1449번: 수리공 항승

#include <cstdio>

#include <algorithm>

int main()

{

int n, l, count = 1;

scanf("%d %d", &n, &l);

int *num = new int[n];

for (int i = 0; i < n; ++i)

scanf("%d", &num[i]);

std::sort(&num[0], &num[n]);

for (int i = 1, point = num[0]; i < n; ++i)

if (num[i] >= point + l)

{

++count;

point = num[i];

}

delete[] num;

printf("%d", count);

}