Submission #1105873

#	Time	Username	Problem	Language	Result	Execution time	Memory
1105873		abushbandit_	Stove (JOI18_stove)	C++17	100 / 100	17 ms	3448 KiB

stove

#include "bits/stdc++.h"

using namespace std;

#define int long long
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define ff first
#define ss second
#define pb push_back

template<class T, class U> inline bool chmin(T& a, const U& b) { if (a > b) { a = b; return true; } return false; }
template<class T, class U> inline bool chmax(T& a, const U& b) { if (a < b) { a = b; return true; } return false; }

const int inf = 2e18;
const int mod = 1e9 + 7;
const int N = 2e5 + 1;

void solve(){
	
	int n,k;
	cin >> n >> k;
	int t[n];
	for(int i = 0;i < n;i++) {
		cin >> t[i];
	}
	//~ int ans = 0;
	vector<int> v;
	for(int i = 0;i < n - 1;i++) {
		v.pb(t[i + 1] - t[i] - 1);
	}
	sort(all(v));
	int ans = n;
	for(int i = 0;i < n - k;i++) {
		ans += v[i];
	}
	cout << ans << "\n";
	
	
}


signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);cout.tie(nullptr);
	int T = 1;
	//~ cin >> T;
	while(T--) {
		solve();
	}
	
}
	

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