Submission #338284

#	Time	Username	Problem	Language	Result	Execution time	Memory
338284		markussie	Stove (JOI18_stove)	C++17	100 / 100	29 ms	2156 KiB

stove

#include <cstdio>
#include <algorithm>

using namespace std;

const int mxn = 1e5;

int a[mxn+1];
int d[mxn+1];

int main()
{
  int n, k;
  
  scanf("%d%d", &n, &k);

  for(int i = 0; i < n; ++i)
    scanf("%d", &a[i]);

  sort(a, a + n);
  
  long long ans = a[n-1] - a[0] + 1;
  for(int i = 1; i < n; ++i)
    d[i-1] = a[i] - a[i-1] - 1;
  sort(d, d + n-1);

  for(int i = 1; i < k; ++i)
    ans -= d[n-1-i];
  printf("%lld", ans);
  return 0;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:15:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   15 |   scanf("%d%d", &n, &k);
      |   ~~~~~^~~~~~~~~~~~~~~~
stove.cpp:18:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   18 |     scanf("%d", &a[i]);
      |     ~~~~~^~~~~~~~~~~~~

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