Compilare: user.cpp: In function ‘int main()’: user.cpp:63:11: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin>>s+1; ^ user.cpp:71:11: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin>>s+1; ^ user.cpp:75:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(viz[val]<G[val].size()) ^ user.cpp: In function ‘int query(int, int, int)’: user.cpp:32:1: warning: control reaches end of non-void function [-Wreturn-type] } ^