Compilare: main.cpp: In lambda function: main.cpp:54:21: warning: variable 'b' set but not used [-Wunused-but-set-variable] 54 | int a , b; | ^ main.cpp: In function 'void solve()': main.cpp:126:22: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 126 | while(fii[i] < bcx[i].size()){