Compilare: main.cpp: In function 'void CalculateZ()': main.cpp:17:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < C.size(); i++) ~~^~~~~~~~~~ main.cpp:22:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(dr < C.size() && C[dr] == C[dr - st]) ~~~^~~~~~~~~~ main.cpp:36:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(dr < C.size() && C[dr] == C[dr - st]) ~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:58:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < C.size(); i++) ~~^~~~~~~~~~