Compilare: main.cpp: In function 'long long unsigned int Check(long long unsigned int)': main.cpp:10:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=n; ++i) ~^~~ main.cpp: In function 'int main()': main.cpp:18:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;++i) ~^~~ main.cpp:32:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;++i) ~^~~ main.cpp:35:9: warning: 'sum' may be used uninitialized in this function [-Wmaybe-uninitialized] if(sum>=a[i]) ^~