C++ 代码 (需要熟练的背诵,打挑战模式)
#include <cstdio>
#include <iostream>
using namespace std;
int gcd(int a, int b)
{
return b ? gcd(b, a % b) : a;
}
int main()
{
int n;
cin >> n;
while (n -- )
{
int a, b;
scanf("%d%d", &a, &b);
int ans = gcd(a, b);
printf("%d\n", gcd(a, b));
}
return 0;
}