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- #include <bits/stdc++.h>
- using namespace std;
- #define int long long
- main()
- {
- //ifstream cin("input.txt");
- //ofstream cout("output.txt");
- int a,b,c,n;
- cin>>n>>a>>b>>c;
- int m = n;
- int ans1 = m/a;
- m -= ans1*a;
- while(m >= b)
- {
- ans1 += m/b;
- m = m-m/b*b + m/b*c;
- }
- int ans2 = 0;
- while(n >= b)
- {
- ans2 += n/b;
- n = n - n/b*b + n/b*c;
- }
- ans2 += n/a;
- cout<<max(ans1,ans2);
- }
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