Compilare: main.cpp: In function 'bool exists(long long unsigned int)': main.cpp:11:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long unsigned int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 11 | for (int i = 0; i < divs2.size(); ++i) { | ~~^~~~~~~~~~~~~~ main.cpp: In function 'void getDivsOfSquare(long long unsigned int)': main.cpp:40:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long unsigned int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | for (int i = 0; i < divs.size(); ++i) { | ~~^~~~~~~~~~~~~ main.cpp:41:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long unsigned int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for (int j = i; j < divs.size(); ++j) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:58:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long unsigned int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for (int i = 0; i < divs2.size(); ++i) { | ~~^~~~~~~~~~~~~~ main.cpp:68:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long unsigned int, long long unsigned int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for (int i = 0; i < sol.size(); ++i) { | ~~^~~~~~~~~~~~