void work()
{
char c=getchar();
while(c=='
') c=getchar();
while(c!='
')
{
a[++len]=c;
c=getchar();
}
}
void work()
{
char c=getchar();
while(c=='
') c=getchar();
while(c!='
')
{
a[++len]=c;
c=getchar();
}
}