1681




2





1682




3





1683




2





1684




2





1685




3





1686




2





1687




2





1688




2





1689




2





1690




3





1691




2





1692




1





1693




1





1694




2





1695




2





1696




3





1697




4





1698




4





1699




3





1700




3





1701




1





1702




2





1703




3





1704




1





1705




1





1706




1





1707




2





1708




4





1709




2





1710




2





1711




2





1712




1





1713




1





1714




1





1715




3





1716




3





1717




2





1718




1





1719




3





1720




2





1721




3





1722




2





1723




3





1724




1





1725




2





1726




1





1727




0





1728




1





1729




1





1730




3





1731




4





1732




3





1733




2





1734




3





1735




2





1736




1





1737




0





1738




1





1739




1





1740




1





1741




2





1742




2





1743




1





1744




1





1745




2





1746




1





1747




2





1748




2





1749




2





1750




1





1751




0





1752




2





1753




1





1754




1





1755




1





1756




3





1757




3





1758




4





1759




1





1760




4





1761




2





1762




3





1763




1





1764




2





1765




3





1766




2





1767




2





1768




1





1769




0





1770




0





1771




2





1772




2





1773




2





1774




3





1775




3





1776




3





1777




2





1778




5





1779




5





1780




4





1781




4





1782




1





1783




2





1784




1





1785




4





1786




4





1787




2





1788




2





1789




4





1790




4





1791




2





1792




1





1793




2





1794




0





1795




2





1796




2





1797




3





1798




1





1799




1





1800




3





<-Solutions 1561 to 1680…
->Solutions 1801 to 1920…