/in/foo.c: In function 'find':
/in/foo.c:14:12: warning: 'min' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if(a[j]>0&&min>a[j]){
      ~~~~~~^~~~~~~~~~
/in/foo.c:19:9: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]
  return s;
         ^
/in/foo.c: In function 'main':
/in/foo.c:14:12: warning: 'min' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if(a[j]>0&&min>a[j]){
      ~~~~~~^~~~~~~~~~
/in/foo.c:5:6: note: 'min' was declared here
  int min;
      ^~~
/in/foo.c:14:12: warning: 'min' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if(a[j]>0&&min>a[j]){
      ~~~~~~^~~~~~~~~~
/in/foo.c:5:6: note: 'min' was declared here
  int min;
      ^~~
/in/foo.c:46:2: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%d %d",m,n);
  ^~~~~~~~~~~~~~~~~~~
/in/foo.c:46:2: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]