This documentation is automatically generated by online-judge-tools/verification-helper
#define PROBLEM "https://onlinejudge.u-aizu.ac.jp/courses/lesson/2/ITP1/1/ITP1_1_A"
// #define PROBLEM "https://atcoder.jp/contests/abc351/tasks/abc351_g"
/*
* AtCoder Beginner Contest 351 G - Hash on Tree
* https://atcoder.jp/contests/abc351/submissions/71410674
*/
#include "atcoder/modint"
using mint = atcoder::modint998244353;
#include "../../Src/Algebra/Monoid/AffineMonoid.hpp"
#include "../../Src/Graph/Tree/DynamicTreeDP.hpp"
#include <iostream>
using namespace std;
using namespace zawa;
using AM = AffineMonoid<mint>;
struct Void {};
struct Path {
mint ans, boundA;
Affine<mint> ab;
};
using Point = mint;
struct DP {
using Vertex = mint;
using Edge = Void;
using PathCluster = Path;
using PointCluster = Point;
static PathCluster vertex(const Vertex& v) {
return {v, v, Affine<mint>{1, 0}};
}
static PathCluster addVertex(const PointCluster& p, const Vertex& v) {
return {v, v, Affine<mint>{p, 0}};
}
static PointCluster addEdge(const PathCluster& p, const Edge&) {
return p.ans;
}
static PointCluster rake(const PointCluster& p, const PointCluster& q) {
return p * q;
}
static PathCluster compress(const PathCluster& p, const Edge&, const PathCluster& q) {
return {p.ans + p.ab(q.ans), p.boundA, AM::operation(q.ab, p.ab)};
}
};
//struct Printer {
// void operator()(int i, string type, int par, Path p) const {
// std::cout << i << " -> " << type << ' ' << par << '|' << p.ans.val() << ',' << p.boundA.val() << ',' << p.ab.a().val() << ',' << p.ab.b().val() << endl;
// }
// void operator()(int i, string type, int par, Point p) const {
// std::cout << i << " -> " << type << ' ' << par << '|' << p.val() << endl;
// }
//};
int main() {
#ifdef ATCODER
cin.tie(0);
cout.tie(0);
ios::sync_with_stdio(0);
int N, Q;
cin >> N >> Q;
DynamicTreeDPGraph g(N);
for (int i = 1 ; i < N ; i++) {
int p;
cin >> p;
g[--p].push_back({i, i - 1});
}
vector<DP::Vertex> A(N);
for (int i = 0 ; i < N ; i++) {
int a;
cin >> a;
A[i] = a;
}
DynamicTreeDP<DP> dp(g, 0, A, vector<DP::Edge>(N - 1));
//dp.visit(Printer{});
while (Q--) {
int v, x;
cin >> v >> x;
dp.assignVertex(--v, mint{x});
cout << dp().ans.val() << '\n';
}
#else
cout << "Hello World\n";
#endif
}Traceback (most recent call last):
File "/opt/hostedtoolcache/Python/3.12.13/x64/lib/python3.12/site-packages/onlinejudge_verify/documentation/build.py", line 71, in _render_source_code_stat
bundled_code = language.bundle(stat.path, basedir=basedir, options={'include_paths': [basedir]}).decode()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/hostedtoolcache/Python/3.12.13/x64/lib/python3.12/site-packages/onlinejudge_verify/languages/cplusplus.py", line 187, in bundle
bundler.update(path)
File "/opt/hostedtoolcache/Python/3.12.13/x64/lib/python3.12/site-packages/onlinejudge_verify/languages/cplusplus_bundle.py", line 401, in update
self.update(self._resolve(pathlib.Path(included), included_from=path))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/hostedtoolcache/Python/3.12.13/x64/lib/python3.12/site-packages/onlinejudge_verify/languages/cplusplus_bundle.py", line 260, in _resolve
raise BundleErrorAt(path, -1, "no such header")
onlinejudge_verify.languages.cplusplus_bundle.BundleErrorAt: atcoder/modint: line -1: no such header