```
#include<bits/stdc++.h>
using namespace std;
int main(){
int n;
int a[4], b[4];
cin>>n;
for(int i=1;i<=3;i++){
cin>>a[i]>>b[i];
}
int z[4]={0}, m[4]={0};
for(int i=1;i<=3;i++){
z[i]=n/a[i];
if(n%a[i]!=0){
z[i]++;
}
m[i]=z[i]*b[i];
}
sort(m+1,m+1+3);
cout<<m[1];
return 0;
}
```
by wmbwww @ 2023-08-22 18:52:27
@[wmbwww](/user/1037359) 不是别人求助你发自己的代码干什么啊
by hexuchen @ 2023-08-22 18:53:38
因为他的代码我看不懂
by wmbwww @ 2023-08-22 18:56:10
@[Achenfeng](/user/402229) 写错符号了，是%，不是/
```cpp
#include<iostream>
using namespace std;
struct pencil
{
int num;
int price;
int sum;
};
int main()
{
int a,b;
cin >> a;
pencil arr1[3];
for (int i = 0; i < 3; i++)
{
cin >> arr1[i].num >> arr1[i].price;
}
for (int i = 0; i < 3; i++)
{
if (a % arr1[i].num == 0) //是%
{
arr1[i].sum = arr1[i].price * (a / arr1[i].num);
}
else
{
arr1[i].sum = arr1[i].price * (a / arr1[i].num + 1);
}
}
for (int i = 0; i < 2; i++)
{
for (int j = 0; j < 2 - i; j++)
{
if (arr1[j].sum > arr1[j + 1].sum)
{
int temp = arr1[j].sum;
arr1[j].sum = arr1[j + 1].sum;
arr1[j + 1].sum = temp;
}
}
}
cout << arr1[0].sum << endl;
system("pause");
return 0;
}
```
by hexuchen @ 2023-08-22 18:56:23
@[Achenfeng](/user/402229) 如果一个数%另外一个数等于0，说明这个数可以被另外一个数整除
by hexuchen @ 2023-08-22 18:57:12
@[Achenfeng](/user/402229) 求关注~
by hexuchen @ 2023-08-22 18:57:28
@[hexuchen](/user/945742)
嘶 没注意 谢谢
by Achenfeng @ 2023-08-23 18:21:28