/*
题目:
XML有缩进,并且会在之前的缩进基础上缩进几个空格,现在问缩进k个空格的标签
分析:
模拟队列,及时更新空格即可
*/
#include <iostream>
#include <cstdio>
#include <cstring>
#include <vector>
using namespace std;
const int X = 20005;
int n,k;
char s[105];
char p[105];
vector<int> vec[X];
struct node
{
char s[105];
int num;
}q[X],ans[X];
int top,ret;
void check()
{
if(s[0]!='<')
return;
if(s[1]=='/')
{
top--;
return;
}
else
{
int temp = 0;
int cnt = 0;
bool ok = false;;
for(int i=1;s[i];i++)
{
if(ok)
{
if(s[i]=='>')
break;
temp = temp*10+s[i]-'0';
}
else if(s[i]!=',')
p[cnt++] = s[i];
if(s[i]==',')
{
p[cnt] = '\0';
ok = true;
}
}
if(top)
q[top].num = q[top-1].num+temp;
else
q[top].num = temp;
strcpy(q[top].s,p);
strcpy(ans[ret].s,p);
ans[ret].num = q[top].num;
vec[ans[ret].num].push_back(ret);
ret++;
top++;
}
}
int main()
{
freopen("sum.in","r",stdin);
while(scanf("%d%d ",&n,&k)!=EOF)
{
for(int i=0;i<n;i++)
vec[i].clear();
top = 0;
ret = 0;
for(int i=0;i<n;i++)
{
gets(s);
check();
}
int len = vec[k].size();
int x;
cout<<len<<endl;
for(int i=0;i<len;i++)
{
x = vec[k][i];
printf("%s\n",ans[x].s);
}
}
return 0;
}