oj.uz

Submission #753816

# Submission time Handle Problem Language Result Execution time Memory
753816 2023-06-06T06:14:57 Z bgnbvnbv Let's Win the Election (JOI22_ho_t3) C++14
10 / 100
 1678 ms 8256 KB 
#include<bits/stdc++.h>
#define TASKNAME "codeforce"
#define pb push_back
#define pli pair<int,int>
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=long long;
const ll maxN=2e5;
const ll inf=1e8;
const ll mod=1e9+7;

ll n,k;
struct qq
{
    ll a,b;
    bool operator<(const qq&o)
    {
        if(b==o.b) return a<o.a;
        return b<o.b;
    }
}a[maxN];
using ld=long double;
ld dp[2][505][505];
void solve()
{
    cin >> n >> k;
    for(int i=1;i<=n;i++)
    {
        cin >> a[i].a >> a[i].b;
        if(a[i].b==-1) a[i].b=1e14;
    }
    sort(a+1,a+n+1);
    for(int i=0;i<=n;i++)
    {
        for(int j=0;j<=k;j++) dp[0][i][j]=inf;
    }
    dp[0][0][0]=0;
    for(int i=1;i<=n;i++)
    {
        for(int j=0;j<=n;j++)
        {
            for(int q=0;q<=k;q++)
            {
                dp[i&1][j][q]=dp[(i-1)&1][j][q];
                //lay vote
                if(q>=1) dp[i&1][j][q]=min(dp[i&1][j][q],dp[(i-1)&1][j][q-1]+(ld)a[i].a/(j+1));
                //lay nguoi
                if(j>=1&&q>=1&&a[i].b<=1000) dp[i&1][j][q]=min(dp[i&1][j][q],dp[(i-1)&1][j-1][q-1]+(ld)a[i].b/(j));
            }
        }
    }
    ld ans=inf;
    //cout << dp[1][1][1]<<'\n';
    for(int j=0;j<=n;j++)
    {
        ans=min(ans,dp[n&1][j][k]);
    }
    cout << fixed<< setprecision(5)<<ans;
}
int main()
{
    fastio
    //freopen(TASKNAME".INP","r",stdin);
    //freopen(TASKNAME".OUT","w",stdout);
    solve();
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 139 ms 5132 KB Output is correct
6 Correct 232 ms 6272 KB Output is correct
7 Correct 499 ms 8240 KB Output is correct
8 Correct 764 ms 8248 KB Output is correct
9 Correct 944 ms 8252 KB Output is correct
10 Correct 704 ms 8148 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 139 ms 5132 KB Output is correct
6 Correct 232 ms 6272 KB Output is correct
7 Correct 499 ms 8240 KB Output is correct
8 Correct 764 ms 8248 KB Output is correct
9 Correct 944 ms 8252 KB Output is correct
10 Correct 704 ms 8148 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 451 ms 6612 KB Output is correct
13 Correct 403 ms 6732 KB Output is correct
14 Correct 329 ms 6612 KB Output is correct
15 Correct 1096 ms 8248 KB Output is correct
16 Correct 936 ms 8256 KB Output is correct
17 Correct 768 ms 8244 KB Output is correct
18 Correct 1678 ms 8248 KB Output is correct
19 Correct 1341 ms 8252 KB Output is correct
20 Correct 1038 ms 8252 KB Output is correct

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Incorrect 1 ms 340 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Incorrect 1 ms 340 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Incorrect 1 ms 340 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 1672 ms 8248 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 139 ms 5132 KB Output is correct
6 Correct 232 ms 6272 KB Output is correct
7 Correct 499 ms 8240 KB Output is correct
8 Correct 764 ms 8248 KB Output is correct
9 Correct 944 ms 8252 KB Output is correct
10 Correct 704 ms 8148 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 451 ms 6612 KB Output is correct
13 Correct 403 ms 6732 KB Output is correct
14 Correct 329 ms 6612 KB Output is correct
15 Correct 1096 ms 8248 KB Output is correct
16 Correct 936 ms 8256 KB Output is correct
17 Correct 768 ms 8244 KB Output is correct
18 Correct 1678 ms 8248 KB Output is correct
19 Correct 1341 ms 8252 KB Output is correct
20 Correct 1038 ms 8252 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Incorrect 1 ms 340 KB Output isn't correct
30 Halted 0 ms 0 KB -