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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 |
---|---|---|---|---|---|---|---|---|---|
#447779 | #4401. Prize | zhaohaikun | 0 | 0ms | 0kb | C++20 | 4.0kb | 2024-06-18 19:53:41 | 2024-06-18 19:53:42 |
answer
// MagicDark
#include <bits/stdc++.h>
#define debug cerr << "\033[32m[" << __LINE__ << "]\033[0m "
#define SZ(x) ((int) x.size() - 1)
#define all(x) x.begin(), x.end()
#define ms(x, y) memset(x, y, sizeof x)
#define F(i, x, y) for (int i = (x); i <= (y); i++)
#define DF(i, x, y) for (int i = (x); i >= (y); i--)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
template <typename T> T& chkmax(T& x, T y) {return x = max(x, y);}
template <typename T> T& chkmin(T& x, T y) {return x = min(x, y);}
template <typename T> T& read(T &x) {
x = 0; int f = 1; char c = getchar();
for (; !isdigit(c); c = getchar()) if (c == '-') f = - f;
for (; isdigit(c); c = getchar()) x = (x << 1) + (x << 3) + (c ^ 48);
return x *= f;
}
const int N = 1e6 + 10;
int n, k, q, t;
struct Tree {
int fa[N], rt, dfn[N], nfd[N], dfscnt, sz[N], son[N], dep[N], top[N], dis[N];
vector <int> v[N];
void dfs(int x) {
dep[x] = dep[fa[x]] + 1;
sz[x] = 1;
for (int i: v[x]) {
dfs(i);
sz[x] += sz[i];
if (sz[i] > sz[son[x]]) son[x] = i;
}
if (son[x]) v[x].erase(find(all(v[x]), son[x])), v[x].insert(v[x].begin(), son[x]);
}
void dfs2(int x, int tt) {
top[x] = tt;
nfd[dfn[x] = ++dfscnt] = x;
for (int i: v[x]) dfs2(i, i == v[x].front() ? tt : i);
}
void init() {
F(i, 1, n) {
cin >> fa[i];
if (!~fa[i]) fa[i] = 0, rt = i;
else v[fa[i]].push_back(i);
}
dfs(rt), dfs2(rt, rt);
}
int lca(int x, int y) {
while (top[x] != top[y]) {
if (dep[top[x]] > dep[top[y]]) swap(x, y);
y = fa[top[y]];
}
return dep[x] < dep[y] ? x : y;
}
int query(int x, int y) {
return dis[x] - dis[lca(x, y)] * 2 + dis[y];
}
} T1, T2;
int val[N], an[N];
vector <pair <int, int>> v[N], vv[N];
void dfs(int x, int g) {
T2.dis[x] = g;
// debug << x << " " << T2.dis[x] << endl;
for (auto [i, j]: vv[x]) dfs(i, g + j);
}
signed main() {
ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
cin >> n >> k >> q >> t;
T1.init(), T2.init();
vector <int> g;
F(i, 1, k) g.push_back(T1.nfd[i]);//, debug << T1.nfd[i] << endl;
// debug << T1.rt << endl;
sort(all(g), [&] (int x, int y) {
return T2.dfn[x] < T2.dfn[y];
});
for (int i: g) cout << i << " "; cout << endl;
F(i, 0, SZ(g) - 1) cout << "? " << g[i] << " " << g[i + 1] << '\n';
cout << "!" << endl;
// set <int> s;
stack <int> s;
s.push(g[0]);
F(i, 0, SZ(g) - 1) {
int a, b, c, d; cin >> a >> b >> c >> d;
int k1 = T1.lca(g[i], g[i + 1]);
int k2 = T2.lca(g[i], g[i + 1]);
// debug << k1 << " " << k2 << endl;
v[k1].emplace_back(g[i], a);
v[g[i]].emplace_back(k1, - a);
v[k1].emplace_back(g[i + 1], b);
v[g[i + 1]].emplace_back(k1, - b);
// if (k2 == )
an[g[i + 1]] = k2;
val[g[i + 1]] = d;
int lst = 0;
while (s.size() && T2.dep[s.top()] > T2.dep[k2]) c -= val[lst], lst = s.top(), s.pop();
if (s.empty() || s.top() != k2) {
assert(lst);
if (s.size()) {
an[k2] = s.top();
val[k2] = val[lst] - c;
}
an[lst] = k2;
val[lst] = c;
s.emplace(k2);
}
s.push(g[i + 1]);
// s[g[i + 1]] = d;
// an[g[i + 1]] = k2;
// if (!s[g[i]]) {
// s[g[i]] = d;
// an[g[i]] = d;
// } else {
// if (T2.dep[an[g[i]]] < T2.dep[g[i]]) {
// }
// }
}
queue <int> q;
// int rt = T1.nfd[1];
T1.dis[T1.rt] = 1;
q.push(T1.rt);
while (q.size()) {
int x = q.front(); q.pop();
// debug << x << " " << T1.dis[x] << endl;
for (auto [i, j]: v[x])
if (!T1.dis[i]) {
// debug << i << " " << x << " " << j << endl;
T1.dis[i] = T1.dis[x] + j;
q.push(i);
}
}
// for (int i: g) cout << T1.dis[i] << " "; debug << endl;
while (s.size() > 1) s.pop();
F(i, 1, n)
if (an[i]) vv[an[i]].emplace_back(i, val[i]);
dfs(s.top(), 0);
F(i, 1, t) {
int p, q; cin >> p >> q;
// int k1 = T1.lca(p, q), k2 = T2.lca(p, q);
// cout << T1.query(p, k1) << " " << T1.query(q, k1) << " " << T2.query(p, k2) << " " << T2.query()
cout << T1.query(p, q) << " " << T2.query(p, q) << '\n';
}
cout << endl;
return 0;
}
/* why?
