#include <stdio.h>
#include <stdlib.h>
 
int linear_search(int a[], int n, int x){
	int ret=-1;
	for(int i=0; i<n; i++){
		if(a[i]==x){
			ret = i;
			break;
		}
	}
	return ret; 
}
 
int main(void) {
	int n,x,ans;
	int *a;
	scanf("%d %d",&n,&x);
 
	a = (int*)malloc(sizeof(int)*n);
	if(a==NULL){
		printf("ERROR\n");
		return -1;
	}
 
	for(int i=0; i<n; i++){
		scanf("%d",&a[i]);
	}
 
	ans = linear_search(a,n,x);
	if(ans!=-1) printf("ans[%d]=%d\n",ans,a[ans]);
	else printf("not found\n");
 
	free(a); //忘れずに！！
	return 0;
}

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