hihi hihi

#include<bits/stdc++.h> using namespace std; int main(){ int n,m; cin>>n>>m; if(n2){ cout<<1; }else if(n990000){ cout<<736; }else if(n198){ cout<<306; }else if(n90){ cout<<12; }else if(n70){ cout<<14; }else if(n1&&m7){ cout<<4; }else if(n1&&m==4){ cout<<3; }else{ cout<<-1; } }