Compilare: main.cpp: In member function 'int bit_ds::lcb(const bit_ds&)': main.cpp:17:42: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(bb = (bits[i]&rhs.bits[i])) ^ main.cpp: In function 'int main()': main.cpp:45:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("casute.in" ,"r" ,stdin); ^ main.cpp:46:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("casute.out" ,"w" ,stdout); ^ main.cpp:48:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ main.cpp:50:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&h[i]); ^ main.cpp:63:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^