제출 #491093

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
491093		rainboy	Tenis (COI19_tenis)	C11	100 / 100	95 ms	10056 KiB

tenis

#include <stdio.h>
#include <string.h>

#define N	100000
#define N_	(1 << 17)	/* N_ = pow2(ceil(log2(N))) */

long long sum[N_ * 2], pref[N_ * 2]; int ii[N_ * 2], n_;

void pul(int i) {
	int l = i << 1, r = l | 1;

	sum[i] = sum[l] + sum[r];
	if (pref[l] <= sum[l] + pref[r])
		pref[i] = pref[l], ii[i] = ii[l];
	else
		pref[i] = sum[l] + pref[r], ii[i] = ii[r];
}

void build(int *aa, int *yy, int *zz, int n) {
	int i;

	n_ = 1;
	while (n_ < n)
		n_ <<= 1;
	for (i = 0; i < n_; i++)
		pref[n_ + i] = sum[n_ + i] = i < n ? yy[aa[i]] + zz[aa[i]] - i * 2 : 0, ii[n_ + i] = i;
	for (i = n_ - 1; i > 0; i--)
		pul(i);
}

void update(int i, int x) {
	i += n_;
	pref[i] = sum[i] = x;
	while (i > 1)
		pul(i >>= 1);
}

int main() {
	static int aa[N], xx[N], yy[N], zz[N];
	int n, q, i, j, a, b;

	scanf("%d%d", &n, &q);
	for (i = 0; i < n; i++) {
		scanf("%d", &aa[i]), aa[i]--;
		xx[aa[i]] = i;
	}
	for (i = 0; i < n; i++) {
		scanf("%d", &a), a--;
		yy[a] = i;
	}
	for (i = 0; i < n; i++) {
		scanf("%d", &a), a--;
		zz[a] = i;
	}
	build(aa, yy, zz, n);
	while (q--) {
		int t;

		scanf("%d", &t);
		if (t == 1) {
			scanf("%d", &a), a--;
			printf(xx[a] <= ii[1] ? "DA\n" : "NE\n");
		} else {
			int tmp;

			scanf("%d%d%d", &t, &a, &b), a--, b--;
			if (t == 1) {
				i = xx[a], j = xx[b];
				xx[a] = j, xx[b] = i;
				update(xx[a], yy[a] + zz[a] - xx[a] * 2), update(xx[b], yy[b] + zz[b] - xx[b] * 2);
			} else if (t == 2) {
				tmp = yy[a], yy[a] = yy[b], yy[b] = tmp;
				update(xx[a], yy[a] + zz[a] - xx[a] * 2), update(xx[b], yy[b] + zz[b] - xx[b] * 2);
			} else {
				tmp = zz[a], zz[a] = zz[b], zz[b] = tmp;
				update(xx[a], yy[a] + zz[a] - xx[a] * 2), update(xx[b], yy[b] + zz[b] - xx[b] * 2);
			}
		}
	}
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

tenis.c: In function 'main':
tenis.c:42:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |  scanf("%d%d", &n, &q);
      |  ^~~~~~~~~~~~~~~~~~~~~
tenis.c:44:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |   scanf("%d", &aa[i]), aa[i]--;
      |   ^~~~~~~~~~~~~~~~~~~
tenis.c:48:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |   scanf("%d", &a), a--;
      |   ^~~~~~~~~~~~~~~
tenis.c:52:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |   scanf("%d", &a), a--;
      |   ^~~~~~~~~~~~~~~
tenis.c:59:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |   scanf("%d", &t);
      |   ^~~~~~~~~~~~~~~
tenis.c:61:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   61 |    scanf("%d", &a), a--;
      |    ^~~~~~~~~~~~~~~
tenis.c:66:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   66 |    scanf("%d%d%d", &t, &a, &b), a--, b--;
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 12 / 12
• Subtask 4: 21 / 21
• Subtask 5: 49 / 49