oj.uz

답안 #590181

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
590181 2022-07-05T16:05:24 Z rainboy Uplifting Excursion (BOI22_vault) C
5 / 100
 5000 ms 4332 KB 
#include <stdio.h>
#include <string.h>

#define N	100
#define INF	0x3f3f3f3f

long long min(long long a, long long b) { return a < b ? a : b; }
long long max(long long a, long long b) { return a > b ? a : b; }

void update(int *dp, int s_, int a, int k, int c) {
	static int dq[N * N * 2 + 1], qu[N * N * 2 + 1];
	int s, r, head, cnt;

	if (a > 0) {
		for (s = 0; s <= s_; s++)
			dq[s] = dp[s] == -INF ? -INF : dp[s] - s / a * c;
		for (r = 0; r < a; r++) {
			head = cnt = 0;
			for (s = r; s <= s_; s += a) {
				if (dq[s] != -INF) {
					while (cnt && dq[qu[head + cnt - 1]] < dq[s])
						cnt--;
					qu[head + cnt++] = s;
				}
				dp[s] = cnt == 0 ? -INF : dq[qu[head]] + s / a * c;
				if (cnt && qu[head] == s - a * k)
					head++, cnt--;
			}
		}
	} else if (a < 0) {
		a = -a;
		for (s = 0; s <= s_; s++)
			dq[s] = dp[s] == -INF ? -INF : dp[s] + s / a * c;
		for (r = 0; r < a; r++) {
			head = cnt = 0;
			for (s = (s_ - r) / a * a + r; s >= 0; s -= a) {
				if (dq[s] != -INF) {
					while (cnt && dq[qu[head + cnt - 1]] < dq[s])
						cnt--;
					qu[head + cnt++] = s;
				}
				dp[s] = cnt == 0 ? -INF : dq[qu[head]] - s / a * c;
				if (cnt && qu[head] == s + a * k)
					head++, cnt--;
			}
		}
	} else {
		if (c <= 0)
			return;
		for (s = 0; s <= s_; s++)
			if (dp[s] != -INF)
				dp[s] += k * c;
	}
}

long long solve(long long *kk, int n, long long s_) {
	static int dp[N * N * 2 + 1], dq[N + 1][N * N + 1];
	int a, s1, s2;
	long long s, s0, k, k0, ans;

	for (s = 0; s <= n * n; s++)
		dp[s] = -INF;
	dp[0] = 0;
	for (a = n; a >= 0; a--) {
		memcpy(dq[a], dp, (n * n + 1) * sizeof *dp);
		update(dp, n * n, a, min(kk[n + a], n), 1);
	}
	for (s = 0; s <= n * n * 2; s++)
		dp[s] = -INF;
	dp[n * n + 0] = 0;
	s0 = 0, k0 = 0;
	for (a = -n; a < 0; a++) {
		update(dp, n * n * 2, a, min(kk[n + a], n), -1);
		s0 += kk[n + a] * a, k0 += kk[n + a];
	}
	ans = -INF;
	for (a = 0; a <= n; a++) {
		for (s1 = 0; s1 <= n * n * 2; s1++)
			if (dp[s1] != -INF) {
				s2 = s_ + s1 - s0 - n * n;
				if (a == 0) {
					if (s2 >= 0 && s2 <= n * n && dq[a][s2] != -INF) {
						s = s0 - (s1 - n * n) + s2;
						ans = max(ans, k0 + dp[s1] + dq[a][s2] + kk[n + a]);
					}
				} else {
					for (s2 = (s2 % a + a) % a; s2 <= n * n && s0 - s1 + n * n + s2 <= n * n; s2 += a)
						if (dq[a][s2] != -INF) {
							s = s0 - (s1 - n * n) + s2;
							if (s <= s_ && (s_ - s) % a == 0 && (k = (s_ - s) / a) <= kk[n + a])
								ans = max(ans, k0 + dp[s1] + dq[a][s2] + k);
						}
				}
			}
		update(dp, n * n * 2, a, min(kk[n + a], n), -1);
		s0 += kk[n + a] * a, k0 += kk[n + a];
	}
	return ans;
}

int main() {
	static long long kk[N * 2 + 1];
	int n, a, r;
	long long s, ans, tmp;

	scanf("%d%lld", &n, &s);
	for (a = -n; a <= n; a++)
		scanf("%lld", &kk[n + a]);
	ans = -INF;
	for (r = 0; r < 2; r++) {
		ans = max(ans, solve(kk, n, s));
		for (a = 1; a <= n; a++)
			tmp = kk[n - a], kk[n - a] = kk[n + a], kk[n + a] = tmp;
		s = -s;
	}
	if (ans == -INF)
		printf("impossible\n");
	else
		printf("%lld\n", ans);
	return 0;
}

