제출 #930926

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
930926	2024-02-20 20:06:22	rainboy	카드 역배치 (KOI15_reversal)	C11	25 / 25	0 ms	420 KiB

reversal

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#include <stdio.h>
#define N 20
#define Q 10
int main() {
  static int aa[N];
  int h, i, l, r, tmp;
  for (i = 0; i < N; i++)
    aa[i] = i + 1;
  for (h = 0; h < Q; h++) {
    scanf("%d%d", &l, &r), l--, r--;
    while (l < r) {
      tmp = aa[l], aa[l] = aa[r], aa[r] = tmp;
      l++, r--;
    }
  }
  for (i = 0; i < N; i++)
    printf("%d ", aa[i]);
  printf("\n");
  return 0;
}
 
 
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컴파일 시 표준 에러 (stderr) 메시지

reversal.c: In function 'main':
reversal.c:13:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |   scanf("%d%d", &l, &r), l--, r--;
      |   ^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 25 / 25