bank.cpp: In function 'int main()':
bank.cpp:18:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   18 |  scanf("%i%i",&n,&m);
      |  ~~~~~^~~~~~~~~~~~~~
bank.cpp:19:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   19 |  for(int i=1;i<=n;i++)scanf("%i",&a[i]);
      |                       ~~~~~^~~~~~~~~~~~
bank.cpp:20:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   20 |  for(int i=1;i<=m;i++)scanf("%i",&b[i]);
      |                       ~~~~~^~~~~~~~~~~~