#include <stdio.h>
#include <stdlib.h>
#define MAX 101
int main(void) {
int N = 0, M = 0, max = 0, check[MAX];
scanf("%d %d", &N, &M);
for (int i = 0; i < N; i++) {
scanf("%d", &check[i]);
}
for (int i = 0; i < N; i++) {
if (check[i] >= M) {
int res = 0;
for (int j = i; j < N; j++) {
if (check[j] >= M) {
res++;
} else {
if (res > max) {
max = res;
}
break;
}
}
}
}
printf("%d", (max == 0) ? -1 : max);
return 0;
}