C++ 解法, 执行用时: 1ms, 内存消耗: 368KB, 提交时间: 2017-08-30

#include<bits/stdc++.h>
using namespace std;

int main(){
    long long x, f, d, p;
    cin >> x >> f >> d >> p;
    if(d / x >= f){
        long long a = d + f*p;
        long long res = a / (x + p);
        cout << res;
    } else{
        cout << d / x;
    }
    return 0;
}

C++ 解法, 执行用时: 1ms, 内存消耗: 368KB, 提交时间: 2017-08-19

#include<iostream>
#include<cmath>
#include<algorithm>

using namespace std;

int main(){
    int mon,fru,ren,p;
    while(cin>>ren>>fru>>mon>>p){
        if(fru*ren<=mon){
            int rest=mon-fru*ren;
            int restDay=rest/(ren+p);
            cout<<fru+restDay<<endl;
        }else{
            cout<<(mon/ren)<<endl;
        }
        
    }
    return 0;
}