过辣！（脑残人士的欢呼）

    long long n,b,a;
    cin>>n;
    a=n/100;
    b=n%100;
    cout<<a+b<<endl<<fixed<<setprecision(1)<<1.0*a/b;

终于过啦！！！

#include <bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    cin >> n;
    int y = n % 100;
    int x = n / 100;
    cout << x + y << endl;
    cout << fixed << setprecision(1) << (x * 1.0) / (y * 1.0) << endl;
    return 0;
}

#include<bits/stdc++.h>
using namespace std;

int main()
{
	int n;
	double x,y,a,b,c,d;
	cin>>n;
	a=n%10;
	b=n/10%10;
	c=n/100%10;
	d=n/1000;
	x=(d*10+c)+(b*10+a);
	y=(d*10+c)/(b*10+a);
	cout<<x<<fixed<<setprecision(1)<<endl<<y*1.0;
  
    return 0;
}

cout<<"88\n0.3\n";

#include <cstdio>
using namespace std;
int main(){
    int n,x,y;
    scanf("%d",&n);
    x=n/100,y=n%100;
    printf("%d\n%.1f\n",x+y,1.0*x/y);
    return 0;
}