整数元一

练习内容

1000\n2000\n3000\n4000\n5000\n6000\n7000\n8000\n9000\n1100\n2200\n3300\n4400\n5500\n6600\n7700\n8800\n9900\n1200\n2300\n3400\n4500\n5600\n6700\n7800\n8900\n9100\n1300\n2400\n3500