foo.cc: In function 'int main()':
foo.cc:6:34: warning: unused variable 'i' [-Wunused-variable]
    6 |  long long a[100000],b[100000],n,i=1,c=0,n1,a1=1;
      |                                  ^
foo.cc:6:38: warning: unused variable 'c' [-Wunused-variable]
    6 |  long long a[100000],b[100000],n,i=1,c=0,n1,a1=1;
      |                                      ^
foo.cc:6:45: warning: unused variable 'a1' [-Wunused-variable]
    6 |  long long a[100000],b[100000],n,i=1,c=0,n1,a1=1;
      |                                             ^~

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