結果
問題 | No.2949 Product on Tree |
ユーザー | akiaa11 |
提出日時 | 2024-10-26 16:17:11 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 265 ms / 2,000 ms |
コード長 | 4,028 bytes |
コンパイル時間 | 5,466 ms |
コンパイル使用メモリ | 272,168 KB |
実行使用メモリ | 41,120 KB |
最終ジャッジ日時 | 2024-10-26 16:17:30 |
合計ジャッジ時間 | 18,401 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,820 KB |
testcase_01 | AC | 1 ms
6,816 KB |
testcase_02 | AC | 2 ms
6,816 KB |
testcase_03 | AC | 206 ms
16,300 KB |
testcase_04 | AC | 186 ms
16,096 KB |
testcase_05 | AC | 199 ms
16,320 KB |
testcase_06 | AC | 205 ms
16,428 KB |
testcase_07 | AC | 198 ms
16,128 KB |
testcase_08 | AC | 200 ms
16,900 KB |
testcase_09 | AC | 204 ms
17,316 KB |
testcase_10 | AC | 209 ms
18,128 KB |
testcase_11 | AC | 217 ms
19,268 KB |
testcase_12 | AC | 231 ms
23,484 KB |
testcase_13 | AC | 228 ms
24,100 KB |
testcase_14 | AC | 236 ms
27,152 KB |
testcase_15 | AC | 258 ms
31,008 KB |
testcase_16 | AC | 251 ms
27,956 KB |
testcase_17 | AC | 246 ms
29,132 KB |
testcase_18 | AC | 249 ms
28,652 KB |
testcase_19 | AC | 249 ms
32,260 KB |
testcase_20 | AC | 239 ms
31,296 KB |
testcase_21 | AC | 238 ms
31,732 KB |
testcase_22 | AC | 245 ms
34,024 KB |
testcase_23 | AC | 220 ms
16,684 KB |
testcase_24 | AC | 195 ms
16,628 KB |
testcase_25 | AC | 206 ms
16,728 KB |
testcase_26 | AC | 206 ms
16,680 KB |
testcase_27 | AC | 218 ms
16,788 KB |
testcase_28 | AC | 209 ms
17,088 KB |
testcase_29 | AC | 203 ms
17,372 KB |
testcase_30 | AC | 208 ms
18,436 KB |
testcase_31 | AC | 223 ms
20,236 KB |
testcase_32 | AC | 235 ms
20,892 KB |
testcase_33 | AC | 225 ms
26,952 KB |
testcase_34 | AC | 241 ms
34,320 KB |
testcase_35 | AC | 255 ms
29,376 KB |
testcase_36 | AC | 259 ms
37,008 KB |
testcase_37 | AC | 265 ms
37,616 KB |
testcase_38 | AC | 257 ms
32,568 KB |
testcase_39 | AC | 261 ms
33,456 KB |
testcase_40 | AC | 247 ms
40,448 KB |
testcase_41 | AC | 243 ms
35,972 KB |
testcase_42 | AC | 262 ms
41,120 KB |
testcase_43 | AC | 62 ms
14,372 KB |
testcase_44 | AC | 64 ms
14,576 KB |
testcase_45 | AC | 80 ms
17,732 KB |
testcase_46 | AC | 73 ms
16,072 KB |
testcase_47 | AC | 54 ms
12,548 KB |
testcase_48 | AC | 75 ms
16,624 KB |
ソースコード
#include <bits/stdc++.h> #include <atcoder/all> #pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #define SELECTER(_1,_2,_3,SELECT,...) SELECT #define rep1(i,n) for(int i=0;i<int(n);++i) #define rep2(i,a,n) for(int i=int(a);i<int(n);++i) #define rep(...) SELECTER(__VA_ARGS__,rep2,rep1)(__VA_ARGS__) #define RSELECTER(_1, _2, _3, RSELECT, ...) RSELECT #define rrep1(i,n) for(int i=(int)(n)-1;i>=0;--i) #define rrep2(i,a,n) for(int i=(int)(n)-1;i>=(int)a;--i) #define rrep(...) RSELECTER(__VA_ARGS__, rrep2, rrep1)(__VA_ARGS__) #define all(a) a.begin(),a.end() #define rall(a) a.rbegin(),a.rend() #define fi first #define se second #define PrintR LogOutput #ifdef _DEBUG #define Log(...) LogOutput(__VA_ARGS__) #else #define Log(...) #endif #define M_PI 3.14159265358979323846 using namespace std; using namespace atcoder; using ll=long long; using ld=long