Borderou de evaluare (job #747992)

Compilare: main.cpp: In function 'int main()': main.cpp:18:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 18 | for (i=0; i<s.size(); i++){ | ~^~~~~~~~~ main.cpp:21:25: warning: comparison of integer expressions of different signedness: 'std::stack<char>::size_type' {aka 'unsigned int'} and 'int' [-Wsign-compare] 21 | if (S.size()>x) | ~~~~~~~~^~ main.cpp:24:16: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 24 | if (s[i]==')') | ^