#include<iostream>
using namespace std;
int main()
{int a[4][5],i,j,max,m,n;
bool flag;
 for(i=0;i<4;i++)
     for(j=0;j<5;j++)
         cin>>a[i][j];
      for(i=0;i<4;i++)
      {    m=0;
          max=a[i][m];
          for(j=0;j<5;j++)
              if(max<a[i][j])
              { m=j;
              n=i;
                  max=a[n][m];
                  for(i=0;i<4;i++)
                  if(a[i][m]<a[n][m])
                  {    break;
                  flag=0;}
                   else
                       flag=1;
               
                  
              }
      }
      if (flag=1)
         
          cout<<"a["<<n<<"]["<<m<<"]"<<"="<<a[n][m];
          else
          cout<<"it dose not exit";
          cout<<endl;         
return 0;请高手指出这个程序的错误，无鞍点时运行不了