Compilare: main.cpp: In function 'int main()': main.cpp:21:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i < s.size()) ~~^~~~~~~~~~ main.cpp:32:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<s.size(); i++) if(phi[i] == s1.size()) sol.push_back(i-2*s1.size()); ~^~~~~~~~~ main.cpp:32:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<s.size(); i++) if(phi[i] == s1.size()) sol.push_back(i-2*s1.size()); ~~~~~~~^~~~~~~~~~~~