#include<unistd.h>
#include<ctype.h>

int main(){
	char buffer[256];
	ssize_t readlen;

	while(1){	
		readlen = read(0, buffer, 256);
		if(readlen < 1)
			break;
		for(int i = 0; i < readlen; i++)
			buffer[i] = toupper(buffer[i]);	
		write(1, buffer, readlen);
	}

	return 0;
}