这题让我们计算出 BMI 值，随后判断属于哪个等级。

BMI 值计算公式：

                ​​​​​​​        ​​​​​​​        ​​​​​​​        ​​​​​​​        ​​​​​​​。

AC CODE：

#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
int main(){
	double weight;
	double height;
	cin>>weight;
	cin>>height;
	double cnt = height*height;
	double BMI = weight/cnt;
	string res;
	if(BMI<18.5){
		res = "Underweight";
	}else if(BMI>=18.5&&BMI<=25.0){
		res = "Normal weight";
	}else if(BMI>25.0){
		res = "Overweight";
	}
	cout<<res<<endl;
	return 0;
}