Submission #1049716

#	Time	Username	Problem	Language	Result	Execution time	Memory
1049716		vjudge1	Stove (JOI18_stove)	C++17	0 / 100	0 ms	344 KiB

stove

#include <bits/stdc++.h>

using namespace std;
//abeke

typedef long long ll;
typedef unsigned long long ull;

#define all(x) x.begin(), x.end()
//#define sz(x) (int)x.size()
#define pb push_back
#define speed ios::sync_with_stdio( false); cin.tie(nullptr); cout.tie(0);
#define forn(i, n) for(int i = 0; i < int(n); i++)
#define eb emplace_back
#define nl '\n'
#define f first
#define s second
#define gcd __gcd
#define ins insert
const int inf = INT_MAX;
const int mod = 1e9+7;
const int N = 2e5+5;

void solve() {
    int n, k;
    cin >> n >> k;
    vector<int> a(n);
    forn (i, n) cin >> a[i];
    vector<int> v;
    int ans = a[n-1];
    for (int i = 1; i < n; i++) {
        v.pb(a[i]-a[i-1]-1);
    }
    sort(all(v));
    k--;
    for (int i = v.size()-1; i >= 0 && k > 0; i--) {
        ans -= v[i];
        k--;
    } cout << ans << nl;
}
int main()
{
    speed;
    solve();
    return 0;
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50