Borderou de evaluare (job #716728)

Compilare: main.cpp: In function 'int main()': main.cpp:17:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 17 | for(int j=0;j<a.size()-1;j++) | ~^~~~~~~~~~~ main.cpp:19:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 19 | for(int k=0;k<a.size();k++) | ~^~~~~~~~~