Submission #767199

#	Time	Username	Problem	Language	Result	Execution time	Memory
767199		rainboy	Usmjeravanje (COCI22_usmjeravanje)	C11	0 / 110	0 ms	212 KiB

Main

#include <stdio.h>
 
#define N1	200000
#define N2	200000
#define M	200000
 
int min(int a, int b) { return a < b ? a : b; }
int max(int a, int b) { return a > b ? a : b; }
 
unsigned int X = 12345;
 
int rand_() {
	return (X *= 3) >> 1;
}
 
int uu[M], vv[M];
 
void sort(int *hh, int l, int r) {
	while (l < r) {
		int i = l, j = l, k = r, h = hh[l + rand_() % (r - l)], tmp;
 
		while (j < k) {
			int c = uu[hh[j]] != uu[h] ? uu[h] - uu[hh[j]] : vv[hh[j]] - vv[h];
 
			if (c == 0)
				j++;
			else if (c < 0) {
				tmp = hh[i], hh[i] = hh[j], hh[j] = tmp;
				i++, j++;
			} else {
				k--;
				tmp = hh[j], hh[j] = hh[k], hh[k] = tmp;
			}
		}
		sort(hh, l, i);
		l = k;
	}
}
 
int main() {
	static int hh[M], uul[M], uur[M], vvl[M], vvr[M];
	static char tt[M];
	int n1, n2, m, h, cnt, ans;
 
	scanf("%d%d%d", &n1, &n2, &m);
	for (h = 0; h < m; h++) {
		scanf("%d%d", &uu[h], &vv[h]);
		hh[h] = h;
	}
	sort(hh, 0, m);
	cnt = 0;
	for (h = 0; h < m; h++) {
		int h_ = hh[h];
 
		uul[h_] = uur[h_] = uu[h_], vvl[h_] = vvr[h_] = vv[h_];
		if (cnt && vvl[hh[cnt - 1]] <= vv[h_]) {
			while (cnt && vvl[hh[cnt - 1]] <= vv[h_]) {
				uul[h_] = min(uul[h_], uul[hh[cnt - 1]]), uur[h_] = max(uur[h_], uur[hh[cnt - 1]]);
				vvl[h_] = min(vvl[h_], vvl[hh[cnt - 1]]), vvr[h_] = max(vvr[h_], vvr[hh[cnt - 1]]);
				cnt--;
			}
			tt[h_] = 1, hh[cnt++] = h_;
		} else
			tt[h_] = 0, hh[cnt++] = h_;
	}
	ans = n1 + n2;
	for (h = 0; h < cnt; h++)
		if (tt[hh[h]] == 1)
			ans -= (uur[hh[h]] - uul[hh[h]] + 1) + (vvr[hh[h]] - vvl[hh[h]] + 1) - 1;
	printf("%d\n", ans);
	for (h = 0; h < m; h++)
		printf("%d%c", tt[h], h + 1 < m ? ' ' : '\n');
	return 0;
}

Compilation message (stderr)

Main.c: In function 'main':
Main.c:45:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |  scanf("%d%d%d", &n1, &n2, &m);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.c:47:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |   scanf("%d%d", &uu[h], &vv[h]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 60