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

typedef struct _SLine
{
 double start;
 double end;
}Line;


void swap(double *x,double *y)
{
 double p=0;
 p=*x;*x=*y;*y=p;
}


int read(const char *sf,Line **mas,int *leng)
{
  int i;
  FILE *f;
  double p;
  f=fopen(sf,"r");
     if(fscanf(f,"%d",leng)!=1) return -1;
  else
  {
   (*leng)=(*leng)/2;
   (*mas)=(Line*)malloc((*leng)*sizeof(Line));
   for(i=0;i<(*leng);i++)
   {
    fscanf(f,"%lf",&p);
    (*mas+i)->start=p;
    fscanf(f,"%lf",&p);
    (*mas+i)->end=p;
    if((*mas+i)->start>(*mas+i)->end) swap(&((*mas+i)->end),&((*mas+i)->start));
   }
  }
  fclose(f);
  return 0;
}


Line joined_lines(Line *mas,int leng)
{
 int i=0;
 double min_start=mas[1].start,max_end=mas[1].end;
 Line l;
 for(i=2;i<leng;i++)
 {
  if(mas[i].start<=min_start) min_start=mas[i].start;
  if(mas[i].end>=max_end) max_end=mas[i].end;
 }
 l.start=min_start;
 l.end=max_end;
 return l;
}



int if_belong(Line l1,Line l2)
{
 if(((l1.start>=l2.start)&&(l1.end<=l2.end))) return 1;else return 0;
}




int main(int __argc,char *__argv[])
{
 if(__argc>1)
 {
  int leng;
  Line *mas;
  FILE *f;
     if(read(__argv[1],&mas,&leng)==0)
  {
   f=fopen(__argv[2],"w");
   fprintf(f,"%d",if_belong(mas[0],joined_lines(mas,leng)));
   fclose(f);
  }
 }
}