Untitled
user_5668965
c_cpp
15 days ago
953 B
1
Indexable
Never
#include <bits/stdc++.h> using i64 = long long; int main() { std::ios::sync_with_stdio(false); std::cin.tie(nullptr); int n; std::cin >> n; std::vector<int> a(n); for (int i = 0; i < n; i++) { std::cin >> a[i]; } std::vector<bool> check(n+1); for (int i = 3; i <= n; i++) { if (check[i]) { continue; } if (n % i) { continue; } for (int j = i; j <= n; j += i) { check[j] = true; } for (int k = 0; k < n/i; k++) { bool ok = true; for (int x = k; x < n; x += n/i) { if (!a[x]) { ok = false; } } if (ok) { std::cout << "YES\n"; return 0; } } } std::cout << "NO\n"; return 0; }
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