#include <iostream>
using namespace std;

int main(){
    int M;
    cin >> M;
    int l = 1, r = 1;
    long long sum = 0;
    while (l <= M/2){
        if (sum < M){
            sum += r;
            r++;
        }else if (sum > M){
            sum -= l;
            l++;
        }else{
            cout << l << " " << r-1 << endl;
            sum -= l;
            l++;
        }
    }
    return 0;
}