Submission #173648

#	Time	Username	Problem	Language	Result	Execution time	Memory
173648		lckcode	Stove (JOI18_stove)	C++14	100 / 100	86 ms	3348 KiB

stove

#include <bits/stdc++.h>
using namespace std;
#define ll long long
ll a[100005];
int main () {
    int n, k; cin >> n >> k;
    for (int i = 1; i <= n; ++i) {
        cin >> a[i];
    }
    sort(a + 1, a + 1 + n);
    ll sum = a[n]+1-a[1];
    vector<ll> v;
    for (int i = 2; i <= n; ++i) {
        v.push_back(a[i] - a[i-1]-1);
    }
    sort(v.begin(), v.end(), greater<ll>());
    for (int i = 0; i < k - 1; ++i) sum -= v[i];
    cout << sum << endl;
}

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