View Compilation Error

0_0_33077320_10972.cpp: In function 'int ls(int)':
0_0_33077320_10972.cpp:64:4: error: return-statement with no value, in function returning 'int' [-fpermissive]
    return  ;
    ^
0_0_33077320_10972.cpp: In function 'void query(int, int, int, int, int)':
0_0_33077320_10972.cpp:85:9: error: 'm' was not declared in this scope
      if(m
         ^
0_0_33077320_10972.cpp:85:9: error: expected ')' at end of input
0_0_33077320_10972.cpp:85:9: error: expected statement at end of input
0_0_33077320_10972.cpp:85:9: error: expected '}' at end of input
0_0_33077320_10972.cpp:85:9: error: expected '}' at end of input