oj.uz

Submission #930177

# Submission time Handle Problem Language Result Execution time Memory
930177 2024-02-18T20:45:42 Z ASN49K Feast (NOI19_feast) C++14
12 / 100
 71 ms 2904 KB 
#include <bits/stdc++.h>

using namespace std;
#define pb push_back
#define all(x) x.begin(),x.end()
#define int long long
const int inf=1e9;
using i64=long long;
int n;
vector<int>a;
pair<i64 , int> test(const int lambda)
{
    pair<i64,int>sol={0,0};
    pair<i64,int> last={-1e18,0};
    for(int i=0;i<n;i++)
    {
        if(sol.first-lambda > last.first || (sol.first-lambda == last.first && sol.second<last.second))
        {
            last={sol.first+a[i]-lambda, sol.second+1};
        }
        else
        {
            last.first+=a[i];
        }

        if(sol.first<last.first || (sol.first==last.first && sol.second>last.second))
        {
            sol=last;
        }
    }
    return sol;
}
main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    int k;
    cin>>n>>k;
    a.resize(n);
    for(int i=0;i<n;i++)
    {
        cin>>a[i];
    }
    int st=0,dr=inf;
    i64 rez=-1e18;
    while(st<=dr)
    {
        int m=(st+dr)/2;
        auto xd=test(m);
        if(xd.second < k)
        {
            dr=m-1;
            rez=xd.first+1LL*k*m;
        }
        else
        {
            st=m+1;
            rez=xd.first+1LL*k*m;
        }
    }
    cout<<rez;
    return 0;
}

Compilation message

feast.cpp:33:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   33 | main()
      | ^~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 2652 KB Output is correct
2 Correct 30 ms 2904 KB Output is correct
3 Correct 36 ms 2652 KB Output is correct
4 Correct 30 ms 2652 KB Output is correct
5 Correct 30 ms 2652 KB Output is correct
6 Correct 30 ms 2648 KB Output is correct
7 Correct 36 ms 2652 KB Output is correct
8 Correct 30 ms 2652 KB Output is correct
9 Correct 30 ms 2652 KB Output is correct
10 Correct 31 ms 2652 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 2652 KB Output is correct
2 Correct 25 ms 2652 KB Output is correct
3 Correct 22 ms 2652 KB Output is correct
4 Correct 23 ms 2652 KB Output is correct
5 Correct 34 ms 2652 KB Output is correct
6 Correct 23 ms 2652 KB Output is correct
7 Correct 23 ms 2652 KB Output is correct
8 Correct 31 ms 2648 KB Output is correct
9 Correct 29 ms 2904 KB Output is correct
10 Correct 25 ms 2648 KB Output is correct

Subtask #3
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 71 ms 2652 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 2652 KB Output is correct
2 Correct 30 ms 2904 KB Output is correct
3 Correct 36 ms 2652 KB Output is correct
4 Correct 30 ms 2652 KB Output is correct
5 Correct 30 ms 2652 KB Output is correct
6 Correct 30 ms 2648 KB Output is correct
7 Correct 36 ms 2652 KB Output is correct
8 Correct 30 ms 2652 KB Output is correct
9 Correct 30 ms 2652 KB Output is correct
10 Correct 31 ms 2652 KB Output is correct
11 Correct 24 ms 2652 KB Output is correct
12 Correct 25 ms 2652 KB Output is correct
13 Correct 22 ms 2652 KB Output is correct
14 Correct 23 ms 2652 KB Output is correct
15 Correct 34 ms 2652 KB Output is correct
16 Correct 23 ms 2652 KB Output is correct
17 Correct 23 ms 2652 KB Output is correct
18 Correct 31 ms 2648 KB Output is correct
19 Correct 29 ms 2904 KB Output is correct
20 Correct 25 ms 2648 KB Output is correct
21 Incorrect 71 ms 2652 KB Output isn't correct
22 Halted 0 ms 0 KB -