一RE一WA

#include <bits/stdc++.h>
using namespace std;
char num[1111];
int a[1111], b, c[1111], l1, l2;
int main() {
	scanf("%s", num + 1);
	l1 = strlen(num + 1);
	for (int i = 1; i <= l1; i++)
		a[l1 - i + 1] = num[i] - '0';
	scanf("%d", &b);
	l2 = l1;
	for (int i = 1; i <= 1110; i++)
		c[i] = 0;
	int r = 0;
	for (int i = l1; i >= 1; i--) {
		r = r * 10 + a[i];
		c[i] = r / b;
		r %= b;
	}
	while (c[l2] == 0 && l2 > 1)
		l2--;
	for (int i = l2; i >= 1; i--)
		printf("%d", c[i]);
	printf("\n");
	return 0;
}