Compilare: main.cpp: In function 'std::pair<int, int> querry(int)': main.cpp:24:11: warning: 'mpoz' may be used uninitialized in this function [-Wmaybe-uninitialized] int m,mpoz; ^~~~ main.cpp: In function 'int main()': main.cpp:49:19: warning: 'mpoz' may be used uninitialized in this function [-Wmaybe-uninitialized] p[-v[i].b]=q.b; ^ main.cpp:54:21: warning: 'mpoz' may be used uninitialized in this function [-Wmaybe-uninitialized] for(m=0;n--;mpoz=p[mpoz],m++) ~~~~^~~~~~~~