Compilare: main.cpp: In function 'int main()': main.cpp:44:25: warning: comparison of integer expressions of different signedness: 'std::deque<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 44 | while(a.size()+2<=n) | ~~~~~~~~~~^~~ main.cpp:77:25: warning: comparison of integer expressions of different signedness: 'std::deque<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 77 | while(a.size()+2<=n-1) | ~~~~~~~~~~^~~~~