제출 #684063

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
684063		vjudge1	Stove (JOI18_stove)	C++14	100 / 100	18 ms	2796 KiB

stove

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

#define F first
#define S second
#define pb push_back
#define all(a) a.begin(), a.end()

typedef long long ll;
typedef pair<int, int> ii;

const int N = 1e5 + 5;
const int mod = 1e9 + 7;
int n, k;
ll res, a[N], b[N];

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

signed main()
{
    cin.tie(0)->sync_with_stdio(0);
    int t = 1;
    // cin >> t;
    while(t--) solve();
    return 0;
}

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