@[ZJdog](/user/1282382) 少了 `ceil` 函数的头文件
by xiangzhenze611 @ 2024-02-21 10:56:45
```c
if(t == 0){
i= 0;
}
if(ceil(s/t)>=m){
i = 0;
}
```
第二个if前加一个else
by Qiu101029 @ 2024-02-21 11:08:06
$t$ 可能为 $0$
by _Justin_ @ 2024-02-21 11:09:30
感谢大佬们！！
by ZJdog @ 2024-02-21 11:10:27
```c
#include<stdio.h>
int main(){
int m,t,s;
int i;
scanf("%d%d%d",&m,&t,&s);
if(t == 0){
i= 0;
}else{
i = m-ceil(s/t);
if(ceil(s/t)>=m){
i = 0;
}
}
printf("%d",i);
return 0;
}
```
实在不行就这样，把特判提前
by Qiu101029 @ 2024-02-21 11:15:06
等一下，还有问题，我在找找
by Qiu101029 @ 2024-02-21 11:16:50
```c
#include<stdio.h>
int main(){
int m,t,s;
int i;
scanf("%d%d%d",&m,&t,&s);
if(t == 0){
i= 0;
}else{
i = m-ceil(s*1.0/t);
if(ceil(s*1.0/t)>=m){
i = 0;
}
}
printf("%d",i);
return 0;
}
```
s和t都是整型，要*1.0转化为浮点型。
[AC](https://www.luogu.com.cn/record/147783423)
by Qiu101029 @ 2024-02-21 11:28:29
@[ZJdog](https://www.luogu.com.cn/user/1282382)
by Qiu101029 @ 2024-02-21 11:29:47