제출 #311476

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
311476		MSAAD	Stove (JOI18_stove)	C++17	20 / 100	1 ms	512 KiB

stove

/*
NAME:
 ___   _      _   ___  
/ __| /_\    /_\ |   \ 
\__ \/ _ \  / _ \| |) |
|___/_/ \_\/_/ \_\___/ 

lang: 
  ___   _      _   
 / __)_| |_  _| |_ 
( (__(_   _)(_   _)
 \___) |_|    |_|  

*/
#define _USE_MATH_DEFINES
#include <array>
#include <cassert>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <string>
#include <sstream>
#include <vector>
#include <queue>
#include <stack>
#include <list>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <algorithm>
#include <complex>
#include <cmath>
#include <numeric>
#include <bitset>
#include <functional>
#include <random>
#include <ctime>
 
using namespace std;
 
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
template <typename Arg1>
void __f(const char* name, Arg1&& arg1){
  cerr << name << ": " << arg1 << endl;
}
template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args){
  const char* comma = strchr(names + 1, ',');
  cerr.write(names, comma - names) << ": " << arg1 << " |";
  __f(comma + 1, args...);
}

#define mp make_pair
#define pb push_back
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(),x.end()

typedef long long ll;
typedef long l;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<l> vl;
typedef vector<ll> vll;

const int INF = 1 << 29;
const int MOD = 1e9 + 7;
const int dx[]={0,1,0,-1};
const int dy[]={1,0,-1,0};

mt19937 mrand(random_device{}());
int rnd(int x) { return mrand() % x; }
 
void solve(){
	int n,k;
	cin>>n>>k;
	ll a[n],b[n];
	pair<ll,ll>p[n];
	for(int i=0;i<n;i++) { cin>>b[i]; a[i]=b[i]; }
	p[0]=make_pair(b[0],0);
	for(int i=1;i<n;i++)
		p[i]=make_pair(b[i]-b[i-1],i);
	sort(p,p+n);
	for(int i=n-1;(i>=0 && k>1);(i-- && k--)){
	//	cout<<b[p[i].second]<< " ";
		b[p[i].second]=0;
	}
	//for(int i=1;i<n;i++) cout<<b[i]-b[i-1]<<" ";
	ll ans=1,cnt=0,j=1;
	while(j<n){
		if(b[j]!=0 && j){
			ans+=(a[j]-a[j-1]);
			cnt++;
		}
		else{
			ans++;
			cnt=0;
		}
	//	cout<<ans<<" ";
		j++;
	}
	cout<<ans<<endl;
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);

	solve();

	return 0;
}

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