#include <stdio.h>
int main(void) {
int n;
for (int i = 0; i < n; i++) {
long long a, b, temp;
scanf("%lld%lld", &a
, &b
); while (a != 0 && b != 0) {
temp = b;
b = a;
a = temp % a;
}
if (a == 0)
else
}
return 0;
}
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