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#include <iostream>
#include <cmath>
 
using namespace std;
int a,b,ile;
unsigned long c;
 
int main()
{
    cin>>ile;
    for(int i=0; i<ile; i++)
    {
        cin>>a;
        cin>>b;
        c=pow(a,b);
        if(c<10)
        {
            cout<<c<<endl;
        }
        else
        {
            cout<<c%10<<endl;
        }
 
 
 
 
 
 
 
 
 
 
    }
    return 0;
}

Main.java:1: error: illegal character: '#'
#include <iostream>
^
Main.java:1: error: class, interface, or enum expected
#include <iostream>
         ^
Main.java:2: error: illegal character: '#'
#include <cmath>
^
Main.java:5: error: class, interface, or enum expected
int a,b,ile;
^
Main.java:6: error: class, interface, or enum expected
unsigned long c;
^
Main.java:8: error: class, interface, or enum expected
int main()
^
Main.java:11: error: class, interface, or enum expected
    for(int i=0; i<ile; i++)
    ^
Main.java:11: error: class, interface, or enum expected
    for(int i=0; i<ile; i++)
                 ^
Main.java:11: error: class, interface, or enum expected
    for(int i=0; i<ile; i++)
                        ^
Main.java:14: error: class, interface, or enum expected
        cin>>b;
        ^
Main.java:15: error: class, interface, or enum expected
        c=pow(a,b);
        ^
Main.java:16: error: class, interface, or enum expected
        if(c<10)
        ^
Main.java:19: error: class, interface, or enum expected
        }
        ^
Main.java:23: error: class, interface, or enum expected
        }
        ^
Main.java:36: error: class, interface, or enum expected
}
^
15 errors

Standard output is empty