Submission #48442

#	Time	Username	Problem	Language	Result	Execution time	Memory
48442		arman_ferdous	Stove (JOI18_stove)	C++17	100 / 100	32 ms	11172 KiB

stove

#include <bits/stdc++.h>
using namespace std;

const int N = 1e5+10;
long long arr[N], dif[N];

int main() {
	int n, k;
	scanf("%d %d", &n, &k);
	for(int i = 0; i < n; i++)
		scanf("%lld", &arr[i]);

	for(int i = 0; i+1 < n; i++)
		dif[i] = arr[i+1] - arr[i] - 1;
	sort(dif,dif+n-1,greater<int>());

	long long ans = arr[n-1] - arr[0] + 1;
	for(int i = 1; i < k; i++) 
		ans -= dif[i-1];
	
	printf("%lld", ans);
	return 0;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:9:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &k);
  ~~~~~^~~~~~~~~~~~~~~~~
stove.cpp:11:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld", &arr[i]);
   ~~~~~^~~~~~~~~~~~~~~~~

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