Compilare: main.cpp: In function 'int main()': main.cpp:44:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for(int i=0;i<sol.size();i++) | ~^~~~~~~~~~~ main.cpp:44:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 44 | for(int i=0;i<sol.size();i++) | ^~~ main.cpp:46:5: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 46 | return 0; | ^~~~~~