Borderou de evaluare (job #602526)

Compilare: main.cpp: In function 'void back(int, int)': main.cpp:18:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'unsigned int'} [-Wsign-compare] 18 | for (int i = start; i < factors.size(); i++) { | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:40:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'unsigned int'} [-Wsign-compare] 40 | for (num = 1, coef = 1; num <= factors.size(); num++, coef *= -1) { | ~~~~^~~~~~~~~~~~~~~~~