Submission #127206

#	Time	Username	Problem	Language	Result	Execution time	Memory
127206		hungcung	Stove (JOI18_stove)	C++14	100 / 100	27 ms	1144 KiB

stove

#include<bits/stdc++.h>
using namespace std;
int n,k,a[100005],res[100005],dem,ans;
int main(){
	scanf("%d %d",&n,&k);
	for(int i=0;i<n;i++){
		scanf("%d",&a[i]);
		if(i>=1){
			res[dem]=a[i]-a[i-1];
			dem++;
		}
	}
	sort(res,res+dem);
	ans=k;
	for(int i=0;i<n-k;i++){
		ans+=res[i];
	}
	printf("%d",ans);
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:5:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&n,&k);
  ~~~~~^~~~~~~~~~~~~~~
stove.cpp:7:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a[i]);
   ~~~~~^~~~~~~~~~~~

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