#include<iostream>
#include<cstdio>
#include<algorithm>
using namespace std;

int main(){
int a,b;

while(scanf(" %d %d",&a,&b){
int cnt=1;
for(int i=1;i<8;i++){
if(a+b-i*10<0)break;
cnt++;
}

cout << ont << endl;

return 0;
}