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

struct Node {
    int key;
    struct Node *right, *left, *parent;
};
typedef struct Node Node;

Node *root, *NIL;

void insert(int k) {
    Node *y = NIL;
    Node *x = root;
    Node *z;
    
    z = (Node *)malloc(sizeof(Node));
    z->key   = k;
    z->left  = NIL;
    z->right = NIL;
    
    while(x != NIL) {
        y = x;
        if(z->key < x->key) {
            x = x->left;
        } else {
            x = x->right;
        }
    }
    
    z->parent = y;
    if(y == NIL) {
        root = z;
    } else {
        if( z->key < y->key) {
            y->left = z;
        } else {
            y->right = z;
        }
    }
}

Node * find(Node *u, int k) {
    while(u != NIL && k != u->key) {
        if(k < u->key) u = u->left;
        else u = u->right;
    }
    return u;
}

void inorder(Node *u) {
    if(u == NIL) return;
    inorder(u->left);
    printf(" %d",u->key);
    inorder(u->right);
}
void preorder(Node *u) {
    if(u == NIL) return;
    printf(" %d",u->key);
    preorder(u->left);
    preorder(u->right);
}
    
int main(void) {
    int n, i, x;
    char com[16];
    scanf("%d",&n);
    
    for(i=0;i<n;i++) {
        scanf("%s",com);
        if(com[0] == 'f') {
            scanf("%d",&x);
            Node *t = find(root,x);
            if(t != NIL) printf("yes\n");
            else printf("no\n");
        } else if(!strcmp(com,"insert")) {
            scanf("%d",&x);
            insert(x);
        } else if(!strcmp(com,"print")) {
            inorder(root);
            printf("\n");
            preorder(root);
            printf("\n");
        }
    }

    return 0;
}
