Compilare: main.cpp: In function 'void suffix_array()': main.cpp:38:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for(int i=0;i<s.size();i++) | ~^~~~~~~~~ main.cpp:49:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for(int i=0;i<s.size();i++) | ~^~~~~~~~~ main.cpp:58:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<date>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for(int i=0;i<v.size();i++) | ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:75:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | for(int i=0;i<sa.size();i++) | ~^~~~~~~~~~ main.cpp:81:9: warning: unused variable 'r' [-Wunused-variable] 81 | int r=0; | ^