prob. 4 sIII var 2015 iunie-iulie

#include <iostream>
#include <fstream>
using namespace std;
ifstream f("date.in");
ofstream g("date.out");

int n,x,y;
bool v[100];



int main()
{

    int i,ok=0;
    while(f>>x)

        v[x]=true;
    i=0;
    while(i<99)
    if(v[i]==1&&v[i+1]==0)
    {
        x=i;
        i++;

        while(v[i]==0&&i<99)
            i++;
        if(v[i]==1)
           {
            cout<<x<<" "<<i<<'\n';
            ok=1;}

    }
    else
        i++;

    if(ok==0)
        cout<<"nu exista";

}