Compilation message

vault.c: In function 'main':
vault.c:106:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  106 |  scanf("%d%lld", &n, &s);
      |  ^~~~~~~~~~~~~~~~~~~~~~~
vault.c:108:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  108 |   scanf("%lld", &kk[n + a]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 580 ms 1032 KB Output is correct
6 Correct 518 ms 1100 KB Output is correct
7 Correct 273 ms 1032 KB Output is correct
8 Correct 476 ms 1100 KB Output is correct
9 Correct 482 ms 1104 KB Output is correct
10 Correct 22 ms 980 KB Output is correct
11 Correct 30 ms 1032 KB Output is correct

Subtask #2
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 580 ms 1032 KB Output is correct
6 Correct 518 ms 1100 KB Output is correct
7 Correct 273 ms 1032 KB Output is correct
8 Correct 476 ms 1100 KB Output is correct
9 Correct 482 ms 1104 KB Output is correct
10 Correct 22 ms 980 KB Output is correct
11 Correct 30 ms 1032 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 592 ms 1036 KB Output is correct
17 Correct 516 ms 1032 KB Output is correct
18 Correct 269 ms 1032 KB Output is correct
19 Correct 474 ms 1036 KB Output is correct
20 Correct 472 ms 1028 KB Output is correct
21 Correct 23 ms 936 KB Output is correct
22 Correct 30 ms 976 KB Output is correct
23 Execution timed out 5075 ms 4332 KB Time limit exceeded
24 Halted 0 ms 0 KB -

Subtask #3-1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Incorrect 6 ms 552 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3-2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Incorrect 6 ms 552 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4-1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Incorrect 6 ms 552 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4-2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 580 ms 1032 KB Output is correct
6 Correct 518 ms 1100 KB Output is correct
7 Correct 273 ms 1032 KB Output is correct
8 Correct 476 ms 1100 KB Output is correct
9 Correct 482 ms 1104 KB Output is correct
10 Correct 22 ms 980 KB Output is correct
11 Correct 30 ms 1032 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Incorrect 6 ms 552 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #5-1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Incorrect 6 ms 552 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5-2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 580 ms 1032 KB Output is correct
6 Correct 518 ms 1100 KB Output is correct
7 Correct 273 ms 1032 KB Output is correct
8 Correct 476 ms 1100 KB Output is correct
9 Correct 482 ms 1104 KB Output is correct
10 Correct 22 ms 980 KB Output is correct
11 Correct 30 ms 1032 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 592 ms 1036 KB Output is correct
17 Correct 516 ms 1032 KB Output is correct
18 Correct 269 ms 1032 KB Output is correct
19 Correct 474 ms 1036 KB Output is correct
20 Correct 472 ms 1028 KB Output is correct
21 Correct 23 ms 936 KB Output is correct
22 Correct 30 ms 976 KB Output is correct
23 Execution timed out 5075 ms 4332 KB Time limit exceeded
24 Halted 0 ms 0 KB -

Subtask #6-1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Incorrect 6 ms 552 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6-2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 580 ms 1032 KB Output is correct
6 Correct 518 ms 1100 KB Output is correct
7 Correct 273 ms 1032 KB Output is correct
8 Correct 476 ms 1100 KB Output is correct
9 Correct 482 ms 1104 KB Output is correct
10 Correct 22 ms 980 KB Output is correct
11 Correct 30 ms 1032 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 592 ms 1036 KB Output is correct
17 Correct 516 ms 1032 KB Output is correct
18 Correct 269 ms 1032 KB Output is correct
19 Correct 474 ms 1036 KB Output is correct
20 Correct 472 ms 1028 KB Output is correct
21 Correct 23 ms 936 KB Output is correct
22 Correct 30 ms 976 KB Output is correct
23 Execution timed out 5075 ms 4332 KB Time limit exceeded
24 Halted 0 ms 0 KB -