Submission #66726

#	Time	Username	Problem	Language	Result	Execution time	Memory
66726		MrTEK	Stove (JOI18_stove)	C++14	100 / 100	44 ms	1640 KiB

stove

#include <bits/stdc++.h>

using namespace std;
#define mp make_pair
#define pb push_back
#define len(a) (int)a.size()
#define fi first
#define sc second
#define d1(w) cerr<<#w<<":"<<w<<endl;
#define d2(w,c) cerr<<#w<<":"<<w<<" "<<#c<<":"<<c<<endl;
#define d3(w,c,z) cerr<<#w<<":"<<w<<" "<<#c<<":"<<c<<" "<<#z<<":"<<z<<endl;
#define left ind+ind
#define right ind+ind+1
#define mid (l+r)/2
#define FAST_IO ios_base::sync_with_stdio(false);
#define endl '\n'

typedef long long int ll;

const int maxn = 620;
const long long LINF = 1e18;
const int LOG = 31;
const int INF = 1e9;
const int N = 1e5 + 5;
const int M = 1e4 + 5;
const int SQ = 350;
const int MOD = 998244353;

typedef pair <int,int> pii;

int n,k,t[N];

long long ans;

vector <int> v;

int main() {
	
	scanf("%d %d",&n,&k);

	k--;

	for (int i = 1 ; i <= n ; i++) scanf("%d",&t[i]);

	sort(t + 1 , t + n + 1);

	for (int i = 1 ; i < n ; i++) {
		v.pb(t[i + 1] - t[i]);
	}
	sort(v.begin(),v.end());
	reverse(v.begin(),v.end());
	for (int i = 0 ; i < k ; i++) ans += v[i];
	printf("%lld\n",(t[n] - t[1] + 1) - ans + k);
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:39:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&n,&k);
  ~~~~~^~~~~~~~~~~~~~~
stove.cpp:43:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (int i = 1 ; i <= n ; i++) scanf("%d",&t[i]);
                                 ~~~~~^~~~~~~~~~~~

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