제출 #525456

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
525456		rainboy	즐거운 사진 수집 (JOI13_collecting)	C11	100 / 100	1143 ms	61900 KiB

collecting

#include <stdio.h>

#define H_	20
#define N_	(1 << H_)

int h_, n_;

void pul(int *st, int *kk, int i, int h) {
	int l = i << 1, r = l | 1;

	if (st[i] != -1)
		kk[h]--;
	st[i] = st[l] == -1 || st[r] == -1 || st[l] != st[r] ? -1 : st[l];
	if (st[i] != -1)
		kk[h]++;
}

void update(int *st, int *kk, int i) {
	int h;

	i += n_;
	st[i] ^= 1;
	for (h = 1; h <= h_; h++)
		pul(st, kk, i >> h, h);
}

int main() {
	static int st1[N_ * 2], st2[N_ * 2], kk1[H_ + 1], kk2[H_ + 1];
	int q, h;

	scanf("%d%d", &h_, &q), n_ = 1 << h_;
	for (h = 0; h <= h_; h++)
		kk1[h] = kk2[h] = n_ >> h;
	while (q--) {
		int t, h, i, j;
		long long ans;

		scanf("%d", &t);
		if (t == 0) {
			scanf("%d", &i), i--;
			update(st1, kk1, i);
		} else {
			scanf("%d", &j), j--;
			update(st2, kk2, j);
		}
		ans = 0;
		for (h = 0; h <= h_; h++)
			ans += (long long) (n_ >> h) * (n_ >> h) - (long long) kk1[h] * kk2[h];
		ans = ans * 4 + 1;
		printf("%lld\n", ans);
	}
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

collecting.c: In function 'main':
collecting.c:31:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |  scanf("%d%d", &h_, &q), n_ = 1 << h_;
      |  ^~~~~~~~~~~~~~~~~~~~~~
collecting.c:38:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |   scanf("%d", &t);
      |   ^~~~~~~~~~~~~~~
collecting.c:40:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |    scanf("%d", &i), i--;
      |    ^~~~~~~~~~~~~~~
collecting.c:43:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |    scanf("%d", &j), j--;
      |    ^~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 70 / 70