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 |
---|---|---|---|---|---|---|---|---|---|
#667989 | #8938. Crawling on a Tree | Yansuan_HCl | RE | 2ms | 8928kb | C++20 | 3.0kb | 2024-10-23 10:27:54 | 2024-10-23 10:27:54 |
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;
int n, m, c[N], cx[N];
using info = array<ll, N>;
void mkv(info &f, info &g, info &h) {
h.fill(1e18);
int i = 0, j = 0, k = 0;
while (i <= m && f[i] == 1e18) ++i;
while (j <= m && g[j] == 1e18) ++j;
if (i > m || j > m)
return;
h[i + j] = f[i] + g[j];
k = i + j + 1;
++i; ++j;
for (; i <= m && j <= m && f[i] < 1e18 && g[j] < 1e18 && k <= m; ++k) {
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;
}
}
for (; i <= m && f[i] < 1e18 && k <= m; ++i, ++k) {
h[k] = h[k - 1] + f[i] - f[i - 1];
}
for (; j <= m && f[j] < 1e18 && k <= m; ++j, ++k) {
h[k] = h[k - 1] + g[j] - g[j - 1];
}
U (i, 0, m) U (j, 0, m - i) {
assert(f[i] + g[j] >= h[i + 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
int lb = m + 1, rb = -1;
U (y, 0, m) {
int x = max(cx[u], y);
if (2 * x - y > fk) rb = y;
else break;
}
D (y, m, 0) {
int x = max(cx[u], y);
if (2 * x - y > fk) lb = y;
else break;
}
D (i, rb, 0) f[i] = 1e18;
U (i, lb, m) f[i] = 1e18;
// U (i, 1, m - 1) {
// if (f[i] - f[i - 1] > f[i + 1] - f[i])
// exit(0);
// }
U (y, 0, m) {
int x = max(cx[u], y);
f[y] += (2 * x - y) * fw;
f[y] = min(f[y], ll(1e18));
}
}
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]);
}
}
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 4456kb
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: 4244kb
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: 4216kb
input:
2 1 2 1 1 1 1
output:
1
result:
ok 1 number(s): "1"
Test #4:
score: 0
Accepted
time: 1ms
memory: 4048kb
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: 4420kb
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: 1ms
memory: 4276kb
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: 7544kb
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: 0
Accepted
time: 0ms
memory: 8740kb
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:
-1 -1 -1 -1 -1
result:
ok 5 number(s): "-1 -1 -1 -1 -1"
Test #9:
score: 0
Accepted
time: 0ms
memory: 8928kb
input:
50 10 1 2 44914 14 2 3 84737 11 3 4 76461 7 4 5 36207 14 5 6 48479 10 6 7 88167 14 7 8 71415 7 8 9 95290 10 9 10 12553 7 10 11 2718 7 11 12 89004 12 12 13 86605 10 13 14 76252 14 14 15 75076 10 15 16 52024 14 16 17 23365 15 17 18 93829 13 18 19 3765 10 19 20 72010 9 20 21 17119 7 21 22 83633 14 22 2...
output:
-1 -1 9947212 9947212 9947212 9947212 9947212 9947212 9947212 9947212
result:
ok 10 numbers
Test #10:
score: -100
Runtime Error
input:
50 20 1 2 84157 10 2 3 20072 5 3 4 36547 8 4 5 46072 11 5 6 64560 10 6 7 51220 8 7 8 6257 14 8 9 85793 7 9 10 67400 7 10 11 37948 14 11 12 64361 12 12 13 15316 14 13 14 86110 9 14 15 66507 13 15 16 31139 9 16 17 91577 12 17 18 30027 7 18 19 17865 9 19 20 16377 14 20 21 70649 14 21 22 29703 5 22 23 7...