Submission #869796

#	Time	Username	Problem	Language	Result	Execution time	Memory
869796		rainboy	Simple (info1cup19_simple)	C11	30 / 100	128 ms	22008 KiB

subway

#include <stdio.h>
 
#define N	200000
#define N_	(1 << 18)	/* N_ = pow2(ceil(log2(N))) */
#define INF	0x3f3f3f3f3f3f3f3fLL
 
long long min(long long a, long long b) { return a < b ? a : b; }
long long max(long long a, long long b) { return a > b ? a : b; }

long long stmn0[N_ * 2], stmn1[N_ * 2], stmx0[N_ * 2], stmx1[N_ * 2], lz[N_ * 2]; int h_, n_;
 
void put(int i, long long x) {
	long long tmp;

	if (stmn0[i] != INF)
		stmn0[i] += x;
	if (stmx0[i] != -1)
		stmx0[i] += x;
	if (stmn1[i] != INF)
		stmn1[i] += x;
	if (stmx1[i] != -1)
		stmx1[i] += x;
	if (x % 2 != 0) {
		tmp = stmn0[i], stmn0[i] = stmn1[i], stmn1[i] = tmp;
		tmp = stmx0[i], stmx0[i] = stmx1[i], stmx1[i] = tmp;
	}
	lz[i] += x;
}
 
void pul(int i) {
	int l = i << 1, r = l | 1;
	long long tmp;

	stmn0[i] = min(stmn0[l], stmn0[r]), stmx0[i] = max(stmx0[l], stmx0[r]);
	stmn1[i] = min(stmn1[l], stmn1[r]), stmx1[i] = max(stmx1[l], stmx1[r]);
	if (stmn0[i] != INF)
		stmn0[i] += lz[i];
	if (stmx0[i] != -1)
		stmx0[i] += lz[i];
	if (stmn1[i] != INF)
		stmn1[i] += lz[i];
	if (stmx1[i] != -1)
		stmx1[i] += lz[i];
	if (lz[i] % 2 != 0) {
		tmp = stmn0[i], stmn0[i] = stmn1[i], stmn1[i] = tmp;
		tmp = stmx0[i], stmx0[i] = stmx1[i], stmx1[i] = tmp;
	}
}
 
void pull(int i) {
	while (i > 1)
		pul(i >>= 1);
}
 
void build(int *aa, int n) {
	int i, a;
 
	h_ = 0;
	while (1 << h_ < n)
		h_++;
	n_ = 1 << h_;
	for (i = 0; i < n_; i++) {
		a = i < n ? aa[i] : 0;
		if (a % 2 == 0)
			stmn0[n_ + i] = a, stmx0[n_ + i] = a, stmn1[n_ + i] = INF, stmx1[n_ + i] = -1;
		else
			stmn0[n_ + i] = INF, stmx0[n_ + i] = -1, stmn1[n_ + i] = a, stmx1[n_ + i] = a;
	}
	for (i = n_ - 1; i > 0; i--)
		pul(i);
}
 
void update(int l, int r, int x) {
	int l_ = l += n_, r_ = r += n_;
 
	for ( ; l <= r; l >>= 1, r >>= 1) {
		if ((l & 1) == 1)
			put(l++, x);
		if ((r & 1) == 0)
			put(r--, x);
	}
	pull(l_), pull(r_);
}
 
void query(int l, int r, long long *x, long long *y) {
	*x = INF, *y = -1;
	for (l += n_, r += n_; l <= r; l >>= 1, r >>= 1) {
		if ((l & 1) == 1)
			*x = min(*x, stmn0[l]), *y = max(*y, stmx1[l]), l++;
		if ((r & 1) == 0)
			*x = min(*x, stmn0[r]), *y = max(*y, stmx1[r]), r--;
	}
}
 
int main() {
	static int aa[N];
	int n, q, i;
 
	scanf("%d", &n);
	for (i = 0; i < n; i++)
		scanf("%d", &aa[i]);
	build(aa, n);
	scanf("%d", &q);
	while (q--) {
		int t, l, r;
		long long x, y;
 
		scanf("%d%d%d", &t, &l, &r), l--, r--;
		if (t == 0) {
			scanf("%lld", &x);
			update(l, r, x);
		} else {
			query(l, r, &x, &y);
			if (x == INF)
				x = -1;
			printf("%lld %lld\n", x, y);
		}
	}
	return 0;
}

Compilation message (stderr)

subway.c: In function 'main':
subway.c:99:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   99 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
subway.c:101:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  101 |   scanf("%d", &aa[i]);
      |   ^~~~~~~~~~~~~~~~~~~
subway.c:103:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  103 |  scanf("%d", &q);
      |  ^~~~~~~~~~~~~~~
subway.c:108:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  108 |   scanf("%d%d%d", &t, &l, &r), l--, r--;
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~
subway.c:110:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  110 |    scanf("%lld", &x);
      |    ^~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 30
• Subtask 2: 30 / 30
• Subtask 3: 0 / 40