Submission #490940

#	Time	Username	Problem	Language	Result	Execution time	Memory
490940		rainboy	Segway (COI19_segway)	C11	100 / 100	785 ms	888 KiB

segway

#include <stdio.h>
#include <string.h>

#define N	20000
#define X	300
#define T	15000
#define INF	0x3f3f3f3f

int min(int a, int b) { return a < b ? a : b; }

int main() {
	static int ss[N][3], xx[N], yy[N], tt[N], kk[X + 1], kk_[T + 1];
	static char accel[X + 1];
	int n, m, h, i, x, t;

	scanf("%d", &n);
	for (i = 0; i < n; i++)
		for (h = 0; h < 3; h++)
			scanf("%d", &ss[i][h]);
	scanf("%d", &m);
	for (h = 0; h < m; h++) {
		scanf("%d", &x);
		accel[x] = 1;
	}
	if (m == 1) {
		for (i = 0; i < n; i++) {
			if (x <= 100)
				tt[i] = ss[i][0] * x;
			else if (x <= 200)
				tt[i] = ss[i][0] * 100 + ss[i][1] * (x - 100);
			else
				tt[i] = ss[i][0] * 100 + ss[i][1] * 100 + ss[i][2] * (x - 200);
			kk_[tt[i]]++;
		}
		for (t = 1; t <= T; t++)
			kk_[t] += kk_[t - 1];
		for (i = 0; i < n; i++) {
			int k = kk_[tt[i] - 1] % 20;

			if (x + k >= 300)
				tt[i] += 300 - x;
			else if (x + k >= 200)
				tt[i] += k + ss[i][2] * (300 - (x + k));
			else if (x + k >= 100)
				tt[i] += k + ss[i][1] * (200 - (x + k)) + ss[i][2] * 100;
			else
				tt[i] += k + ss[i][0] * (100 - (x + k)) + ss[i][1] * 100 + ss[i][2] * 100;
		}
	} else {
		for (i = 0; i < n; i++)
			tt[i] = ss[i][0];
		while (1) {
			t = INF;
			for (i = 0; i < n; i++)
				if (xx[i] != X)
					t = min(t, tt[i]);
			if (t == INF)
				break;
			for (i = 0; i < n; i++)
				if (xx[i] != X && tt[i] == t) {
					xx[i]++;
					if (xx[i] < X && accel[xx[i]] && yy[i] <= xx[i])
						yy[i] = -1;
				}
			memset(kk, 0, (X + 1) * sizeof *kk);
			for (i = 0; i < n; i++)
				if (tt[i] == t)
					kk[xx[i] - 1]++;
				else
					kk[xx[i]]++;
			for (x = X - 1; x >= 0; x--)
				kk[x] += kk[x + 1];
			for (i = 0; i < n; i++)
				if (yy[i] == -1)
					yy[i] = xx[i] + kk[xx[i]] % 20;
			for (i = 0; i < n; i++)
				if (xx[i] != X && tt[i] == t)
					tt[i] = yy[i] <= xx[i] ? t + ss[i][xx[i] / (X / 3)] : t + 1;
		}
	}
	for (i = 0; i < n; i++)
		printf("%d\n", tt[i]);
	return 0;
}

Compilation message (stderr)

segway.c: In function 'main':
segway.c:16:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
segway.c:19:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |    scanf("%d", &ss[i][h]);
      |    ^~~~~~~~~~~~~~~~~~~~~~
segway.c:20:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |  scanf("%d", &m);
      |  ^~~~~~~~~~~~~~~
segway.c:22:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |   scanf("%d", &x);
      |   ^~~~~~~~~~~~~~~

• Subtask 1: 15 / 15
• Subtask 2: 40 / 40
• Subtask 3: 45 / 45