Submission #55899

#	Time	Username	Problem	Language	Result	Execution time	Memory
55899		YaDon4ick	Stove (JOI18_stove)	C++14	100 / 100	45 ms	1656 KiB

stove

//By Don4ick
//#define _GLIBCXX_DEBUG

#include <bits/stdc++.h>

typedef long long ll;
typedef long double ld;
typedef unsigned int ui;

#define forn(i, n) for (int i = 1; i <= n; i++)
#define pb push_back
#define all(x) x.begin(), x.end()
#define y1 qwer1234

const double PI = acos(-1.0);
const int DIR = 4;
const int X[] = {1, 0, -1, 0};
const int Y[] = {0, 1, 0, -1};

using namespace std;

int main()
{
	//ios_base::sync_with_stdio(false);
	//cin.tie(NULL);
	//cout.tie(NULL);

	//freopen(".in", "r", stdin);
	//freopen(".out", "w", stdout);

	int n, k;
	scanf("%d%d", &n, &k);
	vector < int > a(n);
	for (int i = 0; i < n; i++)
		scanf("%d", &a[i]);
	sort(all(a));
	vector < int > b;
	for (int i = 1; i < n; i++)
		b.pb(a[i] - a[i - 1] - 1);
	sort(all(b));
	int ans = n;
	for (int i = 0; i < n - k; i++)
		ans += b[i];
	cout << ans << endl; 

	return 0;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:32:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &k);
  ~~~~~^~~~~~~~~~~~~~~~
stove.cpp:35:8: 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