Submission #31044

#	Time	Username	Problem	Language	Result	Execution time	Memory
31044		14kg	Wall (IOI14_wall)	C++11	Compilation error	0 ms	0 KiB

wall

#include <stdio.h>
#define N 2000001
#define max2(x,y) (x>y?x:y)
#define min2(x,y) (x<y?x:y)

struct WALL{
	int op, h;
} Tree[N * 4][2], NONO; 
int n, nn, m;

WALL make_WALL(int op, int h)
{
	WALL temp;
	temp.op = op, temp.h = h;
	return temp;
}
void g(int lev, WALL num)
{
	if (num.op == -1) return;
	if (Tree[lev][0].op == -1){ Tree[lev][0] = num; return; }
	if (Tree[lev][1].op == -1){ Tree[lev][1] = num; return; }

	if (Tree[lev][0].op == Tree[lev][1].op)
	{
		if (Tree[lev][0].op == 1) Tree[lev][0].h = max2(Tree[lev][0].h, Tree[lev][1].h);
		else Tree[lev][0].h = min2(Tree[lev][0].h, Tree[lev][1].h);
		Tree[lev][1] = num; return;
	}
	if (Tree[lev][1].op == num.op)
	{
		if (num.op == 1) Tree[lev][1].h = max2(Tree[lev][1].h, num.h);
		else Tree[lev][1].h = min2(Tree[lev][1].h, num.h);
		return;
	}
	
	if (Tree[lev][1].op == 1)
	{
		if (Tree[lev][1].h > Tree[lev][0].h)
		{
			if (num.h < Tree[lev][1].h) Tree[lev][0] = Tree[lev][1], Tree[lev][1] = num;
			return;
		}
		if (num.h < Tree[lev][0].h) Tree[lev][0] = Tree[lev][1], Tree[lev][1] = num;
	}
	else
	{
		if (Tree[lev][0].h>Tree[lev][1].h)
		{
			if (num.h>Tree[lev][1].h) Tree[lev][0] = Tree[lev][1], Tree[lev][1] = num;
			return;
		}
		if (num.h > Tree[lev][0].h) Tree[lev][0] = Tree[lev][1], Tree[lev][1] = num;
	}
}
void Push(int lev, int l, int r, int x, int y, WALL num)
{
	int mid = (l + r) / 2;
	if (r < x || y < l) return;
	if (x <= l && r <= y){ g(lev, num); return; }

	g(lev * 2, Tree[lev][0]), g(lev * 2, Tree[lev][1]);
	g(lev * 2 + 1, Tree[lev][0]), g(lev * 2 + 1, Tree[lev][1]);
	Tree[lev][0] = Tree[lev][1] = NONO;

	Push(lev * 2, l, mid, x, y, num), Push(lev * 2 + 1, mid + 1, r, x, y, num);
}
int get_h(int lev, int h)
{
	if (lev == 0) return h;

	if (Tree[lev][0].op == 1) h = max2(h, Tree[lev][0].h);
	if (Tree[lev][0].op == 2) h = min2(h, Tree[lev][0].h);
	if (Tree[lev][1].op == 1) h = max2(h, Tree[lev][1].h);
	if (Tree[lev][1].op == 2) h = min2(h, Tree[lev][1].h);
	return get_h(lev / 2, h);
}
int main()
{
	WALL temp;
	int x, y;

	scanf("%d %d", &n, &m), NONO = make_WALL(-1, -1);
	for (nn = 1; nn < n; nn *= 2);
	for (int i = 1; i < nn * 2; i++) Tree[i][0] = Tree[i][1] = NONO;

	for (int i = 1; i <= m; i++)
	{
		scanf("%d %d %d %d", &temp.op, &x, &y, &temp.h), x++, y++;
		Push(1, 1, nn, x, y, temp);
	}
	for (int i = 1; i <= n; i++) printf("%d\n", get_h(nn + i - 1, 0));
}

Compilation message (stderr)

wall.cpp: In function 'int main()':
wall.cpp:82:50: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m), NONO = make_WALL(-1, -1);
                                                  ^
wall.cpp:88:60: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d %d %d", &temp.op, &x, &y, &temp.h), x++, y++;
                                                            ^
/tmp/cc3lSYcu.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/cckI1MVD.o:wall.cpp:(.text.startup+0x0): first defined here
/tmp/cc3lSYcu.o: In function `main':
grader.cpp:(.text.startup+0x115): undefined reference to `buildWall(int, int, int*, int*, int*, int*, int*)'
collect2: error: ld returned 1 exit status