Compilare: main.cpp: In function 'bool f(int)': main.cpp:78:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | for(i=x;i<s[t].size();i++) | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:131:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 131 | if(minn>s[i].size()) | ~~~~^~~~~~~~~~~~