var f: text;

    n, i, r, m, a, b: integer;

    nums: array of array of integer;

begin

    setlength(nums, 0);

    assign(f, '26.txt');

    reset(f);

    readln(f, n);

    loop n do begin

        readln(f, a, b);

        nums := nums + ||a, -b||;

    end;

    Sort(nums, (x, y) -> ((x[0] < y[0]) or (x[0] = y[0]) and (x[1] < y[1])));

    r := 0; m := 0;

    for i := 1 to nums.Length – 1 do

        if nums[i, 0] = nums[i-1, 0] then

            if nums[i, 1] – nums[i-1, 1] = 3 then begin

                r := nums[i, 0];

                m := -nums[i, 1] + 1;

            end;

    print(r, m);

end.

f = open('26.txt’)

n = int(f.readline())

nums = []

for _ in range(n):

    pair = list(map(int, f.readline().split()))

    pair[1] = -pair[1]

    nums += [pair]

nums.sort()

r, m = 0, 0

for i in range(1, len(nums)):

    if nums[i][0] == nums[i-1][0]:

        if nums[i][1] – nums[i-1][1] == 3:

            r = nums[i][0]

            m = -nums[i][1] + 1

print(r, m)

#include <iostream>

#include <algorithm>

#include <fstream>

#include <vector>

using namespace std;

int main(){

    ifstream f("26.txt");

    int n, a, b, r, m;

    f >> n;

    vector <vector <int>> nums;

    for(int i=1; i<=n; i++){

        f >> a >> b;

        vector<int> temp = {a, -b};

        nums.push_back(temp);

    }

    sort(nums.begin(), nums.end());

    r = 0; m = 0;

    for(int i=1; i < nums.size(); i++)

        if(nums[i][0] == nums[i-1][0])

            if(nums[i][1] - nums[i-1][1] == 3){

                r = nums[i][0];

                m = -nums[i][1] + 1;

            }

    cout << r << " " << m;

}