#include <iostream>
#include <string>
using namespace std;
int main ()
{
// string a[3] = {"135","435","7835"};
// string b[3] = {"914","944","9784"};
// string c[3] = {"1901","1904","19078"};
// string d[3] = {"1","4","78"};
string s;
int n;
cin>>n;cin.get();
while(n--)
{
getline(cin,s);
int flag = 1;
for(int i = 0; i < 3; i++)
{
if(s=="78"||s=="4"||s == "1")
{
cout<<"+"<<endl;
flag = 0;
break;
}
else if(s[s.size()-2]=='3'&&s[s.size()-1]=='5')
{
cout<<"-"<<endl;
flag = 0;
break;
}
else if(s[0]=='9'&&s[s.size()-1]=='4')
{
cout<<"*"<<endl;
flag = 0;
break;
}
else if(s[0]=='1'&&s[1]=='9'&&s[2]=='0')
{
cout<<"?"<<endl;
flag = 0;
break;
}
}
if(flag)cout<<"+"<<endl;
}
return 0;
}
水题，判字符串
唯一需要注意的是+-*？的先来后到，
