题解 | #蛇形矩阵#

#include<iostream>
using namespace std;

int main()
{
    int num;
    while(cin>>num)
    {
        double tmp[num];
        for(int i=1; i<=num; i++)
        {
            tmp[i-1] = ((double)i+1)/2*(double)i;
            cout<<tmp[i-1]<<" ";
        }
        cout<<endl;
        for(int j=0; j<num-1;j++)
        {
            for(int k=0; k<num-j-1;k++)
            {
                cout<<tmp[k+j+1]-j-1<<" ";
            }
            cout<<endl;
        }

    }
    return 0;
}