C++
#include <iostream>
using namespace std;
void main(){
char a[100];
int n,k=0;
cout<<"Input number of massive elements: ";
cin>>n;
for(int i=0;i<n;i++){
cout<<"input "<<i<<" element: ";
cin>>a[i];
if(a[i]<0)
k++;
}
if(k>3)
cout<<"Yes"<<endl;
else
cout<<"No"<<endl;
}
Var a,b,c:real;n,i:integer;beginWrite('Ввидите N='); Readln(n);for i:=1 to N do b:=b+(2*n+1);c:=1;for i:=1 to n do c:=c*(2*n+1);a:=b/c;WritelN('A=',A);end.