Compilare: main.cpp: In function 'int main()': main.cpp:110:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<linie>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 110 | for(int i=0;i<sol.size();i++) | ~^~~~~~~~~~~ main.cpp:115:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<linie>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 115 | for(int j=i+1;j<sol.size();j++) | ~^~~~~~~~~~~ main.cpp:124:26: warning: unused variable 'egal' [-Wunused-variable] 124 | bool egal=1; | ^~~~ main.cpp:125:26: warning: unused variable 'found' [-Wunused-variable] 125 | bool found=0; | ^~~~~