#include<iostream> #include<cstring> #include<cmath> using namespace std; bool mark[301]={}; int main() { int n,m; cin>>n>>m; int k=n-1; int i=0; int temp =0; while(k){ if(!mark[i]){ temp++; if(temp%m==0){ mark[i] = !mark[i]; k--; } } i++; i%=n; } while(mark[i++]); cout<<i<<endl; return 0; }