sim BAC 2018 SIII Ex. 4

#include <iostream>
#include <cmath>
#include <fstream>
using namespace std;

int main()
{
    int x,y,a,okx=0,oky=0;
    ifstream fin("bac.txt");
    fin>>x>>y;
    if(x>y)
    {
        a=y;
        y=x;
        x=a;
    }
    while(fin>>a)
    {
        if((x<a)&&(okx==0))
        {
            cout<<x;
            okx=1;
        }
        if((y<a)&&(oky==0))
        {
            cout<<y;
            oky=1;
        }
        cout<<a;
    }
    if(okx==0)
        cout<<x;
    if(oky==0)
        cout<<y;

    return 0;


}