运行 ID: 26140

Main.cc: In function ‘int main()’:
Main.cc:5:2: error: expected initializer before ‘cin’
  cin>m>>n;
  ^~~
Main.cc:6:11: error: ‘n’ was not declared in this scope
  int a[m][n];
           ^
Main.cc:9:9: error: ‘a’ was not declared in this scope
    cin>>a[i][j];
         ^
Main.cc:14:10: error: ‘a’ was not declared in this scope
    cout<