//I wrote with dev c++.
//How it's works
//Example your level is 50 and you want to be 75 level. You need craft 145 times your cards.
//50-- 5times --51 51-- 5times --52 .... 60-- 6times --61.... 74-- 7times --75
//is it useful or useless
//I just want it and I did

#include <cstdlib>
#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{
int a,b;
cout<<"Hakan Gozubuyuk @Altair93_GTR 2013"<<endl<<endl;
q:
cout<<"Your Level :";
cin>>a;
cout<<"Target Level :";
cin>>b;
if(a<b && a>=0 && b>0 && a!=b)
{
if(b<=20)
{if(a==0){cout<<" You need to "<<b<<" times craft"<<endl;}
else {cout<<" You need to "<<b-a<<" times craft"<<endl;}
}
if(b>20)
{if(a>=20)
{int f=1;
int i;
for(i=(b-b%10)/10-1;i>0;i--)
{
f=f+i;
}
int g=1;
int j;
for (j=(a-a%10)/10-1;j>0;j--)
{
g=g+j;
}
cout<<"You need to "<<((f-2)*10+(b-b%10)/10*(b%10)+20)-((g-2)*10+(a-a%10)/10*(a%10)+20)<<" times craft"<<endl;
}
else {
int h=1;
int k;
for (k=(b-b%10)/10-1;k>0;k--)
{
h=h+k;
}
cout<<"You need to "<<(h-2)*10+20-a+(b-b%10)/10*(b%10)<<" times craft"<<endl;}
}
} else {cout<<"Wrong counting."<<endl<<endl; goto q;}
system("PAUSE");
return EXIT_SUCCESS;
}