#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(){ long long a,b,c,d,s,m; cin>>a>>b>>c>>d; s=a*10+b; m=c*10+d; cout<<m/s; }