/in/foo.cc: In function 'int main()':
/in/foo.cc:15:18: error: 'k' was not declared in this scope
   15 |             for( k=j+1;k<n;k++)
      |                  ^
/in/foo.cc:24:18: error: 'k' was not declared in this scope
   24 |             if(a[k]==left)break;
      |                  ^
/in/foo.cc:6:11: warning: unused variable 'K' [-Wunused-variable]
    6 |     int n,K,left,count=0,a[100];
      |           ^