`C++`

#include <iostream>
#include <vector>
using namespace std;

vector<pair<int, int>> findConsecutiveSequences(int N) {
    vector<pair<int, int>> sequences;
    int length = 2;
    while (length <= N / 2 + 1) {
        int start = (2 * N - length * (length - 1)) / (2 * length);
        int sum = (start * 2 + length - 1) * length / 2;
        if (N == sum) {
            sequences.push_back(make_pair(start, start + length - 1));
        }
        length++;
    }
    return sequences;
}

int main() {
    int N;
    cout << "Enter N: ";
    cin >> N;

    vector<pair<int, int>> sequences = findConsecutiveSequences(N);

    if (sequences.empty()) {
        cout << -1 << endl;
    } else {
        for (auto sequence : sequences) {
            cout << sequence.first << " " << sequence.second << endl;
        }
    }

    return 0;
}