Submission #93507

#	Time	Username	Problem	Language	Result	Execution time	Memory
93507		Pancake	Stove (JOI18_stove)	C++14	0 / 100	2 ms	376 KiB

stove

#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,sse3,sse4,popcnt,abm,mmx")

#include <bits/stdc++.h>	
#include <stdio.h>    
 
using namespace std;
     
#define F first
#define S second
#define lb lower_bound          	    
#define ub upper_bound
#define pb push_back
#define pf push_front    
#define ppb pop_back
#define mp make_pair
#define bpp __builtin_popcount                                                                                        
#define sqr(x) ((x) * (x))
#define al 0x3F3F3F3F
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define in insert
#define ppf pop_front
#define endl '\n'
#define int long long
 
typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
typedef pair <int, int> pii;
 
const int mod = (int)1e9 + 7;                                  
const int N = (int)2e5 + 123;
const ll inf = (ll)3e18 + 1;
                                       
const double pi = acos(-1.0);
const double eps = 1e-7;
const int dx[] = {0, 0, 1, 0, -1};							
const int dy[] = {0, 1, 0, -1, 0};  		
 
int n, k, res, a[N];
vector <int> ans;

inline void boost () {
	ios_base :: sync_with_stdio (NULL);
	cin.tie (NULL), cout.tie (NULL);          
}

inline void Solve () {
	cin >> n >> k;
	for (int i = 1; i <= n; i ++) cin >> a[i];
	for (int i = 1; i < n; i ++) ans.pb (a[i + 1] - a[i] + 1);
	sort (all (ans));
	int l = 0;
	for (int i = 0; i < sz (ans); i ++) {
		if (n - l > k + 1) res += ans[i];				
		else {
			res += 2;
		}
		l ++;
	}
	cout << res;
}
                  
main () {                                       
//	freopen (".in", "r", stdin);    
//	freopen (".out", "w", stdout); 	          
	boost ();
	int tt = 1;
//	cin >> tt;   
	while (tt --) {
		Solve ();
	}                                               
	return 0;      
}         	                                                    

Compilation message (stderr)

stove.cpp:65:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main () {                                       
       ^

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