Compilare: main.cpp: In function 'int main()': main.cpp:3:240: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] using namespace std;ifstream in("logik.in");ofstream out("logik.out");int n,a[200002];vector<int>b;unsigned rez=(1<<30)-1;int main(){in>>n;for(int i=1;i<=n;i++){in>>a[i];if(a[i]&1)b.push_back(i);else rez&=a[i];}if(b.size()>=2)for(int i=0;i<b.size()-1;i++){int temprez=0;for(int j=b[i];j<=b[i+1];j++)temprez|=a[j];rez&=temprez;}if(n==1&&b.size()==1){out<<"-1";return 0;}out<<rez;return 0;} ~^~~~~~~~~~~