Compilare: main.cpp: In function 'void invers(int, int)': main.cpp:28:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < intr.size(); ++i) { ~~^~~~~~~~~~~~~ main.cpp:43:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < intr.size(); ++i) { ~~^~~~~~~~~~~~~ main.cpp: In function 'int getKth(int)': main.cpp:82:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < intr.size(); ++i) { ~~^~~~~~~~~~~~~ main.cpp: In function 'void reindexare()': main.cpp:100:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < intr.size(); ++i) { ~~^~~~~~~~~~~~~ main.cpp:101:13: warning: variable 'pas' set but not used [-Wunused-but-set-variable] int pas = 1; ^~~ main.cpp: In function 'int main()': main.cpp:115:9: warning: unused variable 'sq' [-Wunused-variable] int sq = sqrt(N); ^~