Submission #547024

#	Time	Username	Problem	Language	Result	Execution time	Memory
547024		tmn2005	Stove (JOI18_stove)	C++17	100 / 100	38 ms	6760 KiB

stove

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

using namespace __gnu_pbds;
using namespace std;
typedef long long ll;

#define fr first
#define sc second

#define mk make_pair
#define pb push_back
#define pob pop_back
#define pf push_front
#define pof pop_front

#define int long long
#define pii pair<int,int>
#define piii pair<int,pii>

#define all(s) s.begin(), s.end()
#define allr(s) s.rbegin(), s.rend()

#define NeedForSpeed ios::sync_with_stdio(0), cin.tie(0)
#define ordered_set tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update>
const int N = 1e5 + 12;
int n, m, k, a[N], b, c, d;

void solve(){
	cin>>n>>k;k--;
	for(int i=1; i<=n; i++){
		cin>>a[i];
	}
	multiset<int> s;
	for(int i=1; i<n; i++){
		s.insert(a[i+1] - a[i] - 1);
	}
	int res = a[n] - a[1] + 1;
	while(k--){
		res -= *s.rbegin();
		s.erase(--s.end());
	}
	cout<<res<<"\n";
}
main(){
	NeedForSpeed;
	int T = 1;
//	cin >> T;
	while(T--){
		solve();
	}
	return 0;
}

Compilation message (stderr)

stove.cpp:46:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   46 | main(){
      | ^~~~

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