Compilare: main.cpp: In function 'int main()': main.cpp:14:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sir.size();i++) ~^~~~~~~~~~~ main.cpp:18:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=ch.size();i++) ~^~~~~~~~~~~ main.cpp:21:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<ch.size();j++)ap[ch[j]]=0; ~^~~~~~~~~~ main.cpp:22:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<sir.size();j++) ~^~~~~~~~~~~ main.cpp:26:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int g=0;g<ch.size();g++) ~^~~~~~~~~~ main.cpp:30:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int g=0;g<ch.size();g++) ~^~~~~~~~~~ main.cpp:33:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<ch.size();j++)val.push_back(ap[ch[j]]); ~^~~~~~~~~~ main.cpp:35:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=ch.size()-i;j<ch.size();j++)counter-=val[j]; ~^~~~~~~~~~