Compilare: main.cpp: In function 'int main()': main.cpp:25:25: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] 25 | if (i&(1<<j)==1) s+=v[j+1]; | ~~~~~~^~~ main.cpp:42:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for (int i=0, j=b1.size()-1;i<a1.size();i++){ | ~^~~~~~~~~~ main.cpp:41:15: warning: variable 'temp' set but not used [-Wunused-but-set-variable] 41 | long long temp=0; | ^~~~