B001.c

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int k;
    int n;
    int *a;

    int early_day;      /* 候補の中で最も早い開始日  */
    int early_sum;      /* 連続するk日の訪問者数合計 */
    int campaign_count; /* キャンペーンを行った期間の候補数 */
    int i, j;
    int sum;

    scanf("%d %d", &n, &k);
    a = (int *)malloc(sizeof(int) * n);

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

    early_day      = -1;
    early_sum      = -1;
    campaign_count =  0;
    for (i = 0; i <= (n - k); i++) {
        sum = 0;
        for (j = 0; j < k; j++) {
            sum += a[i+j];
        }

        if (early_sum < sum) {
            early_day      = i + 1;
            early_sum      = sum;
            campaign_count = 1;
        } else if (early_sum == sum ) {
            campaign_count++;
        }
    }

    printf("%d %d\n", campaign_count, early_day);

    return 0;
}