View Compilation Error

0_0_17158690_11585.cpp: In function 'int main()':
0_0_17158690_11585.cpp:44:25: error: 'N' was not declared in this scope
         scanf("%d%d%d",&N,&K,&L);
                         ^
0_0_17158690_11585.cpp:44:28: error: 'K' was not declared in this scope
         scanf("%d%d%d",&N,&K,&L);
                            ^
0_0_17158690_11585.cpp:44:31: error: 'L' was not declared in this scope
         scanf("%d%d%d",&N,&K,&L);
                               ^
0_0_17158690_11585.cpp:64:13: error: 'data' was not declared in this scope
             data[cnt++]=ans;
             ^
0_0_17158690_11585.cpp:67:14: error: 'data' was not declared in this scope
         sort(data,data+cnt);
              ^
0_0_17158690_11585.cpp:67:27: error: 'sort' was not declared in this scope
         sort(data,data+cnt);
                           ^