Compilare: main.cpp: In function 'int main()': main.cpp:52:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<=s.size(); i++) ~^~~~~~~~~~ main.cpp:61:19: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] if ((i+1<<(k-1)) > n) aux[i].pozb = -1; ~^~ main.cpp:62:41: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] else aux[i].pozb = P[k-1][(i+1<<(k-1))]; ~^~ main.cpp:79:17: warning: array subscript is above array bounds [-Warray-bounds] poz[P[19][i]] = i; ~~~~^