oj.uz

Submission #534274

# Submission time Handle Problem Language Result Execution time Memory
534274 2022-03-08T02:57:19 Z PixelCat Let's Win the Election (JOI22_ho_t3) C++14
72 / 100
 2500 ms 1004488 KB 
#include <bits/stdc++.h>
#define For(i,a,b) for(int i=a;i<=b;i++)
#define Forr(i,a,b) for(int i=a;i>=b;i--)
#define F first
#define S second
#define sz(x) ((int)x.size())
#define all(x) x.begin(),x.end()
#define eb emplace_back
#define INF (LL)(9e18)
#define int LL
using namespace std;
using LL=long long;
using pii=pair<int,int>;

template<typename T>
void chmin(T &_a,const T &_b){
    if(_a>_b) _a=_b;
}

const int MAXN=510;

double p[MAXN];
pii a[MAXN];
double dp[MAXN][MAXN][MAXN];

int32_t main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    // OAO
    int n,K; cin>>n>>K;
    bool oao=true;
    For(i,1,n){
        cin>>a[i].F>>a[i].S;
        if(a[i].S!=-1) oao=false;
    }
    if(oao){
        sort(a+1,a+n+1,[](pii &pa,pii &pb){
            return pa.F<pb.F;
        });
        int tot=0;
        For(i,1,K) tot+=a[i].F;
        cout<<tot<<"\n";
        return 0;
    }
    sort(a+1,a+n+1,[](pii &pa,pii &pb){
        return pa.S<pb.S;
    });
    // For(i,1,n) cerr<<a[i].F<<" "<<a[i].S<<"\n";
    p[0]=1;
    For(i,1,n) p[i]=1.0/(i+1);
    For(i,0,n) For(j,0,n) For(k,0,n) dp[i][j][k]=INF;
    dp[0][0][0]=0;
    if(n==K){
        double ans=INF;
        For(nc,0,n){
            For(i,1,n) For(j,0,min(i,nc)){
                dp[0][i][j]=dp[0][i-1][j]+a[i].F*p[nc];
                if(a[i].S!=-1 && j){
                    chmin(dp[0][i][j],dp[0][i-1][j-1]+a[i].S*p[j-1]);
                }
            }
            chmin(ans,dp[0][n][nc]);
        }
        cout<<fixed<<setprecision(15);
        cout<<ans<<"\n";
        return 0;
    }
    double ans=INF;
    For(nc,0,K){
        For(i,1,n) For(j,0,min(i,K)) For(k,0,min(j,nc)){
            dp[i][j][k]=dp[i-1][j][k];
            if(j){
                chmin(dp[i][j][k],dp[i-1][j-1][k]+a[i].F*p[nc]);
            }
            if(a[i].S!=-1 && k){
                chmin(dp[i][j][k],dp[i-1][j-1][k-1]+a[i].S*p[k-1]);
            }
        }
        // if(nc==3){
        //     For(i,1,n) For(j,0,K) For(k,0,nc){
        //         cerr<<dp[i][j][k]<<"\t\n"[k==nc];
        //         if(j==K && k==nc) cerr<<"\n";
        //     }
        // }
        // cerr<<nc<<" "<<dp[n][K][nc]<<"\n";
        chmin(ans,dp[n][K][nc]);
    }
    cout<<fixed<<setprecision(15);
    cout<<ans<<"\n";
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 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

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 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 1 ms 332 KB Output is correct
12 Execution timed out 2628 ms 1004336 KB Time limit exceeded
13 Halted 0 ms 0 KB -

