Compilare: main.cpp: In function 'void radix(std::__cxx11::string&, std::vector<int>&)': main.cpp:13:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<s.size(); i++){ ~^~~~~~~~~ main.cpp:15:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (p >= s.size()) ~~^~~~~~~~~~~ main.cpp:22:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<pos[i].size(); j++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void suffix_array(std::__cxx11::string&, std::vector<int>&)': main.cpp:44:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<s.size(); i++){ ~^~~~~~~~~ main.cpp:47:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i == s.size()) v[i].rank[1] = -1; ~~^~~~~~~~~~~ main.cpp:53:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=4; j<2*s.size(); j*=2){ ~^~~~~~~~~~~ main.cpp:59:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1; i<s.size(); i++){ ~^~~~~~~~~ main.cpp:70:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<s.size(); i++){ ~^~~~~~~~~ main.cpp:72:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (next_index >= s.size()) v[i].rank[1] = -1; ~~~~~~~~~~~^~~~~~~~~~~ main.cpp:79:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<s.size(); i++) ~^~~~~~~~~ main.cpp:41:15: warning: unused variable 'cnt' [-Wunused-variable] int i, j, cnt, ind[s.size()]; ^~~ main.cpp: In function 'void update(std::vector<int>&, int, int)': main.cpp:84:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (pos < bit.size()){ ~~~~^~~~~~~~~~~~ main.cpp: In function 'int binarySearch(std::vector<int>&, int, std::vector<bool>&)': main.cpp:100:50: warning: unused variable 'q2' [-Wunused-variable] int left = 0, right = bit.size()-1, mid, q1, q2; ^~ main.cpp: In function 'int main()': main.cpp:139:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<s.size(); i++) ~^~~~~~~~~ main.cpp:153:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<suffix.size(); i++) ~^~~~~~~~~~~~~~