Compilare: main.cpp: In function 'void suffix_array()': main.cpp:57:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(int i=0;i<s.size();i++) | ~^~~~~~~~~ main.cpp:68:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for(int i=0;i<s.size();i++) | ~^~~~~~~~~ main.cpp:78:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<date>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | for(int i=0;i<v.size();i++) | ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:95:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 95 | for(int i=0;i<sa.size();i++) | ~^~~~~~~~~~ main.cpp:101:9: warning: unused variable 'r' [-Wunused-variable] 101 | int r=0; | ^