Compilare: main.cpp: In function 'int main()': main.cpp:45:64: warning: variable 'last' set but not used [-Wunused-but-set-variable] int n , m , i , j , x , maxim , nr , u , v , bm , new_bm , last , cnt , minim , tc; ^~~~ main.cpp:43:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("paznici.in" , "r" , stdin); ^ main.cpp:44:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("paznici.out" , "w" , stdout); ^ main.cpp:46:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d" , &n , &m); ^ main.cpp:50:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%1d" , &x); ^