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

C++ :

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