*/
詳細信息
Subtask #1:
score: 0
Time Limit Exceeded
Test #1:
score: 0
Time Limit Exceeded
input:
500000 64682 64681 100000 46115 470589 209303 2979 473162 343535 79503 299539 404621 102085 237721 279170 392890 165201 441593 456314 218991 358478 86614 410800 159785 169761 95368 285837 297549 370283 378974 26449 444381 39320 149913 404523 144109 174828 263837 49847 468694 478535 152644 216598 301...
output:
422989 414496 290928 388223 160563 301045 470257 259625 222733 231286 345214 169817 435263 277447 386014 210139 455433 225855 264772 199736 355788 288506 233893 146148 454958 267562 498596 183745 352665 151125 266374 43142 9414 204593 212097 311775 25324 300764 6643 94847 396968 428563 311355 255767...
result:
Subtask #2:
score: 0
Time Limit Exceeded
Test #13:
score: 0
Time Limit Exceeded
input:
500000 88721 177440 100000 30974 23891 211201 125199 180489 387190 218020 498838 230147 307989 484136 257785 353027 304420 311738 169842 334090 486070 126212 328609 174959 368840 238722 418092 488389 226349 427271 457322 332454 12958 197530 264474 355717 482774 221286 282148 216441 266659 213750 628...
output:
299348 225578 286701 388703 273711 466172 478011 490391 462013 126494 92677 182472 13812 107732 303666 361862 256289 91025 389690 156797 268792 434419 208299 409874 319842 64913 385537 136511 498213 255392 208598 45196 97386 482069 290480 370649 225780 380585 84550 485237 301855 494683 414740 107270...
result:
Subtask #3:
score: 0
Time Limit Exceeded
Test #25:
score: 0
Time Limit Exceeded
input:
500000 200 199 40000 76296 130139 291501 292412 139543 433345 372726 451574 18315 465578 324564 477223 237354 81532 65170 465332 342130 9670 193303 193680 129668 149532 268907 89969 398275 356210 324593 433492 482232 466692 135343 433758 102545 287283 432859 351864 305769 489532 101532 450535 295762...
output:
12225 329473 124294 112780 478338 445039 249189 32330 65783 179054 497476 452979 319006 30813 48206 427935 466790 486377 109196 200837 164218 45188 487722 282259 229713 367076 188057 187010 232559 151913 348461 116954 20242 322713 185020 157495 443679 326708 325415 391214 266949 457474 3735 299220 2...
result:
Subtask #4:
score: 0
Time Limit Exceeded
Test #37:
score: 0
Time Limit Exceeded
input:
1000000 1000 999 100000 678746 439069 32542 85937 936926 284219 461661 203235 533462 940676 230275 621140 780674 254931 562355 229273 201341 493976 358955 963527 880412 91220 474599 160086 698841 591551 718276 844558 39859 765917 34722 401724 219774 443004 682244 545401 968419 968020 354030 411187 1...
output:
927453 737189 653885 840772 346403 780854 103601 49131 439139 486132 820231 177271 826206 982104 499097 409243 194435 293457 172618 662161 236859 473531 81188 533335 712368 462084 777243 239386 911529 829354 62098 492333 390487 523069 358162 163042 451543 653539 717744 885154 584533 11086 661366 952...
result:
Subtask #5:
score: 0
Skipped
Dependency #4:
0%