oj.uz

Submission #534269

# Submission time Handle Problem Language Result Execution time Memory
534269 2022-03-08T02:54:49 Z PixelCat Let's Win the Election (JOI22_ho_t3) C++14
67 / 100
 2500 ms 1004404 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;
    For(i,1,n) cin>>a[i].F>>a[i].S;
    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
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 537 ms 1004404 KB Output is correct
6 Correct 1651 ms 1004352 KB Output is correct
7 Execution timed out 2627 ms 1004232 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 537 ms 1004404 KB Output is correct
6 Correct 1651 ms 1004352 KB Output is correct
7 Execution timed out 2627 ms 1004232 KB Time limit exceeded
8 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 588 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 588 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 2116 KB Output is correct
18 Correct 1 ms 2124 KB Output is correct
19 Correct 1 ms 2116 KB Output is correct
20 Correct 1 ms 2124 KB Output is correct
21 Correct 1 ms 2124 KB Output is correct
22 Correct 1 ms 2124 KB Output is correct
23 Correct 2 ms 2124 KB Output is correct
24 Correct 1 ms 2124 KB Output is correct
25 Correct 1 ms 2124 KB Output is correct
26 Correct 1 ms 2124 KB Output is correct
27 Correct 1 ms 2112 KB Output is correct
28 Correct 1 ms 2124 KB Output is correct
29 Correct 1 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 2264 KB Output is correct
33 Correct 1 ms 2124 KB Output is correct
34 Correct 1 ms 2144 KB Output is correct
35 Correct 1 ms 2124 KB Output is correct
36 Correct 1 ms 2124 KB Output is correct
37 Correct 2 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 1 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 588 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 2116 KB Output is correct
18 Correct 1 ms 2124 KB Output is correct
19 Correct 1 ms 2116 KB Output is correct
20 Correct 1 ms 2124 KB Output is correct
21 Correct 1 ms 2124 KB Output is correct
22 Correct 1 ms 2124 KB Output is correct
23 Correct 2 ms 2124 KB Output is correct
24 Correct 1 ms 2124 KB Output is correct
25 Correct 1 ms 2124 KB Output is correct
26 Correct 1 ms 2124 KB Output is correct
27 Correct 1 ms 2112 KB Output is correct
28 Correct 1 ms 2124 KB Output is correct
29 Correct 1 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 2264 KB Output is correct
33 Correct 1 ms 2124 KB Output is correct
34 Correct 1 ms 2144 KB Output is correct
35 Correct 1 ms 2124 KB Output is correct
36 Correct 1 ms 2124 KB Output is correct
37 Correct 2 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 1 ms 2124 KB Output is correct
41 Correct 18 ms 41420 KB Output is correct
42 Correct 18 ms 41420 KB Output is correct
43 Correct 20 ms 41368 KB Output is correct
44 Correct 21 ms 41420 KB Output is correct
45 Correct 28 ms 41328 KB Output is correct
46 Correct 29 ms 41420 KB Output is correct
47 Correct 42 ms 41388 KB Output is correct
48 Correct 40 ms 41456 KB Output is correct
49 Correct 68 ms 41436 KB Output is correct
50 Correct 94 ms 41436 KB Output is correct
51 Correct 18 ms 41412 KB Output is correct
52 Correct 17 ms 41420 KB Output is correct
53 Correct 41 ms 41436 KB Output is correct
54 Correct 41 ms 41432 KB Output is correct
55 Correct 40 ms 41420 KB Output is correct
56 Correct 40 ms 41436 KB Output is correct
57 Correct 41 ms 41420 KB Output is correct
58 Correct 39 ms 41420 KB Output is correct
59 Correct 39 ms 41436 KB Output is correct
60 Correct 41 ms 41340 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 438 ms 1004388 KB Output is correct
2 Correct 448 ms 1004352 KB Output is correct
3 Correct 532 ms 1004252 KB Output is correct
4 Correct 473 ms 1004332 KB Output is correct
5 Correct 476 ms 1004288 KB Output is correct
6 Correct 473 ms 1004240 KB Output is correct
7 Correct 511 ms 1004312 KB Output is correct

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 537 ms 1004404 KB Output is correct
6 Correct 1651 ms 1004352 KB Output is correct
7 Execution timed out 2627 ms 1004232 KB Time limit exceeded
8 Halted 0 ms 0 KB -