結果
| 問題 | No.182 新規性の虜 |
| コンテスト | |
| ユーザー |
nonamae
|
| 提出日時 | 2022-07-29 17:11:58 |
| 言語 | C11(gcc12 gnu拡張) (gcc 12.4.0) |
| 結果 |
AC
|
| 実行時間 | 9 ms / 5,000 ms |
| コード長 | 1,358 bytes |
| 記録 | |
| コンパイル時間 | 103 ms |
| コンパイル使用メモリ | 33,452 KB |
| 実行使用メモリ | 7,844 KB |
| 最終ジャッジ日時 | 2026-03-08 16:31:28 |
| 合計ジャッジ時間 | 1,038 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 27 |
コンパイルメッセージ
main.c: In function ‘radix_sort64’:
main.c:15:9: warning: implicit declaration of function ‘memset’ [-Wimplicit-function-declaration]
15 | memset(work2, 0, 0x10000 * sizeof(uint64_t));
| ^~~~~~
main.c:4:1: note: include ‘<string.h>’ or provide a declaration of ‘memset’
3 | #include <stdint.h>
+++ |+#include <string.h>
4 |
main.c:15:9: warning: incompatible implicit declaration of built-in function ‘memset’ [-Wbuiltin-declaration-mismatch]
15 | memset(work2, 0, 0x10000 * sizeof(uint64_t));
| ^~~~~~
main.c:15:9: note: include ‘<string.h>’ or provide a declaration of ‘memset’
main.c: In function ‘main’:
main.c:38:43: warning: format ‘%lld’ expects argument of type ‘long long int *’, but argument 2 has type ‘int64_t *’ {aka ‘long int *’} [-Wformat=]
38 | for (int i = 0; i < n; ++i) scanf("%lld", &a[i]);
| ~~~^ ~~~~~
| | |
| | int64_t * {aka long int *}
| long long int *
| %ld
main.c:36:12: warning: ignoring return value of ‘scanf’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
36 | int n; scanf("%d", &n);
| ^~~~~~~~~~~~~~~
main.c:38:33: warning: ignoring return value of ‘scanf’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
38 | for (int i = 0; i < n; ++i) scanf("%lld", &a[i]);
| ^~~~~~~~~~~~~~~~~~~~
ソースコード
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
void radix_sort64(uint64_t *a, int a_len) {
uint64_t *work0 = (uint64_t *)calloc(0x10000, sizeof(uint64_t));
uint64_t *work1 = (uint64_t *)calloc(a_len, sizeof(uint64_t));
uint64_t *work2 = (uint64_t *)calloc(0x10000, sizeof(uint64_t));
#ifdef LOCAL
if (work0 == NULL || work1 == NULL || work2 == NULL) exit(EXIT_FAILURE);
#endif
uint64_t shift = 0;
__uint128_t x = 0;
while (shift < 64ul) {
memset(work2, 0, 0x10000 * sizeof(uint64_t));
for (int i = 0; i < a_len; i++) {
x = (a[i] >> shift) & 0xffff;
work2[x]++;
work1[i] = a[i];
}
work0[0] = 0;
for (uint64_t u = 0; u < 0xffff; u++) work0[u + 1] = work0[u] + work2[u];
for (int i = 0; i < a_len; i++) {
x = (work1[i] >> shift) & 0xffff;
a[work0[x]] = work1[i];
work0[x]++;
}
shift += 16;
}
free(work0);
free(work1);
free(work2);
}
int main(void) {
int n; scanf("%d", &n);
int64_t a[n + 2];
for (int i = 0; i < n; ++i) scanf("%lld", &a[i]);
a[n] = 0;
a[n + 1] = 1e9 + 7;
radix_sort64(a, n + 2);
int ans = 0;
for (int i = 1; i <= n; ++i) if (a[i - 1] != a[i] && a[i] != a[i + 1]) ++ans;
printf("%d\n", ans);
return 0;
}
nonamae