Last night I`d finished,compiled,tested the 1053-Problem and after
sending I received four "Compilation Error"s, while at my computer
the program functioned normally.
 I use work with pointers and "<malloc.h>"-standart file,may be it`s
my problem.
I hope for truth...

Program`s cod by C++ Language.
#include <stdio.h>
#include <malloc.h>

typedef struct list{
    list*next;
    int inf;
} lst;
list *bl,*el;
int c=1;
void put(int i){
  list *p;
  p=(list*)malloc(sizeof(list));
  (*p).inf=i;
  if(c==1){ bl=p; el=p;}
  else{(*el).next=p; el=(*el).next; (*p).next=0;}
};
bool OOz(list *b,list *e){
  if(b==e){(printf("%d",(*b).inf));return true;}
  bool ans=false;
  bool c=false;
  list *p; p=b;
  while(p!=e){
    if((*p).inf!=0 && c==false){
      c=true;
      ans=true;
    }
    else
    if((*p).inf!=0 && c==true){
      ans=false;
      break;
    }
  p=(*p).next;
  }
  if((*p).inf!=0 && c==true)ans=false;
  return ans;
};

void main(){
  int q=0;
  scanf("%d",&q);
  for(int i=0,val;i<q;i++){
    scanf("%i",&val);
    put(val);
    c++;
  }
  list *min1,*min2,*p;
  while(OOz(bl,el)==false){
    p=bl;
    while((*p).inf==0)p=(*p).next;
      min1=p;
      while(p!=el){
         p=(*p).next;
         if((*min1).inf>(*p).inf &&(*p).inf!=0)min1=p;
      }
    p=bl;
    while((*p).inf==0 || p==min1)p=(*p).next;
    min2=p;
    while(p!=el){
      p=(*p).next;
if(((*min2).inf>(*p).inf)&& p!=min1 &&(*p).inf!=0)min2=p;
    }
    while((*min1).inf<(*min2).inf)(*min2).inf-=(*min1).inf;
    if((*min1).inf==(*min2).inf)(*min2).inf=0;
    p=bl;
  };
    while((*p).inf==0)p=(*p).next;
    printf("%d",(*p).inf);
};

All the qaetions send to bico@i.kiev.ua..
THANKS A LOT (Beforehand)..

I'll ask Pavel Atnashev about it, but I'm quite sure that really,
that is the problem. Try to rewrite the program in C++ style, using
the "new" operator instead of "malloc".

>  Last night I`d finished,compiled,tested the 1053-Problem and after
> sending I received four "Compilation Error"s, while at my computer
> the program functioned normally.
>  I use work with pointers and "<malloc.h>"-standart file,may be
it`s
> my problem.
> I hope for truth...
>
> Program`s cod by C++ Language.
> #include <stdio.h>
> #include <malloc.h>
>
> typedef struct list{
>     list*next;
>     int inf;
> } lst;
> list *bl,*el;
> int c=1;
> void put(int i){
>   list *p;
>   p=(list*)malloc(sizeof(list));
>   (*p).inf=i;
>   if(c==1){ bl=p; el=p;}
>   else{(*el).next=p; el=(*el).next; (*p).next=0;}
> };
> bool OOz(list *b,list *e){
>   if(b==e){(printf("%d",(*b).inf));return true;}
>   bool ans=false;
>   bool c=false;
>   list *p; p=b;
>   while(p!=e){
>     if((*p).inf!=0 && c==false){
>       c=true;
>       ans=true;
>     }
>     else
>     if((*p).inf!=0 && c==true){
>       ans=false;
>       break;
>     }
>   p=(*p).next;
>   }
>   if((*p).inf!=0 && c==true)ans=false;
>   return ans;
> };
>
> void main(){
>   int q=0;
>   scanf("%d",&q);
>   for(int i=0,val;i<q;i++){
>     scanf("%i",&val);
>     put(val);
>     c++;
>   }
>   list *min1,*min2,*p;
>   while(OOz(bl,el)==false){
>     p=bl;
>     while((*p).inf==0)p=(*p).next;
>       min1=p;
>       while(p!=el){
>          p=(*p).next;
>          if((*min1).inf>(*p).inf &&(*p).inf!=0)min1=p;
>       }
>     p=bl;
>     while((*p).inf==0 || p==min1)p=(*p).next;
>     min2=p;
>     while(p!=el){
>       p=(*p).next;
> if(((*min2).inf>(*p).inf)&& p!=min1 &&(*p).inf!=0)min2=p;
>     }
>     while((*min1).inf<(*min2).inf)(*min2).inf-=(*min1).inf;
>     if((*min1).inf==(*min2).inf)(*min2).inf=0;
>     p=bl;
>   };
>     while((*p).inf==0)p=(*p).next;
>     printf("%d",(*p).inf);
> };
>
> All the qaetions send to bico@i.kiev.ua..
> THANKS A LOT (Beforehand)..