Submission #955592

#	Time	Username	Problem	Language	Result	Execution time	Memory
955592		horiseun	Stove (JOI18_stove)	C++17	0 / 100	0 ms	348 KiB

stove

#include <iostream>
#include <vector>
#include <tuple>
#include <set>
#include <map>
#include <stack>
#include <queue>
#include <deque>
#include <cmath>
#include <array>
#include <random>
#include <climits>
#include <cassert>
#include <algorithm>
using namespace std;

template<typename A, typename B> ostream& operator << (ostream &os, const pair<A, B> &p) { return os << '(' << p.first << ", " << p.second << ')'; }
template<typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type> ostream& operator << (ostream &os, const T_container &v) { os << '{'; string sep; for (const T &x : v) { os << sep << x, sep = ", "; } return os << '}'; }
void D_out() { cerr << endl; }
template<typename Head, typename... Tail> void D_out(Head H, Tail... T) { cerr << ' ' << H; D_out(T...); }

#ifdef DEBUG
	#define D(...) cerr << '(' << #__VA_ARGS__ << "):", D_out(__VA_ARGS__)
#else
	#define D(...)
#endif

//#define int long long
#define ll long long
#define ld long double
#define f first
#define s second
#define sz(x) ((int) x.size())
#define all(x) (x).begin(), (x).end()

const ll MOD = 1e9 + 7;
const ll INF = 1e18;

int n, k, t[100005], ans;
vector<int> diff;

void solve() {
	cin >> n >> k;
	for (int i = 0; i < n; i++) {
		cin >> t[i];
		ans =  max(ans, t[i]);
		if (i) diff.push_back(t[i] - t[i - 1] - 1);
	}
	sort(diff.begin(), diff.end(), greater<int>());
	for (int i = 0; i < k - 1; i++) {
		ans -= diff[i];
	}
	cout << ans << "\n";
}

signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);	

	int t = 1; //cin >> t;
	for (int tc = 1; tc <= t; tc++) {
		//cout << "Case #" << tc << ": ";
		solve();
	}
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50