Submission #94972

#	Time	Username	Problem	Language	Result	Execution time	Memory
94972		psmao	Stove (JOI18_stove)	C++14	100 / 100	25 ms	2344 KiB

stove

#include <bits/stdc++.h>
using namespace std;

#define fo(i,s,t) for(int i = s; i <= t; ++ i)
#define fd(i,s,t) for(int i = s; i >= t; -- i)
#define bf(i,s) for(int i = head[s]; i; i = e[i].next)
#define mp make_pair
#define fi first
#define se second
#define pii pair<int,int>
#define pb push_back
#define VI vector<int>
#define sf scanf
#define pf printf
#define fp freopen
#define SZ(x) ((int)(x).size())
#ifdef MPS
#define D(x...) printf(x)
#else
#define D(x...)
#endif
typedef long long ll;
typedef double db;
typedef unsigned long long ull;
const int inf = 1<<30;
const ll INF = 1ll<<60;
const db Inf = 1e20;
const db eps = 1e-9;

void gmax(int &a,int b){a = (a > b ? a : b);}
void gmin(int &a,int b){a = (a < b ? a : b);}

const int maxn = 100050;

int n, K, T[maxn], v;

int main()
{
	#ifdef MPS
		fp("1.in","r",stdin);
		fp("1.out","w",stdout);
	#endif
	sf("%d%d",&n,&K); -- K;
	fo(i,1,n) sf("%d",&T[i]);
	VI bag;
	fo(i,2,n) bag.pb(T[i]-T[i-1]);
	sort(bag.begin(),bag.end());
	reverse(bag.begin(),bag.end());
	fo(i,K,SZ(bag)-1) v += bag[i];
	pf("%d\n",v+K+1);
	return 0;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:43:4: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  sf("%d%d",&n,&K); -- K;
    ^
stove.cpp:44:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  fo(i,1,n) sf("%d",&T[i]);
              ^

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