/in/foo.c: In function 'main':
/in/foo.c:4:20: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<=' token
    4 |         int n, k, k<=n<10000;
      |                    ^~
/in/foo.c: At top level:
/in/foo.c:24:1: error: expected identifier or '(' before 'for'
   24 | for(int i=0;i<n;i++)
      | ^~~
/in/foo.c:24:14: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
   24 | for(int i=0;i<n;i++)
      |              ^
/in/foo.c:24:18: error: expected '=', ',', ';', 'asm' or '__attribute__' before '++' token
   24 | for(int i=0;i<n;i++)
      |                  ^~