foo.c: In function 'main':
foo.c:5:15: warning: too many arguments for format [-Wformat-extra-args]
    5 |         scanf("%d",&n,&k);
      |               ^~~~
foo.c:4:37: warning: unused variable 'b' [-Wunused-variable]
    4 |         int k,n,m,s=1,a[100010]={0},b[100010]={0};
      |                                     ^

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