Compilare: main.cpp: In function 'void Suffix_Array()': main.cpp:19:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 2; i <= sir.size(); ++ i ) { ~~^~~~~~~~~~~~~ main.cpp:23:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < sir.size(); ++ j ) { ~~^~~~~~~~~~~~ main.cpp:29:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 1; j < sir.size(); ++ j ) { ~~^~~~~~~~~~~~ main.cpp:35:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; (1<<(i-1)) <= sir.size(); ++ i ) { ~~~~~~~~~~~^~~~~~~~~~~~~ main.cpp:36:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < sir.size(); ++ j ) { ~~^~~~~~~~~~~~ main.cpp:44:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 1; j < sir.size(); ++ j ) { ~~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:79:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (val >= A.size()) { ~~~~^~~~~~~~~~~