#include <stdio.h>
#include <stdlib.h>

static unsigned char get = 0;
static unsigned char _stack[4];
static unsigned char *stack = _stack;
static unsigned char *state;

int main(){
	int c;
	while((c = getchar()) != EOF){
		if(stack == (unsigned char *)0)
			return (char)state;
		if(get){
			state = (char *)c;
			get = 0;
			continue;
		}
		switch(c){
	case ' ':
	case '\n':
	case '\r':
	case '\t':
	case '\v':
		break;
	case '!': state = stack; break;
	case '$': stack = state; state = (char *)*_stack; break;
	case '%': *stack = (char)state; break;
	case '^': state = (char *)0; break;
	case '+': ++state; break;
	case '-': --state; break;
	case '>': putchar((char)state); break;
	case '<': get = 1; break;
	case ':':
		  while((c = getchar()) != '\n')
			  if(c == EOF)
				  goto fin;
		  break;
		}
	}
fin:	return 1;
}