제출 #1137860

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1137860		vtnoo	Stove (JOI18_stove)	C++20	100 / 100	31 ms	2756 KiB

stove

#include<bits/stdc++.h>
#define pb push_back
#define snd second
#define fst first
#define forn(i,n) for(int i=0;i<n;++i)
#define forsn(i,UwU,n) for(int i=UwU; i<n; ++i)
#define SIZE(c) int((c).size())
#define all(x) x.begin(), x.end()
#define imp(x) {for(auto __:x)cout<<__<<" "; cout<<endl;}

#define DBG(x) cerr << #x << " = " << (x) << endl
#define RAYA cerr << "===============================" << endl

using namespace std;

typedef long long ll;
typedef pair<ll,ll> ii;
typedef vector<ll> vi;

inline void FIO() {ios_base::sync_with_stdio(false); cin.tie(NULL);}

int main(){FIO;	
	int n,k;cin>>n>>k;
	vi a(n), diff(n);
	forn(i,n)cin>>a[i];
	forsn(i,1,n){
		diff.pb(a[i]-a[i-1]);
	}
	sort(all(diff));
	reverse(all(diff));
	ll res=0;
	forn(i,k-1){
		res+=diff[i];
	}
	cout<<a[n-1]-a[0]-res+k<<endl;
}

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