#pragma GCC optimize("Ofast")
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cstdio>
#include <numeric>
#include <cstring>
#include <ctime>
#include <cstdlib>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <list>
#include <cmath>
#include <bitset>
#include <cassert>
#include <queue>
#include <stack>
#include <deque>
#include <cassert>
#include <iomanip>
#include <random>

using namespace std;



#define ll long long
#define ld double
#define endl '\n'
#define int long long

template<typename T> void uin(T &a, T b) {
	if (b < a) a = b;
}

template<typename T> void uax(T &a, T b) {
	if (b > a) a = b;
}



mt19937 rnd(rand());

int n;

map<int, pair<int, int>> cnt;

vector<pair<pair<int, int>, pair<int, int>>> vec;
int sz, a, d = 1, e, f, g, a2, b2, c2;
double dou, dou2;
double b, c;
deque<long long>mas[301][301], mas2[301][301];
string s;
signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cin >> a >> b >> c;
	dou = ceil(a / (c + 1)+0.0000001);
	dou = (double)(a - dou)*(b + 1);
	dou2 = ceil(a / (b + 1) + 0.0000001);
	dou2 = (double)(a - dou2)*(c + 1);
	if (dou > dou2) {
		swap(dou, dou2);
		e = 1;
	}
	if (dou2 <= a) {
		cout << -1;
		return 0;
	}
	cout << dou2 << endl;
	if (dou2 - 0.000001 < dou) {
		dou = ceil(a / (c + 1) + 0.0000001);
		dou2 = ceil(a / (b + 1) + 0.0000001);
		if (dou != dou2) {
			cout << 2 << endl;
			if (dou < dou2) {
				dou2 = a - dou2;
				cout << dou << " " << a - dou << endl;
				cout << dou2 << " " << a - dou2 << endl;
			}
			else {
				dou2 = a - dou2;
				cout << dou << " " << a - dou << endl;
				cout << dou2 << " " << a - dou2<<endl;
			}
		}
		else {
			cout << 1 << endl;
			if (e == 0) {
				cout << dou << " " << a - dou << endl;
			}
			else {
				cout << dou2 << " " << a - dou2 << endl;
			}
		}
	}
	else {
		dou = ceil(a / (c + 1) + 0.0000001);
		dou2 = ceil(a / (b + 1) + 0.0000001);
		cout << 1 << endl;
		if (e == 0) {
			cout << dou2 << " " << a - dou2 << endl;
		}
		else {
			cout << a - dou << " " << dou << endl;
		}
	}
	cin >> b;
	return 0;
}