Submission #483428

#	Time	Username	Problem	Language	Result	Execution time	Memory
483428		rainboy	Vepar (COCI21_vepar)	C11	70 / 70	150 ms	12744 KiB

Main

#include <stdio.h>

#define A	10000000

int pp[A], n;

void init() {
	static char composite[A + 1];
	int a, b;

	for (a = 2; a <= A; a++) {
		if (composite[a])
			continue;
		pp[n++] = a;
		for (b = a + a; b <= A; b += a)
			composite[b] = 1;
	}
}

int count(int a, int p) {
	return a < p ? 0 : count(a / p, p) + a / p;
}

int main() {
	int t;

	init();
	scanf("%d", &t);
	while (t--) {
		int a, b, c, d, i, da;

		scanf("%d%d%d%d", &a, &b, &c, &d);
		da = 1;
		for (i = 0; i < n; i++)
			if (count(b, pp[i]) - count(a - 1, pp[i]) > count(d, pp[i]) - count(c - 1, pp[i])) {
				da = 0;
				break;
			}
		printf(da ? "DA\n" : "NE\n");
	}
	return 0;
}

Compilation message (stderr)

Main.c: In function 'main':
Main.c:28:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |  scanf("%d", &t);
      |  ^~~~~~~~~~~~~~~
Main.c:32:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |   scanf("%d%d%d%d", &a, &b, &c, &d);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10