/in/foo.cc: In function 'int main()':
/in/foo.cc:31:36: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'll* {aka long long int*}' [-Wformat=]
        scanf("%d%d",&A[i].a,&A[i].b);
                                    ^
/in/foo.cc:31:36: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'll* {aka long long int*}' [-Wformat=]