#include<iostream> using namespace std; const int SIZE = 100; int main() { int p[SIZE]; int n, tot, i, cn; tot = 0; cin >> n; for (i = 1; i <= n; i++) p[i] = 1; for (i = 2; i <= n; i++) { if (p[i] == 1) tot++; cn = i * 2; whil...