Borderou de evaluare (job #645176)

Compilare: main.cpp: In function 'int main()': main.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 23 | for (i = 0; i < a.size() - 1; i++) | ~~^~~~~~~~~~~~~~ main.cpp:30:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 30 | for (i = 0; i < a.size() - 1; i++) | ~~^~~~~~~~~~~~~~ main.cpp:33:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 33 | for (j = 0; j < r.size(); j++) | ~~^~~~~~~~~~