#include<iostream> using namespace std; int main() { int a[102] = {0}; for (int k = 1; k <= 100; k++) { for (int i = k; i <= 100; i += k) { a[i] = !a[i]; } } for (int i = 1; i <= 100; i++) { if (a[i] == 1) { cout << i << " "; } } }