oj.uz

Submission #491098

# Submission time Handle Problem Language Result Execution time Memory
491098 2021-11-30T14:22:02 Z rainboy Segway (COI19_segway) C
100 / 100
 193 ms 32852 KB 
#include <stdio.h>
#include <stdlib.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 *ei[T + 1], eo[T + 1];

void append(int t, int i) {
	int o = eo[t]++;

	if (o >= 2 && (o & o - 1) == 0)
		ei[t] = (int *) realloc(ei[t], o * 2 * sizeof *ei[t]);
	ei[t][o] = i;
}

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

	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;
	}
	for (t = 0; t <= T; t++)
		ei[t] = (int *) malloc(2 * sizeof *ei[t]);
	for (i = 0; i < n; i++)
		tt[i] = ss[i][0], append(tt[i], i);
	memset(kk, 0, (X + 1) * sizeof *kk);
	kk[0] += n;
	for (t = 0; t <= T; t++) {
		for (o = eo[t]; o--; ) {
			i = ei[t][o];
			if (xx[i] + 1 < X && accel[xx[i] + 1] && yy[i] <= xx[i] + 1)
				yy[i] = xx[i] + 1 + kk[xx[i] + 1] % 20;
		}
		for (o = eo[t]; o--; ) {
			i = ei[t][o];
			kk[++xx[i]]++;
			if (xx[i] < X)
				append(tt[i] = yy[i] <= xx[i] ? t + ss[i][xx[i] / (X / 3)] : t + 1, i);
		}
	}
	for (i = 0; i < n; i++)
		printf("%d\n", tt[i]);
	return 0;
}

Compilation message

segway.c: In function 'append':
segway.c:17:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   17 |  if (o >= 2 && (o & o - 1) == 0)
      |                     ~~^~~
segway.c: In function 'main':
segway.c:27:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
segway.c:30:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |    scanf("%d", &ss[i][h]);
      |    ^~~~~~~~~~~~~~~~~~~~~~
segway.c:31:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |  scanf("%d", &m);
      |  ^~~~~~~~~~~~~~~
segway.c:33:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |   scanf("%d", &x);
      |   ^~~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 844 KB Output is correct
2 Correct 3 ms 1228 KB Output is correct
3 Correct 9 ms 2252 KB Output is correct
4 Correct 27 ms 5972 KB Output is correct
5 Correct 193 ms 32852 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 844 KB Output is correct
2 Correct 1 ms 796 KB Output is correct
3 Correct 1 ms 844 KB Output is correct
4 Correct 1 ms 844 KB Output is correct
5 Correct 1 ms 844 KB Output is correct
6 Correct 2 ms 972 KB Output is correct
7 Correct 3 ms 972 KB Output is correct
8 Correct 3 ms 1100 KB Output is correct
9 Correct 3 ms 1228 KB Output is correct
10 Correct 5 ms 1356 KB Output is correct
11 Correct 2 ms 1228 KB Output is correct

Subtask #3
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 844 KB Output is correct
2 Correct 3 ms 1228 KB Output is correct
3 Correct 9 ms 2252 KB Output is correct
4 Correct 27 ms 5972 KB Output is correct
5 Correct 193 ms 32852 KB Output is correct
6 Correct 1 ms 844 KB Output is correct
7 Correct 1 ms 796 KB Output is correct
8 Correct 1 ms 844 KB Output is correct
9 Correct 1 ms 844 KB Output is correct
10 Correct 1 ms 844 KB Output is correct
11 Correct 2 ms 972 KB Output is correct
12 Correct 3 ms 972 KB Output is correct
13 Correct 3 ms 1100 KB Output is correct
14 Correct 3 ms 1228 KB Output is correct
15 Correct 5 ms 1356 KB Output is correct
16 Correct 2 ms 1228 KB Output is correct
17 Correct 9 ms 2508 KB Output is correct
18 Correct 15 ms 4280 KB Output is correct
19 Correct 69 ms 14932 KB Output is correct
20 Correct 94 ms 19724 KB Output is correct
21 Correct 114 ms 23604 KB Output is correct
22 Correct 153 ms 28188 KB Output is correct
23 Correct 135 ms 26208 KB Output is correct