Borderou de evaluare (job #716730)

Compilare: main.cpp: In function 'int main()': main.cpp:18:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 18 | for(int j=0;j<a.size()-1;j++) | ~^~~~~~~~~~~ main.cpp:20:30: 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=0;k<a.size();k++) | ~^~~~~~~~~ main.cpp:70:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 70 | for(int j=0;j<a.size()-1;j++) | ~^~~~~~~~~~~ main.cpp:72:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 72 | for(int k=0;k<a.size();k++) | ~^~~~~~~~~