oj.uz

Submission #931287

# Submission time Handle Problem Language Result Execution time Memory
931287 2024-02-21T14:25:26 Z andrei_boaca Feast (NOI19_feast) C++17
30 / 100
 47 ms 19804 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
const ll INF=1e17;
ll n,k,v[300005];
struct date
{
    ll val,l,r;
};
date dp[300005][2];
date combine(date a, date b)
{
    if(a.val>b.val)
        return a;
    if(a.val<b.val)
        return b;
    a.l=min(a.l,b.l);
    a.r=max(a.r,b.r);
    return a;
}
date calc(ll cost)
{
    dp[0][0]={0,0,0};
    dp[0][1]={-INF,0,0};
    for(int i=1;i<=n;i++)
    {
        dp[i][0]=combine(dp[i-1][0],dp[i-1][1]);
        date a=dp[i-1][0];
        a.l++;
        a.r++;
        a.val+=v[i]-cost;
        dp[i][1]=a;
        a=dp[i-1][1];
        a.val+=v[i];
        dp[i][1]=combine(dp[i][1],a);
        a=dp[i-1][1];
        a.l++;
        a.r++;
        a.val+=v[i]-cost;
        dp[i][1]=combine(dp[i][1],a);
    }
    return combine(dp[n][0],dp[n][1]);
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin>>n>>k;
    for(ll i=1;i<=n;i++)
        cin>>v[i];
    ll st=-1e12;
    ll dr=1e12;
    while(st<=dr)
    {
        ll mij=(st+dr)/2;
        date rez=calc(mij);
        if(rez.l<=k&&rez.r>=k)
        {
            cout<<max(0LL,rez.val+k*mij);
            return 0;
        }
        if(rez.l>k)
            st=mij+1;
        else
            dr=mij-1;
    }
    assert(false);
    return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 19572 KB Output is correct
2 Correct 26 ms 19676 KB Output is correct
3 Correct 27 ms 19540 KB Output is correct
4 Correct 27 ms 19792 KB Output is correct
5 Correct 26 ms 19540 KB Output is correct
6 Correct 26 ms 19536 KB Output is correct
7 Correct 26 ms 19536 KB Output is correct
8 Correct 25 ms 19536 KB Output is correct
9 Correct 26 ms 19540 KB Output is correct
10 Correct 26 ms 19636 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 17744 KB Output is correct
2 Correct 34 ms 18012 KB Output is correct
3 Correct 32 ms 17752 KB Output is correct
4 Correct 18 ms 17756 KB Output is correct
5 Correct 28 ms 19540 KB Output is correct
6 Correct 32 ms 17756 KB Output is correct
7 Correct 19 ms 18000 KB Output is correct
8 Correct 27 ms 19540 KB Output is correct
9 Correct 27 ms 19548 KB Output is correct
10 Correct 17 ms 18012 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 19796 KB Output is correct
2 Correct 43 ms 19796 KB Output is correct
3 Correct 39 ms 19804 KB Output is correct
4 Correct 41 ms 19792 KB Output is correct
5 Correct 39 ms 19796 KB Output is correct
6 Correct 44 ms 19792 KB Output is correct
7 Correct 47 ms 19796 KB Output is correct
8 Correct 45 ms 19796 KB Output is correct
9 Correct 44 ms 19796 KB Output is correct
10 Correct 46 ms 19804 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Incorrect 1 ms 2396 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Incorrect 1 ms 2396 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Incorrect 1 ms 2396 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 19572 KB Output is correct
2 Correct 26 ms 19676 KB Output is correct
3 Correct 27 ms 19540 KB Output is correct
4 Correct 27 ms 19792 KB Output is correct
5 Correct 26 ms 19540 KB Output is correct
6 Correct 26 ms 19536 KB Output is correct
7 Correct 26 ms 19536 KB Output is correct
8 Correct 25 ms 19536 KB Output is correct
9 Correct 26 ms 19540 KB Output is correct
10 Correct 26 ms 19636 KB Output is correct
11 Correct 38 ms 17744 KB Output is correct
12 Correct 34 ms 18012 KB Output is correct
13 Correct 32 ms 17752 KB Output is correct
14 Correct 18 ms 17756 KB Output is correct
15 Correct 28 ms 19540 KB Output is correct
16 Correct 32 ms 17756 KB Output is correct
17 Correct 19 ms 18000 KB Output is correct
18 Correct 27 ms 19540 KB Output is correct
19 Correct 27 ms 19548 KB Output is correct
20 Correct 17 ms 18012 KB Output is correct
21 Correct 43 ms 19796 KB Output is correct
22 Correct 43 ms 19796 KB Output is correct
23 Correct 39 ms 19804 KB Output is correct
24 Correct 41 ms 19792 KB Output is correct
25 Correct 39 ms 19796 KB Output is correct
26 Correct 44 ms 19792 KB Output is correct
27 Correct 47 ms 19796 KB Output is correct
28 Correct 45 ms 19796 KB Output is correct
29 Correct 44 ms 19796 KB Output is correct
30 Correct 46 ms 19804 KB Output is correct
31 Correct 1 ms 2392 KB Output is correct
32 Incorrect 1 ms 2396 KB Output isn't correct
33 Halted 0 ms 0 KB -