看了半天不知道为啥过不了AC，有大神指点一下吗

#include <iostream>
#include <cstdio>
#include <cstring>
#include <cmath>
#include <iomanip>
using namespace std;
int main(){
	int m, n;
	cin>>m>>n;
	int bmi;
	bmi = m/n*n;
	if(bmi<18.5){
		cout<<"Underweight";
	} else if(bmi>=18.5&&bmi<24){
		cout<<"Normal";
	}else{
		cout<<bmi<<endl;
		cout<<"Overweight";
	} 
    return 0;
}