 Correct 222 ms 2372 KB Output is correct