Compilare: main.cpp: In function 'int main()': main.cpp:43:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(S.size()<K) S.push_back(CH[i]); ~~~~~~~~^~ main.cpp:45:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(S.size()==K) ~~~~~~~~^~~ main.cpp:49:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<S.size();j++) MAXIM[j]=S[j]; ~^~~~~~~~~ main.cpp:55:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<S.size();j++) MAXIM[j]=S[j]; ~^~~~~~~~~