地对地导弹2

A ring is compose of n circles as shown in diagram. Put natural number 1, 2, ..., n into each circle separately, and the sum of numbers in two adjacen Read More

# include <cstdio> # include <cmath> # include <algorithm> using namespace std; int n, s[10]; int main(){ int i, j, k, a, b, c, ans; scanf("%d", &n); Read More