제출 #823872

#제출 시각아이디문제언어결과실행 시간메모리
823872rainboyTriangle Collection (CCO23_day2problem3)C11
10 / 25
54 ms564 KiB
#include <stdio.h> #include <string.h> #define N 2000 int main() { static int aa[N], aa_[N]; int n, q, i, j, d; long long k, ans; scanf("%d%d", &n, &q); for (i = 0; i < n; i++) scanf("%d", &aa[i]); while (q--) { scanf("%d%d", &i, &d), i--; aa[i] += d; memcpy(aa_, aa, n * sizeof *aa); ans = 0; for (i = n - 1, j = n - 1; i >= 0; i--) while (aa_[i] >= 2) { while (j >= 0 && (j > i * 2 || aa_[j] % 2 == 0)) j--; if (j >= 0) ans++, aa_[i] -= 2, aa_[j]--; else { k = 0; while (i >= 0) k += aa_[i], i--; ans += k / 3; break; } } printf("%lld\n", ans); } return 0; }

컴파일 시 표준 에러 (stderr) 메시지

Main.c: In function 'main':
Main.c:11:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |  scanf("%d%d", &n, &q);
      |  ^~~~~~~~~~~~~~~~~~~~~
Main.c:13:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |   scanf("%d", &aa[i]);
      |   ^~~~~~~~~~~~~~~~~~~
Main.c:15:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |   scanf("%d%d", &i, &d), i--;
      |   ^~~~~~~~~~~~~~~~~~~~~
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