bank.cpp: In function 'int main()':
bank.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%lld %lld", &n, &m);
~~~~~^~~~~~~~~~~~~~~~~~~~~
bank.cpp:15:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%lld", &s);
~~~~~^~~~~~~~~~~~
bank.cpp:17:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%lld", &a[i]);
~~~~~^~~~~~~~~~~~~~~