题解 | #尼科彻斯定理#
尼科彻斯定理
http://www.nowcoder.com/practice/dbace3a5b3c4480e86ee3277f3fe1e85
#include <bits/stdc++.h> using namespace std; int main() { int n; int first; while (cin >> n) { first = n*n - n + 1; cout << first; for (int i = 1; i < n; ++i) { cout << "+" << first + i * 2; } cout << endl; } return 0; }