#include <iostream> using namespace std; int a[13], b, now; int main() { for ( int i = 1 ; i <= 12 ; ++ i ) { cin >> a[i]; now += 300; if ( now < a[i] ) { cout << -i << endl; return 0; } now -= a[i]; b += now / 100 * 100; now %= 100; } cout << b * 6 / 5 + now << endl; return 0; }