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problem 1.cpp

 #include<bits/stdc++.h>

#include<fstream>

#include<iostream>

using namespace std;

int main()

{


    ifstream in;

    in.open("input.txt");

    if(!in.is_open())

    {

        cout<<"Error file\n";

        return 0;

    }

    int lineNum=1;

    string s;

    while (getline(in,s))

    {

        cout<<lineNum<<". "<<lineNum<<" "<<s<<endl;

        lineNum++;

    }






    in.close();




    return 0;

}


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