#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int a; int b; int c; int d; cin>>a; cin>>b; cin>>c; cin>>d; cout<<(c*10+d)/(a*10+b); return 0; }