Submission #1179592

#	Time	Username	Problem	Language	Result	Execution time	Memory
1179592		user736482	Stove (JOI18_stove)	C++20	100 / 100	13 ms	1864 KiB

stove

#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define pb push_back
#define ff first
#define ss second
#define MOD 1000000009
#define INF 1000000019
#define INFL 1000000000000000099LL

ll n,q,s,t,a,b,c,ans,k;
ll co[1000007],dif[1000007];

int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);
    cin>>n>>k;
    for(ll i=0;i<n;i++){
        cin>>co[i];
    }
    for(ll i=0;i+1<n;i++){
        dif[i]=co[i+1]-co[i]-1;
        
    }
    sort(dif,dif+n-1);
    ll res=n;
    for(ll i=0;i<n-k;i++)res+=dif[i];
    cout<<res;

}

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