#include <iostream>
#include <stdio.h>
#include <stdlib.h>
int IsValidMobile(char* number) {
int flag = 0;
if (strlen(number) != 13)
flag = 1;
else {
for (int i = 0; i < 13; i++) {
if (number[i]<'0' && number[i]>'9')
flag = 2;
break;
}
if (flag != 2 && (number[0] != 8 || number[1] != 6 || number[2] != 1))
flag = 3;
else
flag = 0;
}
return flag;
}