This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#define intl int
#define int long long
#define double long double
const bool MULTI_TEST = false;
const intl mod = 1e9 + 7, maxn = 400002, maxm = 2e5 + 1;
using namespace std;
int n;
vector<pair<int, int>> edg;
vector<int> back_l;
int mylt_min_2(int pref) {
vector<int> new_ = {n + 1, n + 2, n + 3};
for (auto x : back_l)
for (auto y : new_)
edg.push_back({x, y});
back_l = new_;
n = n + 3;
return -2 * pref;
}
int fun1(int pref) {
edg.push_back({1, n + 1});
back_l.push_back(n + 1);
n = n + 1;
return pref - 1;
}
int fun2(int pref) {
vector<int> novi = {n + 1, n + 2};
for (auto x : back_l)
for (auto y : novi)
edg.push_back({x, y});
edg.push_back({1, n + 3});
novi.push_back(n + 3);
back_l = novi;
n = n + 3;
return -pref - 1;
}
void fun3() {
vector<int> novi = {n + 1, n + 2};
for (auto x : back_l)
for (auto y : novi)
edg.push_back({x, y});
back_l = novi;
for (auto x : back_l)
edg.push_back({x, n + 3});
n = n + 3;
}
void fun4() {
for (auto x : back_l)
edg.push_back({x, n + 1});
n = n + 1;
}
void print() {
cout << n << ' ' << edg.size() << "\n";
for (auto p : edg)
cout << p.first << ' ' << p.second << "\n";
}
void solve() {
int k;
cin >> k;
int k_ = abs(k);
if (k == 0) {
n = 3;
edg = {{1, 2}, {2, 3}};
print();
return;
}
vector<int> binary;
while (k_ > 0) {
if (k_ & 1) binary.push_back(1);
else binary.push_back(0);
k_ /= 2;
}
reverse(binary.begin(), binary.end());
int pref = 1;
for (int i = 1; i < (int) binary.size(); i++) {
pref = mylt_min_2(pref);
if (binary[i]) {
if (pref < 0)
pref = fun1(pref);
else
pref = fun2(pref);
}
}
//assert(abs(k) == abs(pref));
if (pref == k) fun3();
else fun4();
print();
}
signed main() {
//#ifdef _DEBUG
//freopen("qual.in", "r", stdin);freopen("qual.out", "w", stdout);
//#endif
//
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int t = 1;
if (MULTI_TEST) {
std::cin >> t;
}
for (int i = 0; i < t; i++) {
solve();
}
return 0;
}
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