foo.c: In function 'Unique':
foo.c:36:5: warning: statement with no effect [-Wunused-value]
     for(j;j<n;j++)
     ^~~
foo.c: In function 'f':
foo.c:56:5: warning: statement with no effect [-Wunused-value]
     for(j;j<n;j++)
     ^~~
foo.c: In function 'main':
foo.c:9:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n1,&n2);
  ^~~~~~~~~~~~~~~~~~~~~
foo.c:11:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a1[i]);
   ^~~~~~~~~~~~~~~~~~
foo.c:13:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a2[i]);
   ^~~~~~~~~~~~~~~~~~
foo.c:14:4: warning: array subscript is above array bounds [-Warray-bounds]
  a1[10000]=Unique(n1,a1);
  ~~^~~~~~~
foo.c:15:4: warning: array subscript is above array bounds [-Warray-bounds]
  a2[10000]=Unique(n2,a2);
  ~~^~~~~~~

[Hydro](https://hydro.ac)提供评测服务