Submission #837198

#	Time	Username	Problem	Language	Result	Execution time	Memory
837198		mngoc	Stove (JOI18_stove)	C++14	100 / 100	36 ms	2028 KiB

stove

#include<bits/stdc++.h>
#define forin(i,a,b) for(int i=a;i<=b;i++)
#define forde(i,a,b) for(int i=a;i>=b;i--)
using namespace std;
using ll = long long;
const int N=1e5+10;
int a[N];
int tgc[N];
int n,k;
int main()
{
    cin>>n>>k;
    forin(i,1,n) cin>>a[i];
    forin(i,2,n)
    {
        tgc[i-1]=a[i]-(a[i-1]+1);
    }

    sort(tgc+1,tgc+n);
    //forin(i,1,n) cout<<tgc[i]<<" ";
    ll res=0;
    forin(i,1,n-k)
    {
        res+=tgc[i];
    }
    //cout<<res;
    cout<<res+n;
}

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