public static void main(String[] args) throws IOException {
for (int i = 1; i < 2019; i++) {
if ((i + "").contains("2") || (i + "").contains("4")) continue;
for (int j = i + 1; j < 2019; j++) {
if ((j + "").contains("2") || (j + "").contains("4")) continue;
for (int k = j + 1; k < 2019; k++) {
if ((k + "").contains("2") || (k + "").contains("4")) continue;
if (i + j + k == 2019) count ++;
}
}
}
out.print(count);
out.flush();
}填空题?后面的数比前面的大就不重复了 暴力:)
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