diff --git a/algorithm/math/CMakeLists.txt b/algorithm/math/CMakeLists.txt
index 78df83d8..4549a1d2 100644
--- a/algorithm/math/CMakeLists.txt
+++ b/algorithm/math/CMakeLists.txt
@@ -12,7 +12,7 @@ LIST(APPEND leetcode_order 118_119 169 217 263)
 LIST(APPEND leetcode_order 268 283 338 343 372)
 LIST(APPEND leetcode_order 401 414 461 728 781)
 LIST(APPEND leetcode_order 136 75 883 1018 1185)
-LIST(APPEND leetcode_order 670 1252 1362)
+LIST(APPEND leetcode_order 670 1252 1362 1363)
 LIST(TRANSFORM leetcode_order PREPEND leetcode_)
 
 set(dependencies ${dependencies} ${leetcode_order})
diff --git a/algorithm/math/leetcode_1363.cpp b/algorithm/math/leetcode_1363.cpp
new file mode 100644
index 00000000..6239f690
--- /dev/null
+++ b/algorithm/math/leetcode_1363.cpp
@@ -0,0 +1,155 @@
+
+// SPDX-License-Identifier: AGPL-3.0-or-later
+/*
+CS203_DSAA_template
+
+Copyright (C) 2020-2023 nanoseeds
+
+*/
+#include "leetcode_1363_test.hpp"
+
+#include <numeric>
+
+namespace leetcode_1363 {
+inline string removeLastZeros(const string &input) {
+    if (input.empty()) {
+        return input;
+    }
+    const auto length{input.length()};
+    size_t pre_zeros{0};
+    for (size_t i{0}; i < length; i++) {
+        if (input[i] == '0') {
+            pre_zeros += 1;
+        } else {
+            break;
+        }
+    }
+    if (pre_zeros == length) {
+        return "0";
+    }
+    const auto will_return{input.substr(pre_zeros, length - pre_zeros)};
+    return will_return;
+}
+
+string leetcode_1363::largestMultipleOfThree(const vector<int32_t> &digits) {
+    const auto sums = std::accumulate(digits.begin(), digits.end(), 0);
+    if (sums % 3 == 0) {
+        string result{};
+        vector<int32_t> sorted{digits};
+        std::sort(sorted.begin(), sorted.end(), std::greater<>());
+        for (const auto &digit: sorted) {
+            result += std::to_string(digit);
+        }
+        return removeLastZeros(result);
+    }
+    vector<int32_t> triples{}, triples_plusone{}, triples_plustwo{};
+    for (const auto &digit: digits) {
+        if (digit % 3 == 0) {
+            triples.push_back(digit);
+        } else if (digit % 3 == 1) {
+            triples_plusone.push_back(digit);
+        } else {
+            triples_plustwo.push_back(digit);
+        }
+    }
+    std::sort(triples_plusone.begin(), triples_plusone.end(), std::greater<>());
+    std::sort(triples_plustwo.begin(), triples_plustwo.end(), std::greater<>());
+
+    if (sums % 3 == 1) {
+        if (triples_plusone.empty()) {
+            if (triples_plustwo.size() < 2) {
+                return {};
+            }
+            triples_plustwo.pop_back();
+            triples_plustwo.pop_back();
+        } else {
+            triples_plusone.pop_back();
+        }
+        for (const auto plusone: triples_plusone) {
+            triples.push_back(plusone);
+        }
+        for (const auto plustwo: triples_plustwo) {
+            triples.push_back(plustwo);
+        }
+        std::sort(triples.begin(), triples.end(), std::greater<>());
+        string result{};
+        for (const auto &digit: triples) {
+            result += std::to_string(digit);
+        }
+        return removeLastZeros(result);
+    } else if (sums % 3 == 2) {
+        if (triples_plustwo.empty()) {
+            if (triples_plusone.size() < 2) {
+                return {};
+            }
+            triples_plusone.pop_back();
+            triples_plusone.pop_back();
+        } else {
+            triples_plustwo.pop_back();
+        }
+        for (const auto plusone: triples_plusone) {
+            triples.push_back(plusone);
+        }
+        for (const auto plustwo: triples_plustwo) {
+            triples.push_back(plustwo);
+        }
+        std::sort(triples.begin(), triples.end(), std::greater<>());
