#include<bits/stdc++.h>
#define rep(i, a, b) for(int i = a; i <= b; ++i)
using namespace std;
typedef long long ll;
void io() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
}
ll n;
int main() {
io(); cin >> n;
rep(i, 1, n) cout << 2 * i / 3 << ' ' << 2 * i % 3 << endl;
}
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