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TwoSets.cpp
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54 lines (45 loc) · 1011 Bytes
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//Two Sets - https://cses.fi/problemset/task/1092/
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int MOD = 1e9 + 7;
const ll INF = 1e18;
void solve() {
int n;
cin >> n;
ll s = 1LL * n * (n + 1) / 2;
if (s & 1) {
cout << "NO" << '\n';
return;
}
cout << "YES" << '\n';
ll target = s / 2;
vector<int> a, b;
for (int i = n; i >= 1; i--) {
if (target - i >= 0) {
a.push_back(i);
target -= i;
} else {
b.push_back(i);
}
}
int asz = (int) a.size(), bsz = (int) b.size();
cout << asz << '\n';
for (int i = 0; i < asz; i++) {
cout << a[i] << " \n"[i == asz - 1];
}
cout << bsz << '\n';
for (int i = 0; i < bsz; i++) {
cout << b[i] << " \b"[i == bsz - 1];
}
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int T = 1;
// cin >> T;
while (T--) {
solve();
}
return 0;
}