Submission #466968

#	Time	Username	Problem	Language	Result	Execution time	Memory
466968		jamezzz	Stove (JOI18_stove)	C++17	100 / 100	29 ms	2260 KiB

stove

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

#ifdef DEBUG
#define dbg(...) printf(__VA_ARGS__);
#else
#define dbg(...)
#endif
#define sf scanf
#define pf printf
#define fi first
#define se second
#define pb emplace_back
#define ppb pop_back
#define sz(x) (int)x.size()
#define mnto(x,y) x=min(x,(__typeof__(x))y)
#define mxto(x,y) x=max(x,(__typeof__(x))y)
#define INF 1023456789
#define LINF 1023456789123456789
#define all(x) x.begin(), x.end()
typedef long long ll;
typedef long double ld;
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
typedef tuple<int, int, int> iii;
typedef tuple<int, int, int, int> iiii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<pll> vll;
mt19937 rng(time(0));

int n,k,t[100005],ans;
vi v;

int main(){
	sf("%d%d",&n,&k);
	for(int i=0;i<n;++i)sf("%d",&t[i]);
	for(int i=1;i<n;++i)v.pb(t[i]-t[i-1]-1);
	sort(all(v));
	ans=t[n-1]+1-t[0];
	for(int i=0;i<k-1;++i)ans-=v.back(),v.pop_back();
	pf("%d\n",ans);
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:36:4: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |  sf("%d%d",&n,&k);
      |    ^
stove.cpp:37:24: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |  for(int i=0;i<n;++i)sf("%d",&t[i]);
      |                        ^

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