Compilare: main.cpp: In member function 'void Fenwick::build(std::vector<long long int>&)': main.cpp:100:37: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 100 | if((i|(i+1))<fw.size()) fw[i|(i+1)] += fw[i]; | ~~~~~~~~~^~~~~~~~~~ main.cpp: In member function 'void Fenwick::update(long long int, long long int)': main.cpp:105:25: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 105 | for(;pos<fw.size();pos|=pos+1) fw[pos] += val; | ~~~^~~~~~~~~~ main.cpp: In member function 'long long int Fenwick::findk(long long int)': main.cpp:73:18: warning: statement has no effect [-Wunused-value] 73 | #define bug(...) 777771449 | ^~~~~~~~~ main.cpp:122:25: note: in expansion of macro 'bug' 122 | if(bag) bug(sum, k); | ^~~ main.cpp:125:32: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 125 | while(jump - 1 < fw.size()) | ~~~~~~~~~^~~~~~~~~~~ main.cpp:73:18: warning: statement has no effect [-Wunused-value] 73 | #define bug(...) 777771449 | ^~~~~~~~~ main.cpp:131:25: note: in expansion of macro 'bug' 131 | if(bag) bug(jump); | ^~~ main.cpp:135:37: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 135 | if(k + jump < fw.size() && fw[k + jump] <= sum) | ~~~~~~~~~^~~~~~~~~~~