1016D.Vasya And The Matrix#矩陣存在

題目出處:http://codeforces.com/contest/1016/problem/Dios

#include<iostream>
#define ll long long int
#define inf 0x3f3f3f3f
#define N 1005
using namespace std;
ll a[N],b[N];
ll xn[N][N];
ll n,m;
int main(){    /**/

    cin>>n>>m;
    ll x = 0;
    for(int i=0;i<n;i++){
        cin>>a[i];
        x=x^a[i];
    }
    ll y = 0;
    for(int i=0;i<m;i++){
        cin>>b[i];
        y=y^b[i];
    }
    
    if(x==y){
        cout<<"YES"<<endl;
    }else{
        cout<<"NO"<<endl;
        return 0;
    }
    x = x^a[0];
    x = x^b[0];
    xn[0][0] = x;
    for(int i=1;i<m;i++)
       xn[0][i] = b[i];
    for(int i = 1;i<n;i++){
        xn[i][0] = a[i];
    }
    for(int i=0;i<n;i++){
        for(int j = 0;j<m;j++){
            cout<<xn[i][j]<<" ";
        }
        cout<<endl;
    }
    return 0;
} 

要使得矩陣存在,那麼行和列的異或必定等於零.,或者說行的異或和等於列的異或和.,以後就直接特性的填充。ide

相關文章
相關標籤/搜索