问题标题: codingtang 1747

if(a<=10)s=3;
     else if(a<=24)s=(a-10)/2+3;
     else
     s=(a-24)/3+10;
        cout<<s;

定义 a,n;
    cin>>a;
    if(a<=10)
    {
        cout<<"3";
    }
    else if(a>10&&a<=24)
    {
        n=(a-10)/2+3;
        cout<<n;
    }
    else if(a>24)
    {
        n=(a-24)/3+10;
        cout<<n;
    }

 int n;
    cin>>n;
    if(n<10) cout<<0;
        else if(n==10) cout<<3;
        else if(n<=24) cout<<3+((n-10)/2+(n-10)%2);
        else cout<<10+((n-24+3-1)/3);

int a,b=0;
    cin>>a;
    if(a==10)
    {
        b=3;
    }
    else if(a<=24)
        {
            b=b+3+(a-10)*1.0/2;
        }
    else b=b+3+7+(a-24)*1.0/3;
    cout<<b;

核心代码