#include <bits/stdc++.h>
using namespace std;
int main() {
string s , d;
cin>>s>>d;
transform(s.begin(),s.end() , s.begin(),::toupper);
transform(d.begin(),d.end() , d.begin(),::toupper);
string arrs[8] = {"TH" , "GA", "IC" , "HA" , "TE", "LU" ,"NI","CA"};
float arr[8]={800,600,750,900,1400,1200,1100,1500};
float res=0;
int st ,ed;
for(int i=0;i<8;i++)
{
if(s==arrs[i])
st=i;
if(d==arrs[i])
ed=i;
}
if(st==ed)
{
cout<<" INVALID INPUT";
return 0;
}
else
{
int i=st+1;
cout<<i;
while(i!=ed+1)
{
res+=(arr[i]);
i=(i+1)%8;
}
cout<<(ceil)(res*0.005);
return 0;
}
}
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