#include<stdio.h>
#include<string.h>

int v[100]={0,1,5,2,8,3,9,2,8,7,7,8,4,7,3,8,4,1,5,4,4,5,9,6,2,7,3,6,2,1,1,2,
	    8,1,7,2,8,5,9,8,8,9,3,0,6,1,7,0,6,5,5,6,2,5,1,6,2,9,3,2,2,3,7,4,
	    0,5,1,4,0,9,9,0,6,9,5,0,6,3,7,6,6,7,1,8,4,9,5,8,4,3,3,4,0,3,9,4,
	    0,7,1,0,}, n;
char s[101];

void calcul()
{
  FILE *in=fopen("cifra.in","r");
  fgets(s,101,in);
  n=0;
  n=(s[strlen(s-2)]-'0')*10+(s[strlen(s-1)])-'0';