Submission #127299

#	Time	Username	Problem	Language	Result	Execution time	Memory
127299		josefu_	Stove (JOI18_stove)	C++14	100 / 100	28 ms	2328 KiB

stove

#define SuC_VaT              Doc_code_ban_khac
#define Nhan_cach_bang_0     Doc_code_ban_khac

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> ii;
typedef pair<ll, ii > iii;

const int kn = 4e5 + 5, N = 1e5+5;
const ll mod = 1e9 + 7, mod2 = 1e9+9;
const ll base = 31, base1 = 37;

#define x first
#define y second
#define lwb lower_bound
#define upb upper_bound

#define pb push_back
#define popb pop_back
#define pf push_front
#define popf pop_front

#define log2(X) (31-__builtin_clz(X))
#define log2ll(X) (63-__builtin_clzll(X))
#define numbit(X) __builtin_popcount(X)
#define numbitll(X) __builtin_popcountll(X)

#define ms(val,a) memset(a,val,sizeof(a))

#define ff(i,n) for(int i=1;i<=n;i++)
#define _ff(i,n) for(int i=n;i>=1;i--)
#define f(i,a,b) for(int i = a; i <=b; i++)
#define _f(i,a,b) for(int i = b; i>=a;i--)

#define In(X) freopen(X,"r",stdin)
#define Out(X) freopen(X,"w",stdout)

#define ios ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

int n, ans, k, a[kn] ;
vector<int> uvu;

signed main()
{
	scanf("%d %d",&n, &k);
	ans = n;
	ff(i,n) scanf("%d",&a[i]);
	f(i,2,n) uvu.pb(a[i]-a[i-1]-1);
	sort(uvu.begin(),uvu.end());
	for(int i = 0; i < n-k; i++) ans += uvu[i];
	printf("%d",ans);
	
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:49:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&n, &k);
  ~~~~~^~~~~~~~~~~~~~~~
stove.cpp:51:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  ff(i,n) scanf("%d",&a[i]);
          ~~~~~^~~~~~~~~~~~

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