Submission #1289740

#	Time	Username	Problem	Language	Result	Execution time	Memory
1289740		haha	Stove (JOI18_stove)	C++20	100 / 100	15 ms	1480 KiB

stove

#include<bits/stdc++.h>
#define f first
#define s second
#define ll long long
using namespace std;
const int maxn=1e5+5;
const int MOD=1e9+7;

int n,k;
int a[maxn];
vector<int> vec;

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin>>n>>k;
    for(int i=1;i<=n;i++) cin>>a[i];
    for(int i=1;i<n;i++) vec.push_back(a[i+1]-a[i]);
    sort(vec.begin(),vec.end());
    if(n<=k) cout<<n;
    else{
        int ans=n;
        for(int i=0;i<n-k;i++){
            ans+=vec[i]-1;
        }
        cout<<ans;
    }
}

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