Pagini recente » Cod sursa (job #466758) | Cod sursa (job #2188120) | Cod sursa (job #346447) | Cod sursa (job #91639) | Cod sursa (job #3316490)
#include <bits/stdc++.h>
using namespace std;
// !!!
string PREFIX = "euclid2";
int get_gcd(int x, int y) {
if (x == 0) return y;
if (y == 0) return x;
int common = 1;
while ( (!(x&1)) && (!(y&1))) {
common <<= 1;
x >>= 1;
y >>= 1;
}
while (!(x&1)) {
x >>= 1;
}
while (!(y&1)) {
y >>= 1;
}
// acum ambele numere sunt impare.
if (x < y) swap(x, y);
return common * get_gcd(x - y, y);
}
int main()
{
ifstream cin(PREFIX + ".in");
ofstream cout(PREFIX + ".out");
int t;
cin >> t;
while(t--) {
int x, y;
cin >> x >> y;
cout << get_gcd(x, y) << '\n';
}
}