Compilare: main.cpp: In function 'int main()': main.cpp:53:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for (int i = 0; i < euler.size() - 1; i++) { | ~~^~~~~~~~~~~~~~~~~~ main.cpp:65:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | for (int i = 1; (1 << i) <= euler.size(); i++) | ~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp:66:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | for (int j = 0; j + (1 << i) - 1 < euler.size(); j++) | ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~ main.cpp:70:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 70 | for (int j = 0; j < poz[i].size() - 1; j++) { | ~~^~~~~~~~~~~~~~~~~~~