oj.uz

Submission #891877

# Submission time Handle Problem Language Result Execution time Memory
891877 2023-12-24T10:23:32 Z 8pete8 Let's Win the Election (JOI22_ho_t3) C++17
0 / 100
 475 ms 1048576 KB 
#include<iostream>
#include<stack>
#include<map>
#include<vector>
#include<string>
#include<unordered_map>
#include <queue>
#include<cstring>
#include<limits.h>
#include <cassert>
#include<cmath>
#include<set>
#include<algorithm>
#include <iomanip>
#include<numeric> //gcd(a,b)
#include<bitset>
using namespace std;
#define ll long long
#define f first
#define endl "\n"
#define s second
#define pii pair<int,int>
#define ppii pair<pii,int>
#define vi vector<int>
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define F(n) for(int i=0;i<n;i++)
#define lb lower_bound
#define ub upper_bound
#define fastio ios::sync_with_stdio(false);cin.tie(NULL);
#pragma GCC optimize ("03,unroll-loops")
using namespace std;
#define int long long
#define double long double
const int mod=998244353,mxn=2e5+5,lg=30,inf=1e9,minf=-1e9,Mxn=100000;
bool use[mxn+10];
double dp[505][505][505];
int32_t main(){
    fastio
    int n,k;cin>>n>>k;
    double ans=inf;
    vector<pii>v(n);
    for(int i=0;i<n;i++){
        cin>>v[i].f>>v[i].s;
        v[i].s=(v[i].s==-1)?inf:v[i].s;
        swap(v[i].s,v[i].f);
    }
    sort(all(v));
    for(int i=0;i<=n;i++)for(int j=0;j<=n;j++)for(int g=0;g<=n;g++)dp[i][j][g]=inf;
    dp[0][1][0]=0;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=n;j++){
            for(int g=1;g<=k;g++){
                dp[i][j][g]=dp[i-1][j][g];
                if(dp[i-1][j][g-1]!=inf)dp[i][j][g]=min(dp[i][j][g],dp[i-1][j][g-1]+(v[i-1].s*1.0)/j);
                if(v[i-1].f!=inf&&j>1&&dp[i-1][j-1][g-1]!=inf)dp[i][j][g]=min(dp[i-1][j-1][g-1]+((v[i-1].f)*1.0/(j-1)),dp[i][j][g]);
                if(g==k)ans=min(ans,dp[i][j][g]);
            }
        }
    }
    cout<<setprecision(12);
    cout<<ans;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Runtime error 475 ms 1048576 KB Execution killed with signal 9
6 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Runtime error 475 ms 1048576 KB Execution killed with signal 9
6 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 14812 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 14812 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 14812 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Runtime error 472 ms 1048576 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 8540 KB Output is correct
5 Runtime error 475 ms 1048576 KB Execution killed with signal 9
6 Halted 0 ms 0 KB -