#include<iostream> #include<cmath> using namespace std; int gcd(int a,int b) { int c=0; if(a>b) c=b; else c=a; for(int i=c;i>=1;i--) { if(a%c==0&&b%c==0) return c; } } int main(){ int m,n; cin>>m>>n; cout<<gcd(m,n); return 0; }