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| 1 | - | #include <cstdio> |
| 1 | + | #include <cstdio> |
| 2 | - | |
| 2 | + | |
| 3 | - | using namespace std; |
| 3 | + | using namespace std; |
| 4 | - | |
| 4 | + | |
| 5 | - | bool readInt(int &num) { |
| 5 | + | bool readInt(int &num) {
|
| 6 | - | int ch = getchar_unlocked(); |
| 6 | + | int ch = getchar_unlocked(); |
| 7 | - | num = 0; |
| 7 | + | num = 0; |
| 8 | - | |
| 8 | + | |
| 9 | - | for (; 48 <= ch && ch <= 57; ch = getchar_unlocked()) { |
| 9 | + | for (; 48 <= ch && ch <= 57; ch = getchar_unlocked()) {
|
| 10 | - | num = (num << 3) + (num << 1) + ch - 48; |
| 10 | + | num = (num << 3) + (num << 1) + ch - 48; |
| 11 | - | } |
| 11 | + | } |
| 12 | - | |
| 12 | + | |
| 13 | - | if (ch == 32) |
| 13 | + | if (ch == 32) |
| 14 | - | return true; |
| 14 | + | return true; |
| 15 | - | |
| 15 | + | |
| 16 | - | if (ch == 10) |
| 16 | + | if (ch == 10) |
| 17 | - | return false; |
| 17 | + | return false; |
| 18 | } | |
| 19 | - | |
| 19 | + | |
| 20 | - | void printInt(int n) { |
| 20 | + | void printInt(int n) {
|
| 21 | - | if (n > 0) { |
| 21 | + | if (n > 0) {
|
| 22 | - | printInt(n / 10); |
| 22 | + | printInt(n / 10); |
| 23 | - | } |
| 23 | + | } |
| 24 | - | if (n != 0) |
| 24 | + | if (n != 0) |
| 25 | - | putchar_unlocked(n % 10 + 48); |
| 25 | + | putchar_unlocked(n % 10 + 48); |
| 26 | } | |
| 27 | - | |
| 27 | + | |
| 28 | - | const int k = 256; |
| 28 | + | const int k = 256; |
| 29 | - | int counts[k]; |
| 29 | + | int counts[k]; |
| 30 | - | |
| 30 | + | |
| 31 | - | void CountingSort(int *arr, int* result, int &n, int r) { |
| 31 | + | void CountingSort(int *arr, int* result, int &n, int r) {
|
| 32 | - | int byte = 255 << r; |
| 32 | + | int byte = 255 << r; |
| 33 | - | |
| 33 | + | |
| 34 | - | for (int i = 0; i < k; ++i) counts[i] = 0; |
| 34 | + | for (int i = 0; i < k; ++i) counts[i] = 0; |
| 35 | - | |
| 35 | + | |
| 36 | - | for (int i = 0; i < n; ++i) { |
| 36 | + | for (int i = 0; i < n; ++i) {
|
| 37 | - | ++counts[(arr[i] & byte) >> r]; |
| 37 | + | ++counts[(arr[i] & byte) >> r]; |
| 38 | - | } |
| 38 | + | } |
| 39 | - | |
| 39 | + | |
| 40 | - | for (int i = 1; i < k; ++i) { |
| 40 | + | for (int i = 1; i < k; ++i) {
|
| 41 | - | counts[i] += counts[i - 1]; |
| 41 | + | counts[i] += counts[i - 1]; |
| 42 | - | } |
| 42 | + | } |
| 43 | - | |
| 43 | + | |
| 44 | - | for (int i = n - 1; i >= 0; --i) { |
| 44 | + | for (int i = n - 1; i >= 0; --i) {
|
| 45 | - | result[--counts[(arr[i] & byte) >> r]] = arr[i]; |
| 45 | + | result[--counts[(arr[i] & byte) >> r]] = arr[i]; |
| 46 | - | } |
| 46 | + | } |
| 47 | } | |
| 48 | - | |
| 48 | + | |
| 49 | - | void LSDSort(int *arr, int &n) { |
| 49 | + | void LSDSort(int *arr, int &n) {
|
| 50 | - | int* result = new int[n]; |
| 50 | + | int* result = new int[n]; |
| 51 | - | CountingSort(arr, result, n, 0); |
| 51 | + | CountingSort(arr, result, n, 0); |
| 52 | - | CountingSort(result, arr, n, 8); |
| 52 | + | CountingSort(result, arr, n, 8); |
| 53 | - | CountingSort(arr, result, n, 16); |
| 53 | + | CountingSort(arr, result, n, 16); |
| 54 | - | CountingSort(result, arr, n, 24); |
| 54 | + | CountingSort(result, arr, n, 24); |
| 55 | } | |
| 56 | - | |
| 56 | + | |
| 57 | - | const int maxSize = 25000000; |
| 57 | + | const int maxSize = 25000000; |
| 58 | - | |
| 58 | + | |
| 59 | - | int main() { |
| 59 | + | int main() {
|
| 60 | - | int* arr = new int[maxSize]; |
| 60 | + | int* arr = new int[maxSize]; |
| 61 | - | |
| 61 | + | |
| 62 | - | int x = 0; |
| 62 | + | int x = 0; |
| 63 | - | int size = 0; |
| 63 | + | int size = 0; |
| 64 | - | while (readInt(x)) { |
| 64 | + | while (readInt(x)) {
|
| 65 | - | arr[size++] = x; |
| 65 | + | arr[size++] = x; |
| 66 | - | } |
| 66 | + | } |
| 67 | - | arr[size++] = x; |
| 67 | + | arr[size++] = x; |
| 68 | - | |
| 68 | + | |
| 69 | - | LSDSort(arr, size); |
| 69 | + | LSDSort(arr, size); |
| 70 | - | |
| 70 | + | |
| 71 | - | for (int i = 9; i < size; i += 10) { |
| 71 | + | for (int i = 9; i < size; i += 10) {
|
| 72 | - | printInt(arr[i]); |
| 72 | + | printInt(arr[i]); |
| 73 | - | putchar_unlocked(32); |
| 73 | + | putchar_unlocked(32); |
| 74 | - | } |
| 74 | + | } |
| 75 | - | return 0; |
| 75 | + | return 0; |
| 76 | } |