#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<string.h>
void main()
{
char s[80];
int i, a;
scanf("%s", &s);
a = strlen(s);
for (i = 0;i <= a;i++)
{
if (s[i] >= 'a'&&s[i] <= 'z')
{
printf("%c", s[i]);
}
if (s[i] >= 'A'&&s[i] <= 'Z')
{
printf("%c", s[i] + 32);
}
if (s[i]<'A' || (s[i]>'Z' && s[i]<'a') || s[i]>'z')
{
printf("\n");
}
}
}
#include<stdio.h>
#include<string.h>
void main()
{
char s[80];
int i, a;
scanf("%s", &s);
a = strlen(s);
for (i = 0;i <= a;i++)
{
if (s[i] >= 'a'&&s[i] <= 'z')
{
printf("%c", s[i]);
}
if (s[i] >= 'A'&&s[i] <= 'Z')
{
printf("%c", s[i] + 32);
}
if (s[i]<'A' || (s[i]>'Z' && s[i]<'a') || s[i]>'z')
{
printf("\n");
}
}
}