Submission #559932

#	Time	Username	Problem	Language	Result	Execution time	Memory
559932		hibiki	Stove (JOI18_stove)	C++11	100 / 100	20 ms	1800 KiB

stove

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

#define pb push_back
#define f first
#define s second

int n,k;
vector<int> v;

int main()
{
    scanf("%d %d",&n,&k);
    int lst = 0, fi;
    scanf("%d",&lst);
    fi = lst;
    for(int i = 1; i < n; i++)
    {
        int a;
        scanf("%d",&a);
        v.pb(a - (lst + 1));
        lst = a;
    }

    sort(v.begin(),v.end());

    int all = lst + 1 - fi;
    for(int i = v.size() - 1, j = 0; i >= 0 && j < k - 1 ; i--, j++)
        all -= v[i];

    printf("%d\n",all);

    return 0;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |     scanf("%d %d",&n,&k);
      |     ~~~~~^~~~~~~~~~~~~~~
stove.cpp:15:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     scanf("%d",&lst);
      |     ~~~~~^~~~~~~~~~~
stove.cpp:20:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |         scanf("%d",&a);
      |         ~~~~~^~~~~~~~~

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