Compilare: main.cpp: In function 'int tip2()': main.cpp:74:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v.size();i++) ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:88:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<s.size();i++) ~^~~~~~~~~ main.cpp:93:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<s.size();i++) ~^~~~~~~~~ main.cpp:107:23: warning: variable 'semn' set but not used [-Wunused-but-set-variable] int nr=0,ok=0,semn=1; ^~~~