Compilare: main.cpp: In function 'int main()': main.cpp:33:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(j=0;j<s[i].size();j++) | ~^~~~~~~~~~~~ main.cpp:43:30: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare] 43 | if(s[v[j]].size()<mn) | ~~~~~~~~~~~~~~^~~