Compilare: main.cpp: In function 'int main()': main.cpp:31:42: warning: comparison of integer expressions of different signedness: 'long long int' and 'long long unsigned int' [-Wsign-compare] 31 | for (int j = s.size() - 1; j >= s.size() - i; --j) | ~~^~~~~~~~~~~~~~~ main.cpp:47:34: warning: comparison of integer expressions of different signedness: 'long long int' and 'long long unsigned int' [-Wsign-compare] 47 | for (int i = s.size() - 1; i >= s.size() - lb; --i) | ~~^~~~~~~~~~~~~~~~ main.cpp:49:39: warning: comparison of integer expressions of different signedness: 'long long int' and 'long long unsigned int' [-Wsign-compare] 49 | for (int i = s.size() - lb - 1; i >= s.size() - lb - la; --i) | ~~^~~~~~~~~~~~~~~~~~~~~