foo.cc: In function 'int main()':
foo.cc:6:37: warning: unused variable 'i' [-Wunused-variable]
    6 |     long long a[100000],b[100000],n,i=1,c=0,n1,a1=1;
      |                                     ^
foo.cc:6:41: warning: unused variable 'c' [-Wunused-variable]
    6 |     long long a[100000],b[100000],n,i=1,c=0,n1,a1=1;
      |                                         ^
foo.cc:6:48: 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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