oj.uz

답안 #730940

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
730940 2023-04-26T16:19:41 Z rainboy 등산 경로 (IZhO12_route) C
100 / 100
 155 ms 21648 KB 
#include <stdio.h>

#define N	1000000

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

int main() {
	static int aa[N], ii[N], dd[N];
	static long long cc[N + 1];
	int n, k, cnt, i, i_, d, ans;

	scanf("%d%d", &n, &k);
	for (i = 0; i < n; i++)
		scanf("%d", &aa[i]);
	i_ = -1;
	for (i = 0; i < n; i++)
		if (i_ == -1 || aa[i_] < aa[i])
			i_ = i;
	cnt = 0;
	for (i = 0; i < n; i++) {
		d = aa[(i_ + i) % n] - aa[(i_ + i + 1) % n];
		if (d > 0)
			ii[cnt] = i, dd[cnt] = d, cnt++;
		else {
			d = -d;
			while (cnt)
				if (d >= dd[cnt - 1])
					cc[i - ii[cnt - 1]] += dd[cnt - 1], d -= dd[cnt - 1], cnt--;
				else {
					cc[i - ii[cnt - 1]] += d, dd[cnt - 1] -= d;
					break;
				}
		}
	}
	ans = 0;
	for (d = 1; d < n; d++)
		if (k / d >= cc[d])
			k -= cc[d] * d, ans += cc[d];
		else {
			ans += k / d;
			break;
		}
	ans *= 2;
	printf("%d\n", ans);
	return 0;
}

Compilation message

route.c: In function 'main':
route.c:12:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |  scanf("%d%d", &n, &k);
      |  ^~~~~~~~~~~~~~~~~~~~~
route.c:14:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |   scanf("%d", &aa[i]);
      |   ^~~~~~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 296 KB Output is correct
5 Correct 0 ms 292 KB Output is correct
6 Correct 0 ms 292 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 15 ms 2248 KB Output is correct
11 Correct 15 ms 1704 KB Output is correct
12 Correct 19 ms 2232 KB Output is correct
13 Correct 152 ms 21596 KB Output is correct
14 Correct 150 ms 21648 KB Output is correct
15 Correct 137 ms 19748 KB Output is correct
16 Correct 146 ms 20504 KB Output is correct
17 Correct 155 ms 20512 KB Output is correct
18 Correct 138 ms 21440 KB Output is correct
19 Correct 152 ms 21512 KB Output is correct
20 Correct 120 ms 14000 KB Output is correct