Compilare: main.cpp: In function 'int main()': main.cpp:124:18: warning: variable 'ok' set but not used [-Wunused-but-set-variable] 124 | bool ok=0; | ^~ main.cpp:146:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<linie>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 146 | for(int i=0;i<sol.size();i++) | ~^~~~~~~~~~~ main.cpp:151:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<linie>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 151 | for(int j=i+1;j<sol.size();j++) | ~^~~~~~~~~~~