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#include <iostream> #include <string> #include <cmath> using namespace std; int main() { int a, b, n; n = 2; cin >> a; if (a == 4 || a == 1) cout << "Yes"; else{ while (true) { n += 1; b = n * 2 + (n - 2) * 2; if (a == b) { cout << "Yes"; break; } else if (b > a) { cout << "No"; break; } } } }
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