Compilare: main.cpp: In function 'int main()': main.cpp:16:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<s.size();j++) ~^~~~~~~~~ main.cpp:20:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<s1.size();j++) ~^~~~~~~~~~ main.cpp:44:30: warning: iteration 30 invokes undefined behavior [-Waggressive-loop-optimizations] f[j]=f1[j]=opp[j]=0; ~~~~~~^~ main.cpp:42:22: note: within this loop for(int j=0;j<=30;j++) ~^~~~