Submission #338903

#	Time	Username	Problem	Language	Result	Execution time	Memory
338903		Kerim	Stove (JOI18_stove)	C++17	100 / 100	26 ms	2280 KiB

stove

#include "bits/stdc++.h"
#define MAXN 100009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;

typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
int arr[MAXN];
int main(){
    //freopen("file.in", "r", stdin);
    int n,k;
    scanf("%d%d",&n,&k);
    for(int i=1;i<=n;i++)	
    	scanf("%d",arr+i);
    int ans=arr[n]-arr[1]+1;
    vector<int>v;
    for(int i=1;i<n;i++)
    	v.pb(arr[i+1]-arr[i]-1);
    sort(all(v));reverse(all(v));
    for(int i=0;i<k-1;i++)ans-=v[i];
    printf("%d\n",ans);
	return 0;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:24:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   24 |     scanf("%d%d",&n,&k);
      |     ~~~~~^~~~~~~~~~~~~~
stove.cpp:26:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   26 |      scanf("%d",arr+i);
      |      ~~~~~^~~~~~~~~~~~

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