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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 |
---|---|---|---|---|---|---|---|---|---|
#668047 | #8938. Crawling on a Tree | Yansuan_HCl | RE | 1ms | 4352kb | C++20 | 2.7kb | 2024-10-23 10:54:00 | 2024-10-23 10:54:05 |
Judging History
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;
const ll inf = 4e18;
int n, m, c[N], cx[N];
struct info {
int l, r;
array<ll, N> v;
};
void mkv(info &f, info &g, info &h) {
h.v.fill(inf); h.l = min(m + 1, f.l + g.l); h.r = min(m, f.r + g.r);
U (i, f.l, f.r) U (j, g.l, g.r) if (i + j <= m)
h.v[i + j] = min(h.v[i + j], f.v[i] + g.v[j]);
U (i, h.l + 1, h.r - 1) {
assert(h.v[i] - h.v[i - 1] <= h.v[i + 1] - h.v[i]);
}
}
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 {};
x.l = 0, x.r = m;
dp(v, u, w, k, x);
mkv(f, x, y);
f = y;
}
U (y, f.l + 1, m) {
if (y <= f.r)
f.v[y] = min(f.v[y], f.v[y - 1]); // 留在 u
else
f.v[y] = f.v[y - 1];
}
int lb = m + 1, rb = f.l - 1;
U (y, f.l, m) {
int x = max(cx[u], y);
if (2 * x - y > fk) rb = y;
else break;
}
D (y, m, f.l) {
int x = max(cx[u], y);
if (2 * x - y > fk) lb = y;
else break;
}
if (rb < lb) {
assert(rb + 1 < lb);
f.l = rb + 1;
f.r = lb - 1;
} else {
f.l = m + 1, f.r = m;
}
U (y, f.l, f.r) {
int x = max(cx[u], y);
f.v[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 {}; f.l = 0, f.r = m;
dp(1, 0, 0, 2e9, f);
array<ll, N> h; h.fill(inf);
U (y, f.l, f.r) {
int x = max(cx[1], y);
h[x] = min(h[x], f.v[y]);
}
U (x, 1, m) {
h[x] = min(h[x - 1], h[x]);
if (x < cx[1] || h[x] >= inf)
puts("-1");
else
printf("%lld\n", h[x]);
}
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 4352kb
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: -100
Runtime Error
input:
4 2 1 2 3 2 2 3 2 1 2 4 5 1 2 2 2