copypaste3.cpp: In function 'int main()':
copypaste3.cpp:11:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
11 | scanf(" %d",&t);
| ~~~~~^~~~~~~~~~
copypaste3.cpp:15:22: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
15 | scanf(" %d",&N);
| ~~~~~^~~~~~~~~~
copypaste3.cpp:16:22: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
16 | scanf(" %d",&M);
| ~~~~~^~~~~~~~~~