#include <stdio.h>
#include<stdlib.h>
 
int no_search(int a[],int n,int x){//no_search関数の挿入
	int ret=-1;//常に-1を返す
	return ret;//
}
 
int main(void) {
	// your code goes here
	int n,x,i;
	int *a;
	int ans=-1;
	scanf("%d%d",&n,&x);//n,xに入力させる
 
	a=(int*)malloc(sizeof(int)*n);//aの動的確保をする
	if(a==NULL){//エラー処理
		printf("ERROR");
		return -1;//エラーだとしても-1を返す
	}
	for(i=0;a[i]<=n;i++){
		scanf("%d",&a[i]);//動的確保したaの配列に入力させる
	}
	ans=no_search(a[i],n,x);
	if(ans!=-1){
		printf("a[%d]%d\n",ans,a[ans]);
	}else{
		printf("not found\n");
	}
	free(a);
	return 0;
}
 

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