Compilare: main.cpp: In function 'bool check(int)': main.cpp:9:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 9 | for (int i = 0; i < v.size(); i++) { | ~~^~~~~~~~~~ main.cpp: In function 'void bs()': main.cpp:31:13: warning: 'sol' may be used uninitialized [-Wmaybe-uninitialized] 31 | fout << sol; | ^~~ main.cpp:20:22: note: 'sol' was declared here 20 | int left, right, sol; | ^~~