Borderou de evaluare (job #664736)

Compilare: main.cpp: In function 'int main()': main.cpp:20:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 20 | for(int k=1; k<=a.size(); k++) | ~^~~~~~~~~~ main.cpp:22:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 22 | for(int i=0; i<a.size()-k+1; i++) | ~^~~~~~~~~~~~~