Submission #1033713

#	Time	Username	Problem	Language	Result	Execution time	Memory
1033713		hehebjp123	Stove (JOI18_stove)	C++14	100 / 100	14 ms	2004 KiB

stove

#include<bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define ii pair<ll,ll>
#define iii pair<ii,ll>
#define pb push_back
using namespace std;
const ll N=1e5+9;
const ll mod=1e9+7;
ll n,k,a[N],b[N],i;
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
cin>>n>>k;
for(i=1;i<=n;i++) cin>>a[i];
ll res=a[n]-a[1]+1;
for(i=2;i<=n;i++) {b[i-1]=a[i]-a[i-1]-1;}
sort(b+1,b+n,greater<ll>());
for(i=1;i<k;i++)
    res-=b[i];
cout<<res;
}
/*
4 2
1 2 3 4 5 6 7 8
*/

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