bank.cpp: In function 'int main()':
bank.cpp:6:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
6 | scanf("%d %d" , &n , &m);
| ~~~~~^~~~~~~~~~~~~~~~~~~
bank.cpp:8:28: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
8 | for (auto & x : a)scanf("%d" , &x);
| ~~~~~^~~~~~~~~~~
bank.cpp:9:28: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
9 | for (auto & x : b)scanf("%d" , &x);
| ~~~~~^~~~~~~~~~~