foo.cc: In function 'int main()':
foo.cc:64:11: warning: 'ans' may be used uninitialized [-Wmaybe-uninitialized]
   64 |     cout<<ans<<endl;
      |           ^~~
foo.cc:17:13: note: 'ans' was declared here
   17 |     int i,j,ans,now,next;
      |             ^~~
foo.cc:29:14: warning: 'next' may be used uninitialized [-Wmaybe-uninitialized]
   29 |     while(now!=n)
      |           ~~~^~~
foo.cc:17:21: note: 'next' was declared here
   17 |     int i,j,ans,now,next;
      |                     ^~~~

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