Submission #219142

#	Time	Username	Problem	Language	Result	Execution time	Memory
219142		shart23	Stove (JOI18_stove)	C++14	100 / 100	28 ms	3324 KiB

stove

#include <bits/stdc++.h>

#define endl "\n"
#define int long long
#define fir first
#define sec second
using namespace std;

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int n, k;
    cin >> n >> k;
    vector<int> t(n);
    for (auto &x : t) {
        cin >> x;
    }
    int res = t.back() - t[0] + 1;
    vector<int> nov;
    for (int i = 0; i < n - 1; i++) {
        nov.push_back(t[i + 1] - t[i] - 1);
    }
    sort(nov.begin(), nov.end());
    reverse(nov.begin(), nov.end());
    for (int i = 0; i < k - 1; i++) {
        res -= nov[i];
    }
    cout << res << endl;
}

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50