a, b = map(str, input().split())
if a==b:
print(a)
else:
print("1")
#include<bits/stdc++.h>
using namespace std;
int main()
{
string s1,s2;
cin>>s1>>s2;
if(s1==s2)cout<<s1<<endl;
else cout<<1<<endl;
}
1475E - Advertising Agency | 1345B - Card Constructions |
1077B - Disturbed People | 653A - Bear and Three Balls |
794A - Bank Robbery | 157A - Game Outcome |
3B - Lorry | 1392A - Omkar and Password |
489A - SwapSort | 932A - Palindromic Supersequence |
433A - Kitahara Haruki's Gift | 672A - Summer Camp |
1277A - Happy Birthday Polycarp | 577A - Multiplication Table |
817C - Really Big Numbers | 1355A - Sequence with Digits |
977B - Two-gram | 993A - Two Squares |
1659D - Reverse Sort Sum | 1659A - Red Versus Blue |
1659B - Bit Flipping | 1480B - The Great Hero |
1519B - The Cake Is a Lie | 1659C - Line Empire |
515A - Drazil and Date | 1084B - Kvass and the Fair Nut |
1101A - Minimum Integer | 985D - Sand Fortress |
1279A - New Year Garland | 1279B - Verse For Santa |