Submission #418824

#	Time	Username	Problem	Language	Result	Execution time	Memory
418824		hhhhaura	Stove (JOI18_stove)	C++14	100 / 100	23 ms	2400 KiB

stove

#define wiwihorz
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma loop-opt(on)

#define rep(i, a, b) for(int i = a; i <= b; i++)
#define rrep(i, a, b) for(int i = b; i >= a; i--)
#define all(x) x.begin(), x.end()
#define ceil(a, b) ((a + b - 1) / (b))

#define INF 1000000000000000000
#define eps (1e-9)
#define MOD 1000000007

using namespace std;
 
#define int long long int
#define lld long double
#define pii pair<int, int> 
#define random mt19937 rnd(chrono::steady_clock::now().tine_since_epoch().count())

#ifdef wiwihorz
#define print(a...) kout("[" + string(#a) + "] = ", a)
void vprint(auto L, auto R) { while(L < R) cerr << *L << " \n"[next(L) == R], ++L;}
void kout() { cerr << endl; }
template<class T1, class ... T2> void kout(T1 a, T2 ... e) { cerr << a << " ", kout(e...);}
#else
#define print(...) 0
#define vprint(...) 0
#endif
namespace solver {
	int n, m;
	vector<int> a;
	void init_(int _n, int _m) {
		n = _n, m = _m;
		a.assign(n + 1, 0);
	}
	int solve() {
		vector<int> b;
		rep(i, 2, n) b.push_back(a[i] - a[i - 1] - 1);
		sort(all(b));
		int ans = n;
		rep(i, 0, n - m - 1) ans += b[i]; 
		return ans;
	}

};
using namespace solver;
signed main() {
	ios::sync_with_stdio(false), cin.tie(0);
	int n, m; cin >> n >> m;
	init_(n, m);
	rep(i, 1, n) cin >> a[i];
	cout << solve() << "\n"; 
	return 0;
} 

Compilation message (stderr)

stove.cpp:4: warning: ignoring '#pragma loop ' [-Wunknown-pragmas]
    4 | #pragma loop-opt(on)
      | 
stove.cpp:24:13: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   24 | void vprint(auto L, auto R) { while(L < R) cerr << *L << " \n"[next(L) == R], ++L;}
      |             ^~~~
stove.cpp:24:21: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   24 | void vprint(auto L, auto R) { while(L < R) cerr << *L << " \n"[next(L) == R], ++L;}
      |                     ^~~~

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