제출 #795912

#제출 시각아이디문제언어결과실행 시간메모리
795912rainboy점 모으기 (KOI13_collect)C11
24 / 24
26 ms2132 KiB
#include <stdio.h> #define N 100000 unsigned int X = 12345; int rand_() { return (X *= 3) >> 1; } void sort(int *aa, int l, int r) { while (l < r) { int i = l, j = l, k = r, a = aa[l + rand_() % (r - l)], tmp; while (j < k) if (aa[j] == a) j++; else if (aa[j] < a) { tmp = aa[i], aa[i] = aa[j], aa[j] = tmp; i++, j++; } else { k--; tmp = aa[j], aa[j] = aa[k], aa[k] = tmp; } sort(aa, l, i); l = k; } } int main() { static int xx[N], yy[N]; int n, i, j, ans; scanf("%*d%d", &n); for (i = 0; i < n; i++) scanf("%d%d", &xx[i], &yy[i]); sort(xx, 0, n), sort(yy, 0, n); ans = 0; for (i = 0, j = n - 1; i < j; i++, j--) ans += xx[j] - xx[i]; for (i = 0, j = n - 1; i < j; i++, j--) ans += yy[j] - yy[i]; printf("%d\n", ans); return 0; }

컴파일 시 표준 에러 (stderr) 메시지

ee.c: In function 'main':
ee.c:34:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |  scanf("%*d%d", &n);
      |  ^~~~~~~~~~~~~~~~~~
ee.c:36:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |   scanf("%d%d", &xx[i], &yy[i]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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