Compilare: main.cpp: In function 'void build_lps(long long int)': main.cpp:22:21: 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] 22 | for(int i = 0; i<s[ind].size(); i++) | ~^~~~~~~~~~~~~~ main.cpp:30:13: 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] 30 | while(i < s[ind].size()) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'long long int contains_secv(long long int, long long int)': main.cpp:63:13: 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] 63 | while(i < s[x].size()) | ~~^~~~~~~~~~~~~ main.cpp:70:18: 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] 70 | if(j == s[y].size()) | ~~^~~~~~~~~~~~~~ main.cpp: In function 'long long int same_pref_suf(long long int, long long int)': main.cpp:97:13: 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] 97 | while(i < s[x].size()) | ~~^~~~~~~~~~~~~ main.cpp:104:18: 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] 104 | if(j == s[y].size()) | ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:237:29: 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] 237 | for(int i = 0; i<s[cur].size(); i++) | ~^~~~~~~~~~~~~~