문제
풀이
#include <iostream>
using namespace std;
void solve(void) {
int n; cin >> n;
cout << 2000 << "\n";
for (int i=0; i<1000; i++) cout << 1 << " ";
for (int i=0; i<1000; i++) cout << 1000 << " ";
}
int main(void) {
ios::sync_with_stdio(false);
cin.tie(nullptr);
solve();
return 0;
}