题解

#include<iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    if(n==7){
        cout<<"neutral";
    }if(n<7){
        cout<<"Acidic";
    }if(n>7){
        cout<<"alkalinity";
    }
    return 0;
}

#include<iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    if(n==7){
        cout<<"neutral";
    }else if(n<7){
        cout<<"Acidic";
    }else if(n>7){
        cout<<"alkalinity";
    }
    return 0;
}