foo.c: In function 'main':
foo.c:12:7: warning: implicit declaration of function 'max'; did you mean 'main'? [-Wimplicit-function-declaration]
   ans=max(ans,cur);
       ^~~
       main
foo.c:5:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&c);
  ^~~~~~~~~~~~~~~~~~~
foo.c:6:22: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=0;i<n;++i)scanf("%d",&w[i]);
                      ^~~~~~~~~~~~~~~~~
/tmp/ccTmaiow.o: In function `main':
foo.c:(.text.startup+0xf5): undefined reference to `max'
collect2: error: ld returned 1 exit status

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