#include <iostream>
using namespace std;
int main()
{
for (int i =6; i <100; i++) {
// cin >> s;
int s = (i + 1) / 7;
int n = 36;
while (s < 2050) {
s = s * 2;
n = n + 3;
}
if (n == 66){
cout << i << endl;
}
}
return 0;
}
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