Compilare: main.cpp:8:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] main() ^ main.cpp: In function 'int main()': main.cpp:34:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(d.size() > n) ~~~~~~~~~^~~ main.cpp:46:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(t < urm.size() && urm[t] == '1') ~~^~~~~~~~~~~~ main.cpp:49:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(t == urm.size()) ~~^~~~~~~~~~~~~