/in/foo.cc: In function 'int main()':
/in/foo.cc:74:39: error: expected primary-expression before '/' token
   74 |         cin>>m>>n>>pw;                /
      |                                       ^
/in/foo.cc:75:9: error: expected primary-expression before 'for'
   75 |         for (int i=1;i<=m;i++)
      |         ^~~
/in/foo.cc:75:22: error: 'i' was not declared in this scope
   75 |         for (int i=1;i<=m;i++)
      |                      ^