Submission #486364

#	Time	Username	Problem	Language	Result	Execution time	Memory
486364		rainboy	Ruka (COI15_ruka)	C11	9 / 100	2058 ms	1652 KiB

ruka

#include <stdio.h>

#define N	100000

int main() {
	static int xx[N], yy[N];
	int n, m, i;

	scanf("%d", &n);
	for (i = 0; i < n; i++)
		scanf("%d%d", &xx[i], &yy[i]);
	scanf("%d", &m);
	i = 0;
	while (m--) {
		static char s[2];

		scanf("%s", s);
		if (s[0] == 'B') {
			if (i > 0)
				i--;
		} else if (s[0] == 'F') {
			if (i + 1 < n)
				i++;
		} else if (s[0] == 'C')
			scanf("%d%d", &xx[i], &yy[i]);
		else {
			int j, x, y, cnt;

			x = 1, y = 1, cnt = 0;
			for (j = 0; j < n; j++) {
				if ((x > 0) != (x + xx[j] > 0))
					cnt++;
				if ((y > 0) != (y + yy[j] > 0))
					cnt++;
				x += xx[j], y += yy[j];
			}
			printf("%d\n", cnt);
		}
	}
	return 0;
}

Compilation message (stderr)

ruka.c: In function 'main':
ruka.c:9:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
ruka.c:11:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |   scanf("%d%d", &xx[i], &yy[i]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ruka.c:12:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |  scanf("%d", &m);
      |  ^~~~~~~~~~~~~~~
ruka.c:17:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |   scanf("%s", s);
      |   ^~~~~~~~~~~~~~
ruka.c:25:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |    scanf("%d%d", &xx[i], &yy[i]);
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 0 / 35
• Subtask 3: 0 / 56