Submission #1271792

#	Time	Username	Problem	Language	Result	Execution time	Memory
1271792		kiteyu	Stove (JOI18_stove)	C++17	100 / 100	13 ms	1096 KiB

stove

#include<bits/stdc++.h>
using namespace std;
using ll=long long;
const int N=1e5;
int n,k,a[N+5],b[N+5];
int main(){
    ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin>>n>>k;
    for(int i=1;i<=n;++i)
        cin>>a[i];
    int s=a[n]+1-a[1];
    for(int i=1;i<n;++i)
        b[i]=a[i+1]-a[i]-1;
    sort(b+1,b+n,greater<int>());
    for(int i=1;i<=k-1;++i)
        s-=b[i];
    cout<<s;
    return 0;
}

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