Submission #1257916

#	Time	Username	Problem	Language	Result	Execution time	Memory
1257916		random_name	Stove (JOI18_stove)	C++20	100 / 100	30 ms	1864 KiB

stove

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main(){
    ll n, k;
    cin >> n >> k;
    k--;

    vector<ll> A(n);
    for(ll i = 0; i < n; i++){
        cin >> A[i];
    }
    sort(A.begin(), A.end());

    vector<ll> B(n-1);
    for(ll i = 0; i < n-1; i++){
        B[i] = (A[i+1] - A[i] - 1);
    }

    sort(B.begin(), B.end(), greater<ll>());

    ll res = 0;
    for(ll i = 0; i < k;i++){
        res += B[i];
    }

    cout << A.back() - A.front() + 1 - res << '\n';
}

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