View Compilation Error

0_0_39502593_7882.cpp: In function 'int starway(int, int)':
0_0_39502593_7882.cpp:14:25: error: return-statement with no value, in function returning 'int' [-fpermissive]
   14 |         if(a[l]>=b[r])  return;
      |                         ^~~~~~