제출 #1191793

#제출 시각아이디문제언어결과실행 시간메모리
1191793ereklezurashviliStove (JOI18_stove)C++20
100 / 100
33 ms2496 KiB

#include <bits/stdc++.h>
using namespace std;
#define int long long 
int n,t,a[300005],b[300005],c[300005],mx,ans,bans,k,dif;
vector <int> v;
signed main() {
    cin>>n>>k;
    for(int i=1; i<=n; i++){
        cin>>a[i];
    }
    for(int i=1; i<=n-1; i++){
        dif=a[i+1]-a[i]-1;
        v.push_back(dif);
    }
    sort(v.begin(),v.end());
    reverse(v.begin(),v.end());
    for(int i=0; i<k-1; i++){
        ans+=v[i];
    }
    
    cout<<a[n]-a[1]+1-ans<<endl;
	
}
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