Compilare: main.cpp: In function 'void cerr2()': main.cpp:37:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=1; sum>s[i]; ++i); ^~~ main.cpp:38:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' { ^ main.cpp: In function 'int main()': main.cpp:69:13: warning: iteration 54 invokes undefined behavior [-Waggressive-loop-optimizations] v[i]=(1LL<<i)/2; ~~~~^~~~~~~~~~~ main.cpp:67:19: note: within this loop for(int i=1; i<=55; i++) ~^~~~