Compilare: main.cpp:5:34: warning: overflow in implicit constant conversion [-Woverflow] unsigned int n, k, a[mxN+5], mx=-1e6, ans, f[mxN+10], nr; ^~~ main.cpp: In function 'int main()': main.cpp:11:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=n;++i){ ~^~~ main.cpp:17:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=mx; ++i){ ~^~~~ main.cpp:19:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=i; j<=mx&&cnt<k; j+=i) ~^~~~ main.cpp:19:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=i; j<=mx&&cnt<k; j+=i) ~~~^~ main.cpp:21:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(cnt>=k) ~~~^~~