你发发代码？
by Escapism @ 2022-01-24 20:59:15
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```cpp
#include<bits/stdc++.h>
using namespace std;
int main()
{
int ma=0,jin=0;
for(int i=1;i<=12;i++)
{
int cost;
cin>>cost;
jin=jin+300;
jin=jin-cost;
if(jin<0)
{
cout<<"-"<<i;
return 0;
}
ma=ma+jin/100*100;
jin=jin%100;
}
cout<<jin+ma*1.2;
}
```
by lmyedison @ 2022-01-24 21:00:39