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 588 KB Output is correct
2 Correct 1 ms 588 KB Output is correct
3 Correct 1 ms 588 KB Output is correct
4 Correct 1 ms 588 KB Output is correct
5 Correct 1 ms 588 KB Output is correct
6 Correct 1 ms 588 KB Output is correct
7 Correct 1 ms 588 KB Output is correct
8 Correct 1 ms 588 KB Output is correct
9 Correct 1 ms 588 KB Output is correct
10 Correct 1 ms 576 KB Output is correct
11 Correct 1 ms 588 KB Output is correct
12 Correct 1 ms 588 KB Output is correct
13 Correct 1 ms 588 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 588 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 588 KB Output is correct
2 Correct 1 ms 588 KB Output is correct
3 Correct 1 ms 588 KB Output is correct
4 Correct 1 ms 588 KB Output is correct
5 Correct 1 ms 588 KB Output is correct
6 Correct 1 ms 588 KB Output is correct
7 Correct 1 ms 588 KB Output is correct
8 Correct 1 ms 588 KB Output is correct
9 Correct 1 ms 588 KB Output is correct
10 Correct 1 ms 576 KB Output is correct
11 Correct 1 ms 588 KB Output is correct
12 Correct 1 ms 588 KB Output is correct
13 Correct 1 ms 588 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 588 KB Output is correct
16 Correct 1 ms 2124 KB Output is correct
17 Correct 1 ms 2124 KB Output is correct
18 Correct 2 ms 2124 KB Output is correct
19 Correct 2 ms 2124 KB Output is correct
20 Correct 1 ms 2124 KB Output is correct
21 Correct 1 ms 2124 KB Output is correct
22 Correct 2 ms 2124 KB Output is correct
23 Correct 2 ms 2140 KB Output is correct
24 Correct 2 ms 2124 KB Output is correct
25 Correct 2 ms 2124 KB Output is correct
26 Correct 2 ms 2124 KB Output is correct
27 Correct 1 ms 2124 KB Output is correct
28 Correct 2 ms 2124 KB Output is correct
29 Correct 2 ms 2124 KB Output is correct
30 Correct 1 ms 2124 KB Output is correct
31 Correct 2 ms 2124 KB Output is correct
32 Correct 1 ms 2124 KB Output is correct
33 Correct 2 ms 2116 KB Output is correct
34 Correct 2 ms 2124 KB Output is correct
35 Correct 1 ms 2124 KB Output is correct
36 Correct 1 ms 2124 KB Output is correct
37 Correct 1 ms 2124 KB Output is correct
38 Correct 1 ms 2124 KB Output is correct
39 Correct 1 ms 2124 KB Output is correct
40 Correct 2 ms 2124 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 588 KB Output is correct
2 Correct 1 ms 588 KB Output is correct
3 Correct 1 ms 588 KB Output is correct
4 Correct 1 ms 588 KB Output is correct
5 Correct 1 ms 588 KB Output is correct
6 Correct 1 ms 588 KB Output is correct
7 Correct 1 ms 588 KB Output is correct
8 Correct 1 ms 588 KB Output is correct
9 Correct 1 ms 588 KB Output is correct
10 Correct 1 ms 576 KB Output is correct
11 Correct 1 ms 588 KB Output is correct
12 Correct 1 ms 588 KB Output is correct
13 Correct 1 ms 588 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 588 KB Output is correct
16 Correct 1 ms 2124 KB Output is correct
17 Correct 1 ms 2124 KB Output is correct
18 Correct 2 ms 2124 KB Output is correct
19 Correct 2 ms 2124 KB Output is correct
20 Correct 1 ms 2124 KB Output is correct
21 Correct 1 ms 2124 KB Output is correct
22 Correct 2 ms 2124 KB Output is correct
23 Correct 2 ms 2140 KB Output is correct
24 Correct 2 ms 2124 KB Output is correct
25 Correct 2 ms 2124 KB Output is correct
26 Correct 2 ms 2124 KB Output is correct
27 Correct 1 ms 2124 KB Output is correct
28 Correct 2 ms 2124 KB Output is correct
29 Correct 2 ms 2124 KB Output is correct
30 Correct 1 ms 2124 KB Output is correct
31 Correct 2 ms 2124 KB Output is correct
32 Correct 1 ms 2124 KB Output is correct
33 Correct 2 ms 2116 KB Output is correct
34 Correct 2 ms 2124 KB Output is correct
35 Correct 1 ms 2124 KB Output is correct
36 Correct 1 ms 2124 KB Output is correct
37 Correct 1 ms 2124 KB Output is correct
38 Correct 1 ms 2124 KB Output is correct
39 Correct 1 ms 2124 KB Output is correct
40 Correct 2 ms 2124 KB Output is correct
41 Correct 18 ms 41420 KB Output is correct
42 Correct 19 ms 41456 KB Output is correct
43 Correct 23 ms 41420 KB Output is correct
44 Correct 23 ms 41332 KB Output is correct
45 Correct 42 ms 41332 KB Output is correct
46 Correct 30 ms 41340 KB Output is correct
47 Correct 41 ms 41364 KB Output is correct
48 Correct 52 ms 41436 KB Output is correct
49 Correct 67 ms 41428 KB Output is correct
50 Correct 64 ms 41436 KB Output is correct
51 Correct 19 ms 41420 KB Output is correct
52 Correct 18 ms 41408 KB Output is correct
53 Correct 47 ms 41432 KB Output is correct
54 Correct 40 ms 41420 KB Output is correct
55 Correct 47 ms 41364 KB Output is correct
56 Correct 57 ms 41540 KB Output is correct
57 Correct 47 ms 41440 KB Output is correct
58 Correct 43 ms 41420 KB Output is correct
59 Correct 53 ms 41436 KB Output is correct
60 Correct 48 ms 41392 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 462 ms 1004328 KB Output is correct
2 Correct 482 ms 1004284 KB Output is correct
3 Correct 444 ms 1004356 KB Output is correct
4 Correct 484 ms 1004320 KB Output is correct
5 Correct 440 ms 1004308 KB Output is correct
6 Correct 486 ms 1004248 KB Output is correct
7 Correct 447 ms 1004488 KB Output is correct

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 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 1 ms 332 KB Output is correct
12 Execution timed out 2628 ms 1004336 KB Time limit exceeded
13 Halted 0 ms 0 KB -