Submission #554451

#	Time	Username	Problem	Language	Result	Execution time	Memory
554451		n0sk1ll	Stove (JOI18_stove)	C++14	100 / 100	22 ms	2284 KiB

stove

#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>

#define FAST ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);cerr.tie(0)
#define mp make_pair
#define xx first
#define yy second
#define pb push_back
#define pf push_front
#define popb pop_back
#define popf pop_front
#define all(x) (x).begin(),(x).end()
#define erase_uni(x) x.erase(unique(all(x)),x.end())
#define inv(n) power((n), mod - 2)
#define ff(i,a,b) for (int (i) = (a); (i) < (b); (i)++)
#define fff(i,a,b) for (int (i) = (a); (i) <= b; (i)++)
#define bff(i,a,b) for (int (i) = (b)-1; (i) >= (a); (i)--)
#define bfff(i,a,b) for (int (i) = (b); (i) >= (a); (i)--)
#define sum_overflow(a,b) __builtin_add_overflow_p ((a), (b), (__typeof__ ((a) + (b))) 0)
#define mul_overflow(a,b) __builtin_mul_overflow_p ((a), (b), (__typeof__ ((a) + (b))) 0)

using namespace std;
long double typedef ld;
unsigned int typedef ui;
long long int typedef li;
pair<int,int> typedef pii;
pair<li,li> typedef pli;
pair<ld,ld> typedef pld;
vector<vector<int>> typedef graph;
unsigned long long int typedef ull;
//const int mod = 998244353;
const int mod = 1000000007;

/*using namespace __gnu_pbds;
template <class T> using oset = tree<T, null_type,less<T>, rb_tree_tag,tree_order_statistics_node_update>;
template <class T> using omset = tree<T, null_type,less_equal<T>, rb_tree_tag,tree_order_statistics_node_update>;*/







//Note to self: Check for overflow

int a[100005];

int main()
{
    FAST;

    int n,k; cin>>n>>k;
    ff(i,0,n) cin>>a[i];
    vector<int> b;
    ff(i,1,n) b.pb(a[i]-a[i-1]-1);
    sort(all(b),greater<int>());

    li ans=n;
    for (int i=n;i>k;i--)
    {
        ans+=b.back();
        b.popb();
    }

    cout<<ans<<"\n";
}

//Note to self: Check for overflow

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:16:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   16 | #define ff(i,a,b) for (int (i) = (a); (i) < (b); (i)++)
      |                            ^
stove.cpp:54:5: note: in expansion of macro 'ff'
   54 |     ff(i,0,n) cin>>a[i];
      |     ^~
stove.cpp:16:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   16 | #define ff(i,a,b) for (int (i) = (a); (i) < (b); (i)++)
      |                            ^
stove.cpp:56:5: note: in expansion of macro 'ff'
   56 |     ff(i,1,n) b.pb(a[i]-a[i-1]-1);
      |     ^~

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