Submission #300127

#	Time	Username	Problem	Language	Result	Execution time	Memory
300127		CSQ31	Stove (JOI18_stove)	C++14	100 / 100	94 ms	2160 KiB

stove

#pragma GCC optimize("Ofast") 
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define sz(a) a.size()
#define all(a) a.begin(),a.end()
#define lb lower_bound
#define ub upper_bound
#define owo ios_base::sync_with_stdio(0);cin.tie(0);
#define MOD (ll)(1e8)
#define INF (ll)(1e18)
#define debug(...) fprintf(stderr, __VA_ARGS__),fflush(stderr)
#define time__(d) for(long blockTime = 0; (blockTime == 0 ? (blockTime=clock()) != 0 : false);\
debug("%s time : %.4fs\n", d, (double)(clock() - blockTime) / CLOCKS_PER_SEC))
typedef long long int ll;
typedef long double ld;
typedef pair<ll,ll> PII;
typedef pair<int,int> pii;
typedef vector<vector<int>> vii;
typedef vector<vector<ll>> VII;
ll gcd(ll a,ll b){if(!b)return a;else return gcd(b,a%b);}
int main()
{
	ll n,k;
	cin>>n>>k;
	vector<ll>t;
	int last = 0;
	ll ans = n;
	for(int i=0;i<n;i++){
		int v;cin>>v;
		if(i)t.pb(v-last-1);
		last = v;
	}
	sort(all(t));
	for(int i=0;i<n-k;i++)ans+=t[i];
	cout<<ans;
}

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