Submission #260061

#	Time	Username	Problem	Language	Result	Execution time	Memory
260061		Bill_00	Stove (JOI18_stove)	C++14	100 / 100	84 ms	2168 KiB

stove

#include <bits/stdc++.h>
using namespace std;
int a[1000001],b[100001];
int main(){
	int n,k;
	cin >> n >> k;
	for(int i=1;i<=n;i++){
		cin >> a[i];
		if(i>1) b[i]=a[i]-a[i-1];
	}
	int niit=a[n]-a[1];
	if(k==1){
		cout << niit+1;
		return 0;
	}
	int sum=0;
	sort(b+2,b+n+1);
	for(int i=n;i>=n-k+2;i--){
		sum+=b[i];
	}
	cout << niit-sum+k;
}

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