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

int main()
{
	char s[1000],*p;
	gets(s);
	p = s;
	while(*p != '\0')
	{
		if(*p >= 'A' && *p <= 'Z')
			*p = *p + 32;
		p++;
	}
	puts(s);
	
	return 0;
}