double; using pii=pair<int,int>; using pll=pair<long long,long long>; using pdd=pair<long double,long double>; using tp=tuple<int,int,int>; using tpll=tuple<ll,ll,ll>; using veci=vector<int>; using vecpii=vector<pair<int,int>>; using vecll=vector<long long>; using vecpll=vector<pair<long long,long long>>; using vecpdd=vector<pair<long double,long double>>; using vecs=vector<string>; using vecb=vector<bool>; using vecd=vector<long double>; using vectp=vector<tp>; using vectpll=vector<tpll>; using mint=modint998244353; using mint10=modint1000000007; template<typename T, typename S> istream& operator>>(istream& in, pair<T, S>& a){return in >> a.first >> a.second;} template<typename T, typename S> ostream& operator<<(ostream& out, const pair<T, S>& a){return out << a.first << ' ' << a.second;} ostream& operator<<(ostream& out, const mint& a){return out << a.val();} ostream& operator<<(ostream& out, const mint10& a){return out << a.val();} ostream& operator<<(ostream& out, const modint& a){return out << a.val();} template<typename T> ostream& operator<<(ostream& out, const vector<T>& d){for(int i = 0 ; i < d.size() ; ++i) out << d[i] << (i == d.size() - 1 ? "" : " "); return out;} template<typename T, typename S> pair<T, S> operator+(const pair<T, S>& a, const pair<T, S>& b){return {a.fi + b.fi, a.se + b.se};} template<typename T, typename S> pair<T, S> operator-(const pair<T, S>& a, const pair<T, S>& b){return {a.fi - b.fi, a.se - b.se};} template<class T> inline bool chmax(T& a,T b){if(a<b) {a=b;return true;} return false;} template<class T> inline bool chmin(T& a,T b){if(a>b) {a=b;return true;} return false;} bool Judge(int i, int j, int h, int w){return i < 0 || j < 0 || i >= h || j >= w;} bool PrintA(int i){cout<<(i ? "Yes" : "No")<<endl;return i;} constexpr ll INF=numeric_limits<ll>::max() >> 2; constexpr int inf=numeric_limits<int>::max() >> 1; constexpr ll MOD=998244353; const int vi[] = {0, 1, 0, -1}, vj[] = {1, 0, -1, 0}; template<typename... Args> void LogOutput(Args&&... args){ stringstream ss; ((ss << args << ' '), ...); cout << ss.str().substr(0, ss.str().length() - 1) << endl; } template<typename T> void LogOutput(vector<vector<T>>& data){for(auto d : data) LogOutput(d);} int main(){ ios::sync_with_stdio(false); std::cin.tie(nullptr); int n;cin>>n; vecll a(n); rep(i, n) cin>>a[i]; vector<veci> g(n); rep(i, n - 1){ int u, v;cin>>u>>v; u--, v--; g[u].push_back(v); g[v].push_back(u); } vector<mint> dp(n); auto dfs = [&](auto f, int v, int p) -> void{ dp[v] = a[v]; for(auto nv : g[v]) if(nv != p){ f(f, nv, v); dp[v] += dp[nv] * a[v]; } }; dfs(dfs, 0, -1); mint ans = 0; auto dfs2 = [&](auto f, int v, int p, mint c) -> void{ vector<mint> sum(g[v].size()); rep(i, g[v].size()){ int nv = g[v][i]; if(i) sum[i] = sum[i - 1]; if(nv == p) sum[i] += c * a[v]; else sum[i] += dp[nv] * a[v]; } ans += sum.back(); rep(i, g[v].size()){ int nv = g[v][i]; if(nv != p){ mint res = sum.back() - sum[i]; if(i) res += sum[i - 1]; f(f, nv, v, res + a[v]); } } }; dfs2(dfs2, 0, -1, 0); cout<<ans / 2<<endl; }