1710 magic of david copperfield.cpp

总共80多道题的POJ详细解题报告

#include<iostream>
#include<iomanip>
#include<string>
#include<algorithm>
#include<math.h>
using namespace std;
int main()
{
    int n,i,j,k;
    cin>>n;
    k=301; // ki取从301开始的连续奇数 
    for(i=n-1;i>=1;i--)  //移除第i+1行和第i+1列 
    {
        //移除偶格 
        cout<<k;k+=2;
        for(j=(i&1);j<i;j+=2)
            cout<<" "<<j*n+i+1;
        for(j=(i&1);j<=i;j+=2)
            cout<<" "<<i*n+j+1;
        cout<<endl;
        //移除奇格 
        cout<<k;k+=2;
        for(j=((i+1)&1);j<i;j+=2)
            cout<<" "<<j*n+i+1;
        for(j=((i+1)&1);j<=i;j+=2)
            cout<<" "<<i*n+j+1;
        cout<<endl;
    }
    return 0;
}