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Re:求助我和网上找来的代码大同小异,提交之后他的每次都AC,我把数据和语句风格改的都跟他差不多了但还是WA……rpIn Reply To:求助我和网上找来的代码大同小异,提交之后他的每次都AC,我把数据和语句风格改的都跟他差不多了但还是WA……rp Posted by:tankadozmy at 2010-02-04 15:42:46 > #include <iostream> //这是他的
> #include <ctime>
> using namespace std;
> long n,i,j,m,s,k,a[505][505],b[505][505],c[505][505],sum;
> int main()
> {
>
> srand((unsigned)time(0));//初始化随机函数
>
> while(cin>>n)
> {
> k=0;
> for(i=0;i<n;i++)
> for(j=0;j<n;j++)
> scanf("%d",&a[i][j]);
> for(i=0;i<n;i++)
> for(j=0;j<n;j++)
> scanf("%d",&b[i][j]);
>
> for(i=0;i<n;i++)
> for(j=0;j<n;j++)
> scanf("%d",&c[i][j]);
>
> for(s=0;s<60000;s++) //随机次数越多越准确
> {
>
> j=rand()%n; //随机抽取行列
> i=rand()%n;
>
> sum=0;
> for(m=0;m<n;m++)
> sum+=a[i][m]*b[m][j];
> if(c[i][j]!=sum) { k=1;break;}
>
> }
>
>
>
>
> if(k==1) cout<<"NO"<<endl;
> else
> cout<<"YES"<<endl;
>
>
> }
>
>
> return 0;
> }
> #include<iostream> //这是我的
> #include<ctime>
> using namespace std;
> int main()
> {
> int n;
> srand((unsigned int)time(0));
>
> long int a[505][505],b[505][505],d[505][505];
> int i,j;
> while(cin>>n)
> {
> int t=60000,flag=0;
> for(i=0;i<n;i++)
> for(j=0;j<n;j++)
> scanf("%d",&a[i][j]);
> for(i=0;i<n;i++)
> for(j=0;j<n;j++)
> scanf("%d",&b[i][j]);
> for(i=0;i<n;i++)
> for(j=0;j<n;j++)
> scanf("%d",&d[i][j]);
>
> int r,c;
> while (t)
> {
> r=rand()%n;
> c=rand()%n;
> long int temp=0;
> for(i=0;i<n;i++)
> {
> temp+=a[r][i]*b[i][c];
> }
> if(temp!=d[r][c]) {flag=1; break;}
> t--;
> }
> if(flag)
> {
> cout<<"NO"<<endl;
> }
> else
> cout<<"YES"<<endl;
> }
> return 0;
> }
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