Compilare: main.cpp: In function 'int main()': main.cpp:85:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0; i < cand.size(); i++ ) ~~^~~~~~~~~~~~~ main.cpp:97:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0; i < crit.size(); i++ ) fout << crit[i] << '\n'; ~~^~~~~~~~~~~~~ main.cpp:58:10: warning: unused variable 'j' [-Wunused-variable] int i, j, z, a, b, c, sz, delta, aux; ^ main.cpp:58:13: warning: unused variable 'z' [-Wunused-variable] int i, j, z, a, b, c, sz, delta, aux; ^ main.cpp:58:36: warning: unused variable 'aux' [-Wunused-variable] int i, j, z, a, b, c, sz, delta, aux; ^~~