Compilare: main.cpp: In function 'int main()': main.cpp:9:26: warning: unused variable 'p2' [-Wunused-variable] 9 | long long n,rez=0,p1,p2,r1,r2,k=1,a,b; | ^~ main.cpp:43:19: warning: 'r2' may be used uninitialized in this function [-Wmaybe-uninitialized] 43 | for(int i=r1;i<=r2;i++) | ~^~~~ main.cpp:41:6: warning: 'r1' may be used uninitialized in this function [-Wmaybe-uninitialized] 41 | a=v[r1]; | ~^~~~~~