+        string result{};
+        for (const auto &digit: triples) {
+            result += std::to_string(digit);
+        }
+        return removeLastZeros(result);
+    }
+    return {};
+}
+
+namespace leetcode_1363::optimize {
+string largestMultipleOfThree(const vector<int32_t> &digits) {
+    const auto sums = std::accumulate(digits.begin(), digits.end(), 0);
+    std::array<int32_t, 10> cnt{0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+    for (const auto &digit: digits) {
+        cnt[digit] += 1;
+    }
+    if (sums % 3 == 1) {
+        if ((cnt[1] + cnt[4] + cnt[7]) >= 1) {
+            for (const auto num: {1, 4, 7}) {
+                cnt[num] -= 1;
+                break;
+            }
+        } else if ((cnt[2] + cnt[5] + cnt[8]) >= 2) {
+            for (uint8_t x{0}; x < 2u; x++) {
+                for (const auto num: {2, 5, 8}) {
+                    cnt[num] -= 1;
+                    break;
+                }
+            }
+        } else {
+            return {};
+        }
+    } else if (sums % 3 == 2) {
+        if ((cnt[2] + cnt[5] + cnt[8]) >= 1) {
+            for (const auto num: {2, 5, 8}) {
+                cnt[num] -= 1;
+                break;
+            }
+        } else if ((cnt[1] + cnt[4] + cnt[7]) >= 2) {
+            for (uint8_t x{0}; x < 2u; x++) {
+                for (const auto num: {1, 4, 7}) {
+                    cnt[num] -= 1;
+                    break;
+                }
+            }
+        } else {
+            return {};
+        }
+    }
+    string result{};
+    for (int32_t i{9}; i >= 0; i--) {
+        result += std::string(cnt[i], static_cast<char>('0' + i));
+    }
+    return removeLastZeros(result);
+}
+
+}
+
+}
diff --git a/algorithm/math/leetcode_1363_test.hpp b/algorithm/math/leetcode_1363_test.hpp
new file mode 100644
index 00000000..fe324516
--- /dev/null
+++ b/algorithm/math/leetcode_1363_test.hpp
@@ -0,0 +1,58 @@
+
+// SPDX-License-Identifier: AGPL-3.0-or-later
+/*
+CS203_DSAA_template
+
+Copyright (C) 2022 nanoseeds
+
+*/
+//@Tag 数学
+#ifndef CS203_DSAA_TEMPLATE_ALGORITHM_LIST_LEETCODE_1363_TEST_HPP
+#define CS203_DSAA_TEMPLATE_ALGORITHM_LIST_LEETCODE_1363_TEST_HPP
+
+#include <catch_main.hpp>
+#include <cstdint>
+#include <cstddef>
+#include <vector>
+
+namespace leetcode_1363 {
+
+namespace leetcode_1363 {
+string largestMultipleOfThree(const vector<int32_t> &digits);
+namespace optimize{
+string largestMultipleOfThree(const vector<int32_t> &digits);
+}
+}
+
+using Catch::Matchers::Equals;
+
+TEST_CASE("1-1 [test_1363]", "[test_1363]") {
+    const vector<int32_t> input{8, 1, 9};
+    constexpr const char *const result{"981"};
+    CHECK(result == leetcode_1363::largestMultipleOfThree(input));
+    CHECK(result == leetcode_1363::optimize::largestMultipleOfThree(input));
+}
+
+TEST_CASE("1-2 [test_1363]", "[test_1363]") {
+    const vector<int32_t> input{8, 6, 7, 1, 0};
+    constexpr const char *const result{"8760"};
+    CHECK(result == leetcode_1363::largestMultipleOfThree(input));
+    CHECK(result == leetcode_1363::optimize::largestMultipleOfThree(input));
+}
+
+TEST_CASE("1-3 [test_1363]", "[test_1363]") {
+    const vector<int32_t> input{1};
+    constexpr const char *const result{""};
+    CHECK(result == leetcode_1363::largestMultipleOfThree(input));
+    CHECK(result == leetcode_1363::optimize::largestMultipleOfThree(input));
+}
+
+TEST_CASE("1-4 [test_1363]", "[test_1363]") {
+    const vector<int32_t> input{0, 0, 0, 0, 0, 0};
+    constexpr const char *const result{"0"};
+    CHECK(result == leetcode_1363::largestMultipleOfThree(input));
+    CHECK(result == leetcode_1363::optimize::largestMultipleOfThree(input));
+}
+}
+#endif //CS203_DSAA_TEMPLATE_ALGORITHM_LIST_LEETCODE_1363_TEST_HPP
+