#include<iostream> using namespace std; int main() { int a[101] = {0}; for (int i = 1; i <= 100; i++) { for (int j = i; j <= 100; j += i) { a[j] = !a[j]; } } for (int i = 1; i <= 100; i++) { if (a[i] == 1) cout << i << " "; } }