Submission #752236

#	Time	Username	Problem	Language	Result	Execution time	Memory
752236		vjudge1	Stove (JOI18_stove)	C++17	100 / 100	26 ms	2848 KiB

stove

#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#define ll long long
#define ii pair<ll, ll>
#define vhg ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define pp pair <long long,long long>
using namespace std;
//-------------------------------
ll a[100002], b[100002];
//-------------------------------
int main(){
    vhg;
    int n,k;
    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;
    }
    sort (b+1,b+n);
    long long kq=n;
    for (int i=1;i<=n-k;i++) kq=kq+b[i];
    cout << kq;
}

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