View Compilation Error

0_0_28618881_16122.cpp: In function 'int main()':
0_0_28618881_16122.cpp:32:45: error: 'l' was not declared in this scope
       if(ans[i][j]==-1||ans[i][k]+ans[k][j]<l[i][j])
                                             ^
0_0_28618881_16122.cpp: At global scope:
0_0_28618881_16122.cpp:38:2: error: expected unqualified-id before 'return'
  return 0;
  ^
0_0_28618881_16122.cpp:39:2: error: expected declaration before '}' token
  } 
  ^