#include <iostream>
#include<bits/stdc++.h>
#include<stack>
#include<string.h>
using namespace std;
int main()
{
long long T,i,counting;
cin>>T;
while(T--)
{
stack<char> s;
string arrow;
cin>>arrow;
counting=0;
if(arrow[0] != '<')
{
cout<<0<<"\n";
}
else
{
for(i=0;i<arrow.size();i++)
{
if(arrow[i]=='<')
{
s.push(arrow[i]);
}
else if(arrow[i]=='>')
{
if(!s.empty())
{
if(s.top()=='<')
{
s.pop();
counting+=2;
}
}
}
}
if(s.empty())
{
cout<<counting<<"\n";
}
else
{
cout<<0<<"\n";
}
}
}
}
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