Compilare: main.cpp: In function 'void suffixArray(std::__cxx11::string&, int*)': main.cpp:23:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<s.size(); i++){ ~^~~~~~~~~ main.cpp:26:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i+1 < s.size()) ~~~~^~~~~~~~~~ main.cpp:34:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=2; j<s.size(); j*=2){ ~^~~~~~~~~ main.cpp:38:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1; i<s.size(); i++){ ~^~~~~~~~~ main.cpp:48:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<s.size(); i++){ ~^~~~~~~~~ main.cpp:50:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (next_index < s.size()) ~~~~~~~~~~~^~~~~~~~~~ main.cpp:75:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<s.size(); i++) ~^~~~~~~~~ main.cpp: In function 'int compare(std::__cxx11::string, std::__cxx11::string)': main.cpp:80:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0, j=0; i<a.size() and j<b.size(); i++, j++) ~^~~~~~~~~ main.cpp:80:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0, j=0; i<a.size() and j<b.size(); i++, j++) ~^~~~~~~~~ main.cpp: In function 'int lower_bound(int*, std::__cxx11::string, std::__cxx11::string, int, int)': main.cpp:96:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=suffix[mid]; i<str.size(); i++) ~^~~~~~~~~~~ main.cpp: In function 'int upper_bound(int*, std::__cxx11::string, std::__cxx11::string, int, int)': main.cpp:114:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=suffix[mid]; i<str.size(); i++) ~^~~~~~~~~~~ main.cpp: In function 'void readInput()': main.cpp:133:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0; j<aux.size(); j++) ~^~~~~~~~~~~