Submission #919441

#	Time	Username	Problem	Language	Result	Execution time	Memory
919441		Keys	Stove (JOI18_stove)	C++14	100 / 100	21 ms	3368 KiB

stove

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) x.begin(), x.end()
signed main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int n,k;cin>>n>>k;vector<int>a(n);for(auto&i:a)cin>>i;
	sort(all(a));
	vector<int>d;for(int i=1;i<n;i++)d.push_back(max(0ll,a[i]-a[i-1]-1));
	sort(all(d)); reverse(all(d));
	int sub=0;for(int i=0;i<min(k-1,n-1);i++)sub+=d[i];
	cout<<a.back()-a[0]-sub+1<<endl;
}

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