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 |
---|---|---|---|---|---|---|---|---|---|
#376773 | #8133. When Anton Saw This Task He Reacted With 😩 | pandapythoner | WA | 281ms | 21284kb | C++17 | 7.0kb | 2024-04-04 16:30:02 | 2024-04-04 16:30:02 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define flt double
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
const ll inf = 1e18;
mt19937 rnd(234);
const ll mod = 998244353;
template<int x, int y>
using mat = array<array<int, y>, x>;
template<int x, int y, int z>
mat<x, z> mul(const mat<x, y>& a, const mat <y, z>& b) {
mat<x, z> c;
for (int i = 0; i < x; i += 1) {
for (int k = 0; k < z; k += 1) {
c[i][k] = 0;
for (int j = 0; j < y; j += 1) {
c[i][k] = (c[i][k] + ((ll)a[i][j]) * b[j][k]) % mod;
}
}
}
return c;
}
mat<3, 3> flex() {
return { array<int, 3>{1, 0, 0},
array<int, 3>{0, 1, 0},
array<int, 3>{0, 0, 1} };
}
inline int neg(int a) {
if (a == 0) {
return 0;
}
return mod - a;
}
mat<3, 3> get_matrix(const mat<1, 3>& a, bool chipi_chipi_chapa_chapa = false) {
int x = a[0][0], y = a[0][1], z = a[0][2];
if (!chipi_chipi_chapa_chapa) {
return { array<int, 3>{0, neg(z), y},
array<int, 3>{z, 0, neg(x)},
array<int, 3>{neg(y), x, 0} };
}
return { array<int, 3>{0, z, neg(y)},
array<int, 3>{neg(z), 0, x},
array<int, 3>{y, neg(x), 0} };
}
mat<1, 3> prod(const mat<1, 3>& a, const mat<1, 3>& b) {
return mul<1, 3, 3>(a, get_matrix(b));
}
struct SGT {
struct node {
mat<3, 3> x;
mat<3, 3> sum;
int l = -1;
int r = -1;
int sz = 0;
node() {}
node(const mat<3, 3>& _x) {
x = _x;
sum = x;
sz = 1;
}
};
int n;
vector<node> t;
int rt;
void upd(int v) {
int l = t[v].l;
int r = t[v].r;
t[v].sum = flex();
t[v].sz = 1;
if (r != -1) {
t[v].sz += t[r].sz;
t[v].sum = mul<3, 3, 3>(t[v].sum, t[r].x);
}
t[v].sum = mul<3, 3, 3>(t[v].sum, t[v].x);
if (l != -1) {
t[v].sz += t[l].sz;
t[v].sum = mul<3, 3, 3>(t[v].sum, t[l].x);
}
}
int build(int tl, int tr, const vector<mat<1, 3>>& a) {
if (tl > tr) {
return -1;
}
int tm = (tl + tr) / 2;
int v = (int)t.size();
t.push_back(node(get_matrix(a[tm])));
t[v].l = build(tl, tm - 1, a);
t[v].r = build(tm + 1, tr, a);
upd(v);
return v;
}
void build(const vector<mat<1, 3>>& a) {
n = (int)a.size();
t.clear();
rt = build(0, n - 1, a);
}
void chng(int v, int i, const mat<1, 3>& x) {
int l = t[v].l;
int lsz = (l == -1) ? 0 : t[l].sz;
if (i < lsz) {
chng(l, i, x);
upd(v);
return;
}
if (i == lsz) {
t[v].x = get_matrix(x);
upd(v);
return;
}
int r = t[v].r;
chng(r, i - lsz - 1, x);
upd(v);
}
void chng(int i, const mat<1, 3>& x) {
chng(rt, i, x);
}
mat<3, 3> get() {
if (rt == -1) {
return flex();
}
return t[rt].sum;
}
};
struct query {
int v;
int x, y, z;
};
int n, q;
vector<vector<int>> g;
vector<mat<1, 3>> val;
int c;
vector<query> biba;
vector<int> sz;
bool do_neg;
vector<int> clr;
void build_dfs(int v) {
sz[v] = 1;
for (auto to : g[v]) {
build_dfs(to);
sz[v] += sz[to];
}
if ((int)g[v].size() == 0) {
return;
}
assert((int)g[v].size() == 2);
int& l = g[v][0];
int& r = g[v][1];
if (sz[l] < sz[r]) {
swap(l, r);
do_neg = !do_neg;
}
}
void clr_dfs(int v, int c, int bnd) {
clr[v] = c;
for (auto to : g[v]) {
if (to == bnd) {
continue;
}
clr_dfs(to, c, bnd);
}
}
vector<mat<1, 3>> hld_dfs(int v, const vector<query>& a) {
int m = (int)a.size();
int u = v;
vector<int> way;
while ((int)g[u].size() != 0) {
way.push_back(u);
u = g[u][0];
}
way.push_back(u);
int k = (int)way.size();
for (int i = 0; i < k - 1; i += 1) {
clr_dfs(way[i], i, way[i + 1]);
}
clr[u] = k - 1;
vector<vector<query>> qrs(k);
for (auto& f : a) {
int i = clr[f.v];
qrs[i].push_back(f);
}
vector<vector<mat<1, 3>>> vals(k);
for (int i = 0; i < k; i += 1) {
if (i < k - 1) {
vals[i] = hld_dfs(g[way[i]][1], qrs[i]);
} else {
vals[i].resize((int)qrs[i].size() + 1);
vals[i][0] = val[way[i]];
for (int j = 0; j < (int)qrs[i].size(); j += 1) {
vals[i][j + 1] = { array<int, 3>{qrs[i][j].x, qrs[i][j].y, qrs[i][j].z} };
}
}
}
vector<mat<1, 3>> sgt_init(k - 1);
SGT sgt;
for (int i = 0; i < k - 1; i += 1) {
sgt_init[i] = vals[i][0];
}
sgt.build(sgt_init);
for (int i = 0; i < k - 1; i += 1) {
clr_dfs(way[i], i, way[i + 1]);
}
clr[u] = k - 1;
vector<int> pntr(k);
vector<mat<1, 3>> rs(m + 1);
for (int i = 0; i <= m; i += 1) {
rs[i] = mul<1, 3, 3>(vals[k - 1][pntr[k - 1]], sgt.get());
/*
auto v = vals[k - 1][pntr[k - 1]];
for (int j = k - 2; j >= 0; j -= 1) {
v = mul<1, 3, 3>(v, get_matrix(vals[j][pntr[j]]));
}
rs[i] = v;
*/
if (i < m) {
int v = a[i].v;
int pos = clr[v];
pntr[pos] += 1;
if (pos < k - 1) {
sgt.chng(pos, vals[pos][pntr[pos]]);
}
}
}
return rs;
}
int32_t main() {
if (1) {
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
}
cin >> n >> q;
g.assign(n, vector<int>());
val.resize(n);
for (int i = 0; i < n; i += 1) {
char c;
cin >> c;
if (c == 'x') {
int l, r;
cin >> l >> r;
--l;
--r;
g[i] = { l, r };
} else {
int x, y, z;
cin >> x >> y >> z;
val[i] = { array<int, 3>{x, y, z} };
}
}
c = 0;
biba.resize(q);
for (auto& [v, x, y, z] : biba) {
cin >> v >> x >> y >> z;
--v;
}
do_neg = false;
sz.resize(n);
build_dfs(0);
clr.resize(n);
auto rs = hld_dfs(0, biba);
assert((int)rs.size() == q + 1);
for (int i = 1; i <= q; i += 1) {
int x = rs[i][0][0], y = rs[i][0][1], z = rs[i][0][2];
if (do_neg) {
x = neg(x);
y = neg(y);
z = neg(z);
}
cout << x << " " << y << " " << z << "\n";
}
return 0;
}
/*
5 3
x 2 3
v 1 0 1
x 4 5
v 0 2 1
v 1 1 1
4 1 2 3
5 0 1 1
4 0 2 2
*/
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 3660kb
input:
5 3 x 2 3 v 1 0 1 x 4 5 v 0 2 1 v 1 1 1 4 1 2 3 5 0 1 1 4 0 2 2
output:
998244351 0 2 1 998244351 998244352 0 0 0
result:
ok 9 numbers
Test #2:
score: -100
Wrong Answer
time: 281ms
memory: 21284kb
input:
199999 100000 x 137025 65661 v 572518668 158967010 74946561 x 129836 192657 x 141948 187810 v 574918069 328924434 141474729 x 143312 111002 x 52772 148497 v 922857701 690080961 651915759 v 656198340 28002884 129579416 v 639893144 265359784 646791226 v 796871409 411409966 598676495 v 882562617 224394...
output:
158234252 631027157 407008394 158234252 631027157 407008394 158234252 631027157 407008394 158234252 631027157 407008394 158234252 631027157 407008394 158234252 631027157 407008394 158234252 631027157 407008394 158234252 631027157 407008394 158234252 631027157 407008394 158234252 631027157 407008394 ...
result:
wrong answer 1st numbers differ by non-multiple of MOD, - expected: '393120558', found: '158234252'