d=input().split() t=(int(d[0])*10)+int(d[1]) print(t//19)

#include<bits/stdc++.h> using namespace std; int main() { int a,b; cin>>a>>b; cout<<(b+10*a)/19; return 0; }

1

#include <iostream> using namespace std; int main() { int a,b; cin>>a>>b; double k = (a*10+b)/19; cout<<k; return 0; }

#include <bits/stdc++.h> using namespace std; int main(){ int a,b; cin>>a>>b; double k=(a*10+b)/19; int w=floor(k); cout<<w; return 0; }

#include <iostream> using namespace std; int main(){ int a,b; cin>>a; cin>>b; cout<<(a10+b)/(110+9); return 0; }

#include <bits/stdc++.h> using namespace std; int main(){ int a,b; cin>>a>>b; double c=a+b*0.1; cout <<int(c/1.9); return 0; }