Compilare: main.cpp: In function 'void computeReqDigits()': main.cpp:31:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for (int numOfDigits = 1; numOfDigits < digitsOfK.size(); numOfDigits++) { | ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp:41:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for (int pref = 0; pref < digitsOfK.size(); pref++) { | ~~~~~^~~~~~~~~~~~~~~~~~