原题链接：https://www.acwing.com/problem/content/3992/
找规律题
#includeusing namespace std; int main (){ int n; cin >> n; int res = 1; for (int i = 0; i < n; i ++ ) { res += 12 * i; } cout << res; }
原题链接：https://www.acwing.com/problem/content/3992/
找规律题
#includeusing namespace std; int main (){ int n; cin >> n; int res = 1; for (int i = 0; i < n; i ++ ) { res += 12 * i; } cout << res; }
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