题解 | #蛇形矩阵#

#include <iostream>
using namespace std;

int main() {
    int n;
    cin >> n;
    int start = 1,interval = 1,num;
    int a,b;
    for(int i = 0;i < n;i++){
        start += i;++interval;num = n-i;
        a = start;b = interval;
        for(int j = 0;j < num;j++){
            cout << a << " ";
            a += b;
            ++b;
        }
        cout << endl;
    }
}
// 64 位输出请用 printf("%lld")