#include <iostream>
using namespace std;
int licznika, licznikb;
int tabdz[150];
int dzielnik(int x);
int nwd(int x[],int xl, int y[], int yl);
int main()
{
int wynik,ile,a,b;
cin >> ile;
for(int i=1; i<=ile; i++)
{
cin >> a >> b;
if((a==0)&&(b==0)) {}
else if (a==0) cout << b << endl;
else if (b==0) cout << a << endl;
else if((a==1)||(b==1)) cout << 1 << endl;
else if(b%a==0) cout << a << endl;
else if(a%b==0) cout << b << endl;
else
{
licznika = dzielnik(a);
int taba[licznika];
for(int i=0;i<=licznika;i++) taba[i]=tabdz[i];
licznikb = dzielnik(b);
int tabb[licznikb];
for(int i=0;i<=licznikb;i++) tabb[i]=tabdz[i];
cout << nwd(taba,licznika, tabb,licznikb)<<endl;
//for (int i=0;i<=licznika;i++) cout << "TEST TABA " << taba[i] << endl;
//for (int i=0;i<=licznikb;i++) cout << "TEST TABB " << tabb[i] << endl;
//cout << "TEST LICZNIK A " << licznika << endl;
//cout << "TEST LICZNIK B " << licznikb << endl;
}
}
return 0;
}
int dzielnik(int x)
{
int licz=0;
int *w;
w=tabdz;
*w=1;
w++;
int i=1,d=2,d2=2,kon=0;
while(x!=1)
{
if(x%2==0) // Parzyste
{
d=2;
if(x%d==0)
{
x=x/d;
*w=d;
w++;
i++;
licz++;
}
else
{
}
// Parzyste
}
else
{
d=3;
kon=0;
while(kon!=1)
{
if(x%d==0)
{
x=x/d;
*w=d;
w++;
i++;
licz++;
//cout << "TEST LICZ " << licz << endl;
kon=1;
}
else
{
d=d+2;
}
}
}
} // Koniec While
return licz;
} // Koniec funkcji
int nwd(int x[],int xl, int y[], int yl)
{
int k=0,wynik=1,j=0,h=0;
int tabc[150];
for (int i=0;i<=xl;i++)
{
for(j=h;j<=yl;j++)
{
if(x[i]==y[j])
{
tabc[k]=x[i];
k++;
j++;
h++;
//cout << "TEST j " << j << endl;
break;
}else
{
//cout << "TEST I " << i << endl;
}
}
}
for(int i=0;i<k;i++)
wynik*=tabc[i];
for(int i=0;i<k;i++)
//cout << "TEST TABC " << tabc[i] << " " << endl;
return wynik;
}
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