oj.uz

Submission #369086

# Submission time Handle Problem Language Result Execution time Memory
369086 2021-02-20T09:16:40 Z Lam_lai_cuoc_doi Stove (JOI18_stove) C++17
0 / 100
 1 ms 364 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;

const bool typetest = 0;
const int N = 1e5 + 5;
int n, k;
ll a[N], b[N];

void Read()
{
    cin >> n >> k;
    for (int i = 1; i <= n; ++i)
        cin >> a[i];
    for (int i = 1; i < n; ++i)
        b[i] = a[i + 1] - a[i];
}

void Solve()
{
    sort(b + 1, b + n);
    for (int i = n - 1; i >= n - k + 1; --i)
        a[n] -= b[i];
    cout << a[n] + k - 1;
}

int32_t main()
{
    //ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int t(1);
    if (typetest)
        cin >> t;
    for (int _ = 1; _ <= t; ++_)
    {
        Read();
        Solve();
    }
}

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Incorrect 1 ms 364 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Incorrect 1 ms 364 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Incorrect 1 ms 364 KB Output isn't correct
3 Halted 0 ms 0 KB -