Submission #91257

#	Time	Username	Problem	Language	Result	Execution time	Memory
91257		Alisabzi	Stove (JOI18_stove)	C++14	100 / 100	23 ms	10280 KiB

stove

#include<bits/stdc++.h>
using namespace std ;
typedef long long ll ;
#define F first 
#define S second
const ll N = 100411 ;
vector < int > a ; 
int n, k, b, x;
int main ()
{
	scanf("%d%d", &n, &k) ;
	scanf("%d", &b) ;
	for(int i = 2 ; i <= n ; i ++){
		scanf("%d", &x) ;
		a.push_back(x-b) ;
		b = x ; 
	}
	if(n == 1)
		return cout << 1 , 0 ;
	sort(a.begin(), a.end()) ;
	ll ans = n ;
	for(int i = 0 ; i < n-k ; i ++){
		ans += a[i]-1 ;
	}
	cout << ans ;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:11:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &k) ;
  ~~~~~^~~~~~~~~~~~~~~~
stove.cpp:12:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &b) ;
  ~~~~~^~~~~~~~~~
stove.cpp:14:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &x) ;
   ~~~~~^~~~~~~~~~

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