#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/param.h>

int main(int argc,char *argv[]) {
 int i,j,k,l;
 char *s=argv[1];
 char *out=malloc(MAXPATHLEN+1);
 switch(s[0]) {
  case '/':
   strcpy(out,"/");
   break;
  case '~':
   strcpy(out,(char *)getenv("HOME"));
   break;
  default:
   getcwd(out,MAXPATHLEN);
   strcat(out,"/");
 }
 strcat(out,s);
 l=strlen(out)-1;
 if(out[l] == '.' && out[l-1] == '/') strcat(out,"/");
 if(out[l] == '.' && out[l-1] == '.' && out[l-2] == '/') strcat(out,"/");
 for(i=0;out[i];i++) {
  if(out[i] == '/' && out[i+1] == '.' && out[i+2] == '.' && out[i+3] == '/') {
   for(j=i-1;out[j] != '/';j--) {
   }
   for(k=j;out[k];k++) {
    out[k]=out[k+(i-j)+3];
   }    
   i=0;
  }
  if(out[i] == '/' && out[i+1] == '.' && out[i+2] == '/') {
   for(j=i;out[j];j++) {
    out[j]=out[j+2];
   }   
   i=0;
  }
  if(out[i] == '/' && out[i+1] == '/') {
   //leftshift over it.
   for(j=i;out[j];j++) {
    out[j]=out[j+1];
   }
   i=0;
  }
 }
 printf("%s\n",out);
 return 0;
}