QOJ.ac

QOJ

ID题目提交者结果用时内存语言文件大小提交时间测评时间
#667943#8938. Crawling on a TreeYansuan_HClRE 2ms7592kbC++202.4kb2024-10-23 09:58:412024-10-23 09:58:56

Judging History

你现在查看的是最新测评结果

  • [2024-10-23 09:58:56]
  • 评测
  • 测评结果:RE
  • 用时:2ms
  • 内存:7592kb
  • [2024-10-23 09:58:41]
  • 提交

answer

#include <bits/stdc++.h>
#define ms(x, v) memset(x, v, sizeof(x))
#define il __attribute__((always_inline)) static
#define U(i,l,r) for(int i(l),END##i(r);i<=END##i;++i)
#define D(i,r,l) for(int i(r),END##i(l);i>=END##i;--i)
using namespace std;
using ll = long long;

#define IC isdigit(c)
#define GC c=getchar()
void rd(auto &x) { x = 0; char GC; bool f = 0;
	for (; !IC; GC) f |= c == '-';
	for (; IC; GC) x = x * 10 + c - 48;
	if (f) x = -x;
}
void rd(auto &x, auto &...y) { rd(x); rd(y...); }
#define meow(...) fprintf(stderr, __VA_ARGS__)
#define Assert(e, v) if (!(e)) { meow("AF@%d\n", __LINE__ ); exit(v); }

#define vc vector
#define eb emplace_back
#define pb push_back

const int N = 10004;
int n, m, c[N], cx[N];

using info = array<ll, N>;
void mkv(info &f, info &g, info &h) {
	U (i, 1, m - 1) {
		assert(f[i] - f[i - 1] <= f[i + 1] - f[i]);
		assert(g[i] - g[i - 1] <= g[i + 1] - g[i]);
	}
	h[0] = f[0] + g[0];
	int i = 1, j = 1, k = 1;
	for (; k <= m; ++k) {
		assert(i <= m);
		assert(j <= m);
		if (f[i] - f[i - 1] <= g[j] - g[j - 1]) {
			h[k] = h[k - 1] + f[i] - f[i - 1];
			++i;
		} else {
			h[k] = h[k - 1] + g[j] - g[j - 1];
			++j;
		}
	}
}

using edge = array<int, 3>;
vc<edge> g[N];
int siz[N], hson[N];
void dfs0(int u, int f) {
	siz[u] = 1; cx[u] = c[u];
	for (auto [v, w, k] : g[u]) if (v != f) {
		dfs0(v, u);
		siz[u] += siz[v];
		cx[u] = max(cx[u], cx[v]);
		if (siz[v] > siz[hson[u]])
			hson[u] = v;
	}
}
void dp(int u, int fa, int fw, int fk, info &f) {
	for (auto [v, w, k] : g[u]) if (v == hson[u]) {
		dp(hson[u], u, w, k, f);
	}
	for (auto [v, w, k] : g[u]) if (v != fa && v != hson[u]) {
		info x {}, y {};
		dp(v, u, w, k, x);
		mkv(f, x, y);
		f = y;
	}
	U (y, 1, m) f[y] = min(f[y], f[y - 1]); // 留在 u
	U (y, 0, m) {
		int x = max(cx[u], y);
		if (2 * x - y > fk)
			f[y] = (1e4 - y + 1) * 1e14;
	}
	U (y, 0, m) {
		int x = max(cx[u], y);
		f[y] += (2 * x - y) * fw;
	}
}

int main() {
//	freopen("ava.in", "r", stdin);
	
	rd(n, m);
	U (i, 2, n) {
		int u, v, w, k; rd(u, v, w, k);
		g[u].pb({v, w, k});
		g[v].pb({u, w, k});
	}
	U (i, 2, n)
		rd(c[i]);
	
	dfs0(1, 0);
	info f {};
	dp(1, 0, 0, 2e9, f);
	info h; h.fill(1e18);
	
	U (y, 0, m) {
		int x = max(cx[1], y);
		h[x] = min(h[x], f[y]);
	}
	U (x, 1, m) {
		h[x] = min(h[x - 1], h[x]);
		if (x < cx[1] || h[x] >= 1e14)
			puts("-1");
		else
			printf("%lld\n", h[x]);
	}
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 4408kb

input:

4 2
1 2 3 2
2 3 2 1
2 4 5 1
1 1 1

output:

-1
13

result:

ok 2 number(s): "-1 13"

Test #2:

score: 0
Accepted
time: 1ms
memory: 4272kb

input:

4 2
1 2 3 2
2 3 2 1
2 4 5 1
2 2 2

output:

-1
-1

result:

ok 2 number(s): "-1 -1"

Test #3:

score: 0
Accepted
time: 1ms
memory: 4300kb

input:

2 1
2 1 1 1
1

output:

1

result:

ok 1 number(s): "1"

Test #4:

score: 0
Accepted
time: 1ms
memory: 4108kb

input:

2 50
2 1 1 1
50

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1

result:

ok 50 numbers

Test #5:

score: 0
Accepted
time: 1ms
memory: 4304kb

input:

2 50
2 1 1 50
50

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
50

result:

ok 50 numbers

Test #6:

score: 0
Accepted
time: 0ms
memory: 4252kb

input:

2 50
1 2 1 100000
50

output:

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
50

result:

ok 50 numbers

Test #7:

score: 0
Accepted
time: 2ms
memory: 7592kb

input:

50 1
1 2 85524 58896
2 3 9137 9819
3 4 3036 88987
4 5 78909 15766
5 6 76067 34996
6 7 64247 63701
7 8 14 9384
8 9 37698 35418
9 10 51427 91691
10 11 39818 89351
11 12 47887 64083
12 13 43836 44135
13 14 22561 83803
14 15 52617 97413
15 16 41869 83810
16 17 35783 18642
17 18 5514 34601
18 19 50448 49...

output:

3202064

result:

ok 1 number(s): "3202064"

Test #8:

score: -100
Runtime Error

input:

50 5
1 2 48897 1
2 3 59967 3
3 4 61806 2
4 5 48519 4
5 6 77213 5
6 7 32384 1
7 8 59009 2
8 9 98263 1
9 10 42945 6
10 11 5549 6
11 12 51097 6
12 13 88536 4
13 14 44215 2
14 15 56896 2
15 16 19263 5
16 17 30787 5
17 18 20135 3
18 19 75922 4
19 20 35387 5
20 21 84081 4
21 22 54235 5
22 23 44411 3
23 24...

output:


result: