foo.cc: In function 'int main()':
foo.cc:27:17: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
 scanf("%I64d",&n);
               ~~^
foo.cc:29:22: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
 scanf("%I64d",&num[i]);
               ~~~~~~~^
foo.cc:30:25: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
 scanf("%I64d%I64d",&a,&b);
                    ~~   ^
foo.cc:30:25: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=]
foo.cc:32:19: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
 printf("%I64d",ans);
                   ^
foo.cc:27:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 scanf("%I64d",&n);
 ~~~~~^~~~~~~~~~~~
foo.cc:29:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 scanf("%I64d",&num[i]);
 ~~~~~^~~~~~~~~~~~~~~~~
foo.cc:30:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 scanf("%I64d%I64d",&a,&b);
 ~~~~~^~~~~~~~~~~~~~~~~~~~

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