#include<stdio.h>
int main()
{
	
	char a[80];
	int i;
	gets(a);
	for(i=0;a[i]!='\0';i++)
	{
			if(a[i]>='A'&&a[i]<='Z')
				continue;
			if(a[i]==' '||a[i]==','||a[i]=='.'&&(a[i+1]>='a'&&a[i+1]<='z'))
				a[i+1]=a[i+1]-32;
	}
	puts(a);
	return 0;
}