Compilare: main.cpp:9:19: warning: integer overflow in expression [-Woverflow] int nr,sum=(1<<31)-1; ~~~~~~~^~ main.cpp:10:16: warning: integer overflow in expression [-Woverflow] int sol=(1<<31)-1; ~~~~~~~^~ main.cpp: In function 'int main()': main.cpp:38:20: warning: integer overflow in expression [-Woverflow] if(sol==(1<<31)-1) ~~~~~~~^~