#include <stdio.h>

int f(int *a, int n, int k) {
    int l = 0, r = -1;
    int ans = 0;
    int curr = 1;
    for (int i = 0; i < n; ++i) {
        if (i == n - 1) {
            if (curr > k) {
                for (int j = 0; j < curr; ++j, ++ans)
                    a[l++] = a[i];
                r = i;
                curr = 1;
                continue;
            }
            r = i;
            continue;
        }

        if (a[i] == a[i + 1]) {
            ++curr;
            continue;
        }
        if (curr > k) {
            for (int j = 0; j < curr; ++j, ++ans)
                a[l++] = a[i - 1];
            r = i - 1;
            curr = 1;
            continue;
        }
        r = i - 1;
        curr = 1;
    }
    //printf("%d %d\n", l, r);
    return n - ans;
}

void print_arr(int *a, int n) {
    for (int i = 0; i < n; ++i)
        printf("%d ", a[i]);
    printf("\n");
}

int main(void) {
    int n = 15;
    int k = 2;
    int a[] = {1,1,2,1,2,2,3,4,5,6,7,11,11,11,12};
    int ans = f(a, n, k);
    print_arr(a, n - ans);
    printf("%d\n", ans);
    return 0;
}