```c
#include<stdio.h>
#include<string.h>
#include<math.h>
int a[20];
int main()
{
int total = 0, money = 0;
int t;
for (int i = 1; i <= 12; i++)
{
scanf("%d", &a[i]);
}
for (int i = 1; i <= 12; i++)
{
money += 300 - a[i];
if (money < 0)
{
printf("-%d", i);
return 0;
}
t = money /100;
total += t;
money -= 100 * t;
}
printf("%d", (int)(money + total * 120));
return 0;
}
```
兄弟，乘浮点数会向下取整，数比较大可能导致答案错误。
by CodingJellyfish @ 2022-03-11 08:02:58
@[DoctorJellyfish](/user/52381) 谢谢大佬
by qinlei @ 2022-03-11 10:42:31