Compilare: main.cpp: In function 'int main()': main.cpp:55:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | for(int j = 0; j < s[i].size(); j++) { | ~~^~~~~~~~~~~~~ main.cpp:61:50: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for(int l = 0; l < s[j].size(); l++) { | ~~^~~~~~~~~~~~~ main.cpp:107:45: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 107 | while(j1 >= 0 && j2 < s1[j].size()) { | ~~~^~~~~~~~~~~~~~ main.cpp:187:13: warning: unused variable 'cnt' [-Wunused-variable] 187 | int cnt = 0; | ^~~