diff --git a/src/basic_ranges_demo.cc b/src/basic_ranges_demo.cc
deleted file mode 100644
index c791bed..0000000
--- a/src/basic_ranges_demo.cc
+++ /dev/null
@@ -1,157 +0,0 @@
-#include "basic_ranges_demo.h"
-
-#include <algorithm>
-
-#include <iostream>
-#include <vector>
-#include <queue>
-
-#include "common.h"
-
-std::vector<uint32_t> unsort_data;
-std::vector<uint32_t> release_data;
-
-void func_test(int n1, int n2, int n3, int n4) {
-
-    struct inner_t {
-        /// n4       n3       n2       n1
-        /// 00000000 00000000 00000000 00000000
-        uint32_t n;
-        uint32_t prefix;
-        int offset;
-    };
-
-    constexpr uint32_t MASK_01 = (uint32_t)0b01 << 30;
-    constexpr uint32_t MASK_10 = (uint32_t)0b10 << 30;
-    constexpr uint32_t MASK_11 = (uint32_t)0b11 << 30;
-
-    std::queue<inner_t> data;
-
-    data.emplace(inner_t {
-        .n = static_cast<uint32_t>(n1 | n2 << 8 | n3 << 16 | n4 << 24),
-        .prefix = 0x00000000,
-        .offset = 0,
-    });
-
-    while (!data.empty()) {
-        if (!data.front().n) {
-
-            /// range release
-//            release_data.emplace_back(data.front().prefix);
-            unsort_data.emplace_back(data.front().prefix);
-
-            data.pop();
-            continue;
-        }
-
-        if (data.front().n & 0xFF) {
-            auto next = inner_t {
-                .n = data.front().n - 0x00000001,
-                .prefix = data.front().prefix,
-                .offset = data.front().offset + 2,
-            };
-            data.emplace(next);
-        }
-        if (data.front().n & 0xFF00) {
-            auto next = inner_t {
-                .n = data.front().n - 0x00000100,
-                .prefix = data.front().prefix | (MASK_01 >> data.front().offset),
-                .offset = data.front().offset + 2,
-            };
-            data.emplace(next);
-        }
-        if (data.front().n & 0xFF0000) {
-            auto next = inner_t {
-                .n = data.front().n - 0x00010000,
-                .prefix = data.front().prefix | (MASK_10 >> data.front().offset),
-                .offset = data.front().offset + 2,
-            };
-            data.emplace(next);
-        }
-        if (data.front().n & 0xFF000000) {
-            auto next = inner_t {
-                .n = data.front().n - 0x01000000,
-                .prefix = data.front().prefix | (MASK_11 >> data.front().offset),
-                .offset = data.front().offset + 2,
-            };
-            data.emplace(next);
-        }
-        data.pop();
-    }
-}
-
-void load_ranges() {
-//    std::cout << "ok" << std::endl;
-
-    unsort_data.reserve(7311921);
-    release_data.reserve(7311921);
-
-    std::vector<int> start_point;
-
-    for (int n = 0; n <= 7; ++n) { // number of 1x2 and 2x1 block -> 0 ~ 7
-        for (int n_2x1 = 0; n_2x1 <= n; ++n_2x1) { // number of 2x1 block -> 0 ~ n
-            for (int n_1x1 = 0; n_1x1 <= (14 - n * 2); ++n_1x1) { // number of 1x1 block -> 0 ~ (14 - 2n)
-                int n_1x2 = n - n_2x1;
-                int n_space = 16 - n * 2 - n_1x1;
-
-                start_point.emplace_back(unsort_data.size());
-
-                func_test(n_space, n_1x2, n_2x1, n_1x1);
-
-                /// 0x0 -> 00 | 1x2 -> 01 | 2x1 -> 10 | 1x1 -> 11
-            }
-        }
-    }
-    start_point.emplace_back(unsort_data.size());
-
-    /// self-build sort
-
-    struct node {
-        uint32_t value;
-        int index;
-        int limit;
-    };
-
-    struct compare {
-        bool operator() (node node1, node node2) {
-            return node1.value > node2.value;
-        }
-    };
-
-    std::priority_queue<node, std::vector<node>, compare> min_heap;
-
-    for (int i = 0; i < start_point.size() - 1; ++i) {
-        min_heap.push({
-            .value = unsort_data[start_point[i]],
-            .index = start_point[i],
-            .limit = start_point[i + 1] - 1,
-        });
-    }
-
-    while (!min_heap.empty()) {
-        auto current = min_heap.top();
-        min_heap.pop();
-
-        release_data.emplace_back(current.value);
-
-        if (current.index != current.limit) {
-            min_heap.push({
-                .value = unsort_data[current.index + 1],
-                .index = current.index + 1,
-                .limit = current.limit,
-            });
-        }
-    }
-
-
-    /// stl quick sort
-//    sort(unsort_data.begin(), unsort_data.end());
-//    release_data.insert(release_data.begin(), unsort_data.begin(), unsort_data.end());
-
-    std::cout << "size: " << release_data.size() << std::endl;
-
-//    for (const auto &range: release_data) {
-//        printf("%08X\n", Common::range_reverse(range));
-//    }
-
-}
diff --git a/src/basic_ranges_demo.h b/src/basic_ranges_demo.h
deleted file mode 100644
index 628fa32..0000000
--- a/src/basic_ranges_demo.h
+++ /dev/null
@@ -1,3 +0,0 @@
-#pragma once
-
-void load_ranges();
diff --git a/src/main.cc b/src/main.cc
index 56ac321..6bf1373 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -9,7 +9,7 @@
 #include "analyse.h"
 
 //#include "core_demo.h"
-#include "basic_ranges_demo.h"
+//#include "basic_ranges_demo.h"
 
 #include <thread>
 #include <algorithm>
@@ -244,10 +244,10 @@ int main() {
 
 //    load_ranges();
     BasicRanges::build();
-//    std::cout << "size: " << BasicRanges::fetch()->size() << std::endl;
-    for (const auto &range : *BasicRanges::fetch()) {
-        printf("%08X\n", range);
-    }
+    std::cout << "size: " << BasicRanges::fetch()->size() << std::endl;
+//    for (const auto &range : *BasicRanges::fetch()) {
+//        printf("%08X\n", range);
+//    }
 
     std::cerr << (clock() - start_time) * 1000 / CLOCKS_PER_SEC << "ms" << std::endl;
 //    std::cerr << (clock() - start_time) * 1000000 / CLOCKS_PER_SEC << "us" << std::endl;