#include<stdio.h>
FILE*A,*B;
int j=0,n,v[810],k=0,aux,i=0,sol=0,min,nrmin,temp;
int main()
{
	A=fopen("ntri.in","r");
	B=fopen("ntri.out","w");
	fscanf(A,"%d",&n);
	for(i=0;i<n;i++)fscanf(A,"%d",&v[i]);
	  for(i=0;i<n;i++)     {         min=999999;         nrmin=0;         for(j=i;j<n;j++)         {             if(v[j]<min)             {                 min=v[j];                 nrmin=j;             }         }         temp=v[i];         v[i]=v[nrmin];         v[nrmin]=temp;     } 
	fprintf(B,"%d",sol);fclose(A);fclose(B);
}