Compilare: main.cpp: In function 'int main()': main.cpp:11:10: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] f>>s1+1; ~~^~ main.cpp:12:10: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] f>>s2+1; ~~^~ main.cpp:32:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sol.size();++i) g<<sol[i]<<' '; ~^~~~~~~~~~~