foo.c: In function 'main':
foo.c:15:25: error: expected '}' before 'else'
   15 |                         else{printf("No");}}
      |                         ^~~~
foo.c: At top level:
foo.c:16:9: error: expected identifier or '(' before 'return'
   16 |         return 0;
      |         ^~~~~~
foo.c:17:1: error: expected identifier or '(' before '}' token
   17 | }
      | ^

[Hydro](https://hydro.ac)提供评测服务