text: #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  
  int		main(void) {
  	char	buffer[100];
  	int		i;
  
  	i = 0;
  	fgets(&buffer, 100, stdin);
  	while (i < strlen(buffer)) {
  		if (buffer[i] > '@' && buffer[i] < '[')
  			buffer[i] = buffer[i] ^ 32;
  		i++;
  	}
  	printf(buffer);
  	exit(0);
  	return 0;
  }
  