Compilare: main.cpp: In function 'void euler(int)': main.cpp:40:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | while(poz[x] < G[x].size()) { | ~~~~~~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:67:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | for(int i = 0; i < imp.size(); i += 2) { | ~~^~~~~~~~~~~~