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Submission #395756

# Submission time Handle Problem Language Result Execution time Memory
395756 2021-04-28T21:19:52 Z kaplanbar Stove (JOI18_stove) C++14
100 / 100
 23 ms 1880 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n, k;
    cin >> n >> k;

    if(k == n) {
        cout << n;
        exit(0);
    }

    vector<int> v(n);
    for(int i = 0; i < n; i++) {
        cin >> v[i];
    }

    ll s = 0;
    vector<ll> difs;
    for(int i = 1; i < n; i++) {
        s += v[i] - v[i - 1];
        difs.push_back(v[i] - v[i - 1]);
    }

    sort(difs.begin(), difs.end());

    for(int i = 0; i < k - 1; i++) {
        s -= difs[n - 2 - i];
    }

    cout << s + k;


    return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 21 ms 1868 KB Output is correct
17 Correct 22 ms 1880 KB Output is correct
18 Correct 20 ms 1868 KB Output is correct
19 Correct 22 ms 1868 KB Output is correct
20 Correct 20 ms 1868 KB Output is correct
21 Correct 21 ms 1876 KB Output is correct
22 Correct 21 ms 1876 KB Output is correct
23 Correct 20 ms 1876 KB Output is correct
24 Correct 23 ms 1872 KB Output is correct