fn main() {
    println!("{}", part_one(&PART_ONE_INPUT));
}
fn part_one(input: &[u32]) -> u32 {
    let target_sum = 2020;
    let mut foo = 0;
    let mut bar = 0;
    'outer: for i in input.iter() {
        foo = *i;
        for j in &input[1..input.len()] {
            bar = *j;
            if foo + bar == target_sum {
                break 'outer;
            }
        }
    }
    foo * bar
}
#[test]
fn test_part_one() {
    assert_eq!(part_one(&PART_ONE_TEST_INPUT), 514579)
}
const PART_ONE_TEST_INPUT: [u32; 6] = [1721, 979, 366, 299, 675, 1456];
const PART_ONE_INPUT: [u32; 200] = [
    1939, 1585, 1712, 1600, 1370, 1447, 1247, 1446, 1323, 1713, 1277, 1946, 1677, 1428, 1231, 1481,
    1976, 1709, 1508, 1668, 1302, 77, 1351, 1605, 1999, 1982, 1583, 1756, 1957, 1624, 1745, 1938,
    1784, 1403, 1642, 1691, 569, 1762, 1555, 1937, 1383, 1897, 1334, 1965, 1683, 1475, 1776, 1791,
    1707, 1987, 1233, 1416, 1769, 1345, 1874, 1255, 1744, 1944, 1404, 1360, 1304, 1417, 1977, 1656,
    790, 1788, 1353, 1296, 1673, 1810, 1684, 1742, 1425, 1887, 1444, 1352, 1229, 1414, 1493, 1402,
    1947, 1669, 1412, 1531, 1474, 1637, 1314, 1607, 1829, 1923, 1949, 1757, 1307, 1714, 1748, 1550,
    1372, 1615, 1235, 1272, 1408, 1749, 1687, 1613, 1528, 1561, 341, 1308, 1660, 1667, 1313, 1991,
    1675, 1394, 1704, 1303, 1440, 1592, 1857, 1752, 1839, 1397, 1699, 1426, 1878, 1759, 1814, 1096,
    372, 1596, 1500, 1774, 1627, 1696, 1851, 1020, 1819, 1292, 1616, 1672, 1279, 1543, 1526, 1682,
    1568, 1582, 1921, 922, 1773, 1482, 1238, 1973, 1517, 1909, 409, 1634, 1468, 1445, 1801, 1631,
    1407, 1820, 1603, 1495, 1333, 1241, 1849, 82, 1339, 1413, 90, 1662, 1291, 1740, 1340, 1365,
    2003, 1546, 1621, 1650, 1518, 1807, 1382, 1433, 1968, 1940, 1986, 1437, 1651, 1237, 1862, 1409,
    1200, 2002, 2009, 1735, 1487, 1706, 1643, 